Component Of Surface Free Energy Research Articles

Transition in the Acid–Base Component of Surface Free Energy of Ice upon the Premelting of Its Second Molecular Bilayer

Molecular disordering of the ice surface occurs below the bulk melting temperature of 273 K, termed surface premelting. The top-most molecular layer begins gradually premelting at 200 K, and has been linked to its low coefficient of friction through an increase in molecular mobility. The second molecular bilayer premelts around 257 K, but no study has linked this transition to a change in any macroscopic phenomena. Here, we show that the thermodynamic work of adhesion between polydimethylsiloxane (PDMS) and ice changes abruptly at 257.0 $\pm$ 0.1 K. Surface-sensitive sum frequency generation spectroscopy shows that there are no molecular level changes at the PDMS surface or the ice-PDMS interface near the transition in adhesion, indicating that the transition arises from changes of the ice surface. Using existing contact angle data in the literature, we show that this transition is due to a decrease in the acid-base component of the surface free energy of ice by 17 $\pm$ 2 mJ/m$^2$ at 257.0 $\pm$ 0.1 K. The change in surface energy provides a possible explanation for a variety of unexplained phenomena seen across the literature including ice adhesion, friction, and the morphology of snowflakes.

Hygroscopic property of biofuel obtained by torrefaction of wood in a quiescent layer of bentonite

Torrefaction is widely employed to improve the characteristics of wood for using it as a fuel. One of the possible ways of torrefaction is heating of biomass in a quiescent layer of mineral filler. In this paper the effect of the parameters of the torrefaction process in a quiescent bentonite layer on the hydrophobization of wood (pine, oak, poplar, and rowan tree) is experimentally studied. The hydrophobic properties of biofuels are evaluated by measuring the contact angle. However, the value of this parameter for biofuel depends not only on the hydrophobicity of the surface but also on its porosity. Therefore, the value of the contact angle for a smooth surface was estimated by using the method proposed by Liptakova and Kudela. It is found that torrefied pine has the largest hydrophobicity in comparison with oak, poplar, and rowan tree. The hydrophobicity of biofuel increases with the torrefaction temperature and holding time and decreases with the height of the bentonite layer in the reactor. The contact angle depends on the mass yield as [contactangle]o=316-549∙massyield+289∙massyield2. The hydrophobicity of biofuels increases as the content of oxidized compounds becomes higher. The surface free energy is estimated by using the Owens-Wendt method. It is demonstrated that the dispersive component of surface free energy rises, while a polar component decreases in the process of torrefaction. The critical surface energy is estimated via Zisman method. It is established that after torrefaction its value increases with the decrease in the height of mineral layer.

Predictive model of modified asphalt mixtures with nano hydrated lime to increase resistance to moisture and fatigue damages by the use of deicing agents

Deicing agents are used to dissolving the frost on road surfaces in winter and cold areas. Researchers have evaluated the impact of different deicing agents on the moisture susceptibility performance of asphalt mixtures, but they have not investigated the effect of these agents on fatigue failure and thermodynamic parameters of asphalt mixtures. Therefore, in this research, by investigating the effect of two new deicing agents of calcium magnesium acetate (CMA) and potassium acetate (PA) as well as sodium chloride (NaCl) traditional agent on moisture and fatigue performances of asphalt mixtures, predictive model of the tensile strength ratio (TSR) and the fatigue life ratio (NFR) using genetic programming (GP) based on the surface free energy (SFE) components and other properties of asphalt mixtures were presented. Nano hydrated lime (NHL) was applied as an asphalt binder modifier and an anti-stripping agent to improve the strength of asphalt mixtures. The results indicated that the saturated mixtures in CMA had the highest indirect tensile strength (ITS) and fatigue life in lower freeze-thaw cycles, while the NaCl-saturated samples had more ITS and fatigue life in higher cycles. The CMA-saturated samples had the greatest TSR and NFR. Using NHL in all saturated samples resulted in increasing TSR and NFR values. Results of SFE method showed that using NHL increased the polar, non-polar and basic components of asphalt binders and decreased their acidic components. Also, using NHL increased the total SFE amount of asphalt binder, enhancing the adhesion of aggregate and asphalt binder and cohesion in asphalt binder membrane, and as a result, improving the moisture resistance in asphalt mixtures. Using 1.5% NHL had the greatest effect on improving adhesion free energy (AFE), cohesion free energy (CFE) and detachment energy (DE). Among deicing solutions, CMA had the highest CFE, in general, and NaCl had the best DE values. PA-saturated samples had the greatest permeability of asphalt mixture (PAM) values. GP model had a high R2 96.4% and 98.3% for TSR and NFR, respectively. Using GP model to achieve the maximum TSR and NFR, the Pareto curve showed that 1.32% NHL was the optimum value for simultaneously increasing moisture resistance and fatigue life.

The influence of cohesion and adhesion parameters on the moisture sensitivity of modified Asphalt mixtures with polymer additive

ABSTRACT Moisture sensitivity is one of the common distresses in flexible pavements due to the deteriorating effect of water on adhesion of bitumen-aggregate and cohesion of mastic. In the present study, the effect of the styrene–ethylene–butylene–styrene as bitumen modifier was examined on the moisture damage potential of control and modified asphalt mixtures using thermodynamic and mechanical methods. The results of this study indicated that the modified asphalt mixtures have significantly better resistance than the control samples. In addition, the results of the thermodynamic parameters showed that changes in the surface-free energy components of the modified bitumen have improved the adhesion of these bitumens to high silica aggregates that are susceptible to moisture. Moreover, the use of styrene–ethylene–butylene–styrene increases the surface-free energy of mastic film, which also increases the resistance to cohesion failure. Furthermore, the results of the amount of energy released during the stripping event show that the use of bitumen modifying polymer additive has reduced the amount of de-bonding energy. This indicates that the tendency for bitumen to detach from the aggregate surface in the presence of water has decreased from the thermodynamics view.

Surface free energy analysis of ITO/Au/ITO multilayer thin films on polycarbonate substrate by apparent contact angle measurements

A detailed surface free energy (SFE) knowledge of transparent conducting oxide (TCO)/metal/TCO electrodes is necessary for their applications related to surface wettability. However, SFE analysis of these surfaces has not been performed systematically previously. In this study, ITO and ITO/Au/ITO multilayer thin films were coated onto O2 plasma treated polycarbonate (PC) substrates by magnetron sputtering. The wettability characteristics of untreated PC, O2 plasma treated PC, ITO, Au interlayer, and ITO/Au/ITO multilayer thin films were evaluated by apparent contact angle measurements of nine different test liquids having various surface tensions. Following this, Lifshitz-van der Waals, acidic, basic, dispersive, and polar components of SFE were calculated using acid-base, geometric and harmonic mean approaches. In the present study, in which the significance of calculation methods and selected liquid pairs on SFE parameters were investigated, the effect of Au interlayer presence on SFE parameters were also evaluated simultaneously. The results showed that the total SFE values of ITO/Au/ITO multilayer thin films were found to be higher than that of ITO surface. The reasons behind this difference were discussed in terms of SFE components obtained using various liquid pairs by different methods. The results were also supported with XRD, XPS, AFM, and TEM analysis.

Comparative evaluation of moisture susceptibility of modified/foamed asphalt binders combined with different types of aggregates using surface free energy approach

Moisture damage in asphalt pavement is a major concern for the state and federal highway agencies for many years. The surface free energy (SFE) is demonstrated to be a reliable mechanistic approach for evaluating the moisture-induced damage potential of asphalt mixes. The objective of this study was to use SFE approach to evaluate the effects of foamed/modified asphalt binders and aggregate type on the moisture susceptibility of asphalt mixes. The SFE components (polar and dispersion) of PG 64-22 asphalt binders, modified with 2–4% SBS, 2–4% nanoclay, 2–4% fly ash, 3.5% devulcanized rubber (DVR), or foamed by injecting water, were estimated from contact angle measurement. Also, the SFE components of five types of aggregates, namely limestone, gravel, basalt, granite, and sandstone were obtained from the literature. The energy ratio parameters calculated from the work of cohesion and adhesion were used to estimate the moisture-induced damage potential of various asphalt mixtures. The results showed that the total SFE and work of cohesion of PG 64-22 increased with the addition of SBS, nanoclay, and fly ash while decreased with the use of DVR and foaming process in asphalt binder. Based on the energy ratio parameters, the combination of asphalt binder with different types of aggregates has been recommended with the resistance to moisture-induced damage potential. The results presented herein are expected to assist in selecting appropriate asphalt binder and aggregates with desirable moisture resistance.

Design of a Lipid-Coated Polymeric Material Mimic Human Skin Surface Properties: a Performing Tool to Evaluate Skin Interaction with Topical Products

An original nonbiological skin model (NBSM) has been developed to mimSic skin surface properties. This skin model presents several improvements when compared to existing ones: it has a topography identical to that of in vivo skin and a lipid composition close to that of the skin face. This imparts to the model surface a physicochemistry similar to in vivo skin. The concept and design of the skin model are presented, followed by an instrumental characterization performed using 3D microscopy, attenuated total reflectance-Fourier transformed infrared spectroscopy, and contact angle measurements. Surface free energy components are calculated for the NBSM using the Van Oss approach and compared to ex vivo experiments performed on human living skin explants. A comparison was made with the commercial skin model VITRO-SKIN, this latter being a reference in terms of the NBSM. The effect of several emollients on skin physicochemistry was investigated in vivo and on both nonbiological models. The study focused on several emollients and oils, including silicones and esters, and three emulsions (oil-in-water or water-in-oil). The results obtained confirm the high reliability of the developed model as it shows a skin-like surface behavior. This very interesting tool shows promising results concerning the study of the residual film present after product application or to study skin/product interactions.

Surface free energy method for evaluating the effects of anti-stripping agents on the moisture damage to asphalt mixtures

The moisture stability of an asphalt mixture was enhanced with cement, hydrated lime, and an anti-stripping agent (called AMR II) to improve the adhesive bond of asphalt with the aggregate. A total of eight asphalt binders and three aggregates (crushed gravel, limestone, and granite) were used for the preparation of different asphalt mixtures. Indirect tensile strength and residual stability tests were carried out to determine the moisture stability. The surface free energy (SFE) of the asphalt binder and aggregates were measured using the sessile drop method and universal sorption device method, respectively. Based on the SFE method, the cohesive, adhesive, and stripping energies of the asphalt and asphalt mixtures were studied. Moreover, the SFE parameters were introduced while analyzing the correlation of the cohesive, adhesive, and stripping energies of the asphalt with the moisture stability. The results show that the incorporation of a single or compound anti-stripping agent can improve the moisture stability of the asphalt mixture, and the improvement effect of compound agents is greater. Furthermore, the SFE components improved after the addition of the anti-stripping agent. The addition of the anti-stripping agent influenced the cohesive and adhesive energy remarkably, whereas the aggregate type, especially its silica content and specific surface area, has a significant effect on the adhesive and stripping energy of the asphalt mixture. A linear regression analysis suggested that the SFE parameters have a good correlation with the moisture damage properties. The SFE parameters can be used to determine the moisture damage performance, and the SFE method can be used to verify the moisture stability of asphalt mixtures.

Effect of additives and aging on moisture-induced damage potential of asphalt mixes using surface free energy and laboratory-based performance tests

ABSTRACT Lack of mechanistic foundation and poor correlations with field performance of conventional laboratory-based tests has accelerated the search for a mechanistic-based approach for screening of asphalt mixes for moisture-induced damages. According to recent studies, surface free energy (SFE) method can be used to mechanistically quantify bond strength and debonding of binder-aggregate system in presence of water. This study was undertaken to evaluate the effects of different additives, namely warm mix asphalt (WMA) additive (amine-derived), amine-based anti-stripping agent (ASA), polyphosphoric acid (PPA) and reclaimed asphalt pavement (RAP) on the moisture-induced damage performance of asphalt mixes through the use of laboratory-based performance tests and SFE method. For this purpose, different energy parameters were determined from SFE components of binder blends and aggregate. Asphalt mixes with different additives were produced to evaluate moisture-induced damage using indirect tensile strength (ITS) and Illinois semi-circular bend (IL-SCB) tests. A new parameter, known as fracture energy ratio (Gf ratio) obtained from IL-SCB test, was used to correlate fracture energy with moisture-induced damage potential of mixes. Also, the effect of short-term and long-term aging on the moisture-induced performance of asphalt mixes were evaluated. Furthermore, correlations between moisture-induced damage parameters from laboratory-based performance tests and SFE method were investigated.

An Equation-of-State approach to measure the surface free energy (SFE) of bituminous binders

To overcome the liquid set dependency of existing surface free energy (SFE) component approaches, this paper presents an Equation-of-State (EQS) approach to measure the SFE of bituminous binders. A succession of water-ethanol mixtures with varying surface tensions are first prepared as the test liquids. The Wilhelmy plate method is then adopted to measure the surface tension γL of each liquid as well as the contact angle θ between bituminous binder and each test liquid. A quadratic polynomial function is subsequently employed to fit the plot of γLcosθ versus γL. Combining Young’s equation and Good’s interaction parameter and then imposing a limiting condition in which the contact angle between bituminous binder and test liquid is exactly 0°, the SFE of a bituminous binder can be finally determined. This approach is verified to have capability to accurately measure the SFE of bituminous binders with a solid thermodynamic basis.

An investigation into the influence of aging and rejuvenation on surface free energy components and chemical composition of bitumen

The present work aims to study the influence of Waste Vegetable Oil (WVO) as a rejuvenator on the properties (physical, chemical and surface free energy (SFE)) of aged bitumen and assess the interaction between rejuvenator and aged bitumen in such blends. The study also investigated the relation between SFE components and SARA (acronym for Saturates, Aromatics, Resins and Asphaltenes) fractions in aged and rejuvenated bitumen. The SARA analysis was carried out by employing Thin-layer chromatography with flame ionisation detection (TLC-FID) technique. The SFE components of the bitumen for both aged and rejuvenated bitumen were determined by measuring the contact angles with different probe liquids using a sessile drop device.The test results on bitumen aged to different construction and in-service conditions suggested that the non-polar component of SFE (γLW) decreases with aging, which is due to a decrease in non-polar saturates and aromatics as demonstrated by TLC-FID analysis. However, the increase of the polar asphaltenes was not reflected in the trend for the polar component of SFE (γ+−) which was attributed to the aggregation of the asphaltenes into clusters in extremely aged bitumen. The findings from the study also suggested that γLW correlates, inversely, well with asphaltenes concentration rather than total SFE (γTotal) (or) γ+−.

Flexible polymer thermoelectric device based on PEDOT:PSS and surface treated pyromellitic dianhydride‐oxydianiline polyimide substrate

AbstractFlexible polymer thermoelectric devices based on poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and pyromellitic dianhydride‐oxydianiline polyimide polyimide (PI) were fabricated and investigated in this work. PI was selected as a substrate for PEDOT:PSS to secure from repeated bending cycles of flexible device. To enhance the interfacial adhesion between PEDOT:PSS and PI, oxygen plasma treatment was used on the surface of PI substrate. The effect of the surface treatment with oxygen plasma on the synthesized PI substrate was significant. The polar component of surface free energy of PI was increased from 2.8 to 31.8 mJ/m2. The power factor of PEDOT:PSS on the PI substrate was increased from 25.86 to 43.78 μW m−1 K−2. Also, as a result of 10 k times of bending test, the electrical performance consistency and the mechanical stability of the fabricated devices were confirmed. This verified fabricated flexible polymer thermoelectric devices based on PEDOT:PSS and PI are suitable for the various applications.

Study on the effect of hydrated lime content and fineness on asphalt properties

Hydrated lime is known to be an effective moisture damage additive, and it can also reduce the chemical ageing of the bitumen and stiffen the mastic. However, the optimum content and fineness of hydrated lime used in asphalt have been rarely studied. In order to determine the effect of lime content and fineness on hydrated lime modified asphalt and select the optimum lime content and fineness, XD90 asphalt, granite and 200 mesh, 300 mesh and 400 mesh lime with different lime content were chosen as experimental materials. At first, according to surface free energy method, the adhesion work Wa was chosen as the main index to evaluate the adhesion between asphalt and granite, and the asphalt surface free energy components after hydrated lime modification were tested. After that, basic technical properties of hydrated lime modified asphalt were studied to refine lime content and fineness. Finally, multiple stress creep and recovery and linear amplitude sweep tests were carried out respectively to study rheological properties of hydrated lime modified asphalt. The results showed that the asphalt adhesiveness increased with the increase of lime fineness, and the optimum lime content for asphalt adhesiveness was around 10%. Moreover, hydrated lime could raise the asphalt viscosity and stiffen asphalt. To make ductility meet the specification requirements, the lime content should be controlled below 10%. When lime content was around 3%–10%, hydrated lime modified asphalt had relatively good rheological properties compared with base asphalt. Meanwhile, the high temperature performance together with the ability to resist permanent deformation was improved apparently. In conclusion, taking into account the adhesion, rheology and basic properties of hydrated lime modified asphalt, the optimum lime content and fineness could be finally determined.

The influence of corrosion of TiO2 films on their surface properties

The work deals with the influence of TiO2 films corrosion in distilled water on the surface properties of TiO2 films. Films were prepared from the sol in “Ti(i-PrO)4 - IPA - H2O - HNO3” system by dip-coating technique. The surface properties of films were observed using atomic force microscopy and sessile drop method. The morphology and rms-roughness of prepared films were evaluated. On the basis of Fowkes method, the contact angles of films, using distilled water and diiodomethane, were used for determination of surface free energy and its polar and dispersion components. The given surface properties of TiO2 films were compared from the aspect of their preparation temperature (200, 300 and 400 °C) as well as corrosion in water. It was observed, that the film preparation temperature did not have noticeable influence on studied surface properties for non-corroded films. The influence of corrosion was observed only for films prepared at temperature of 300 °C and 400 °C. The corrosion in water influenced the morphology of film surface, increased the roughness, contact angle for water as well as the value of dispersion component of surface free energy.

Surface free-energy determination of copper wire using a large range of model liquids

In this paper, the surface free-energy of 700 µm-diameter copper wires as well as its dispersive and polar components has been determined. For this, the measurement method developed for assessing advancing and receding contact angles of liquids on vertical wires has been validated with polytetrafluoroethylene (PTFE) as a well-known material. Thus, it has been checked that the dynamic contact angles of different model liquids, such as dimethylformamide, tri-cresyl phosphate or ethylene glycol, on a PTFE wire held vertically are similar to those obtained on a PTFE plane surface. Then, the Owens–Wendt approach was chosen to determine the polar and dispersive components of surface free-energy of the PTFE wire using a large range of model liquids. A surface free-energy γPTFE = 18.7 ± 1.6 mN m−1 was obtained with a high dispersive component, γd ≈ 17.3 ± 1.0 mN m−1, in comparison with the polar one, γp ≈ 1.4 ± 0.6 mN m−1. Using the same approach for the copper wire, a surface free-energy γCu = 25.7 ± 0.7 mN m−1 was determined including mainly dispersive forces (γd ≈ 25.1 ± 0.5 mN m−1).

Mechanical micro-texturing and characterization on Ti6Al4V for the improvement of surface properties

The present study utilized a micro-milling facility to fabricate micro dimple textures with extruded center on Ti6Al4V. Geometrical parameters have been varied in order to study the surface properties. The area surface roughness and cross-sectional form of textures were measured by a 3D profilometer. Further, the equilibrium contact angle was measured with ultra-pure water, diiodomethane, and formamide. The surface free energy (SFE) was obtained by three different methods (Owen & Wendt, Wu, and LWAB). The SFE components calculated from LWAB approach sheds more light on the wetting behavior of textured surfaces. Results indicate that the formed textures are defect-free, in good shape and with sharp corners. The area surface roughness, hydrophilicity, and SFE of textured surfaces increases in all geometrical configuration. Further, the surface properties change with the size of the texture. The SFE calculated from all three approaches are in good agreement for each textures configuration. The present study may be helpful to facilitate protein adsorption, cell growth, adhesion, proliferation, and osseointegration rate and to provide insightful information about textured surface properties.

Correlation between microstructure of CAD/CAM composites and the silanization effect on adhesive bonding

The aim of this study was to investigate the relationship between the microstructure of a CAD/CAM composite and the silanization effect on adhesive bonding, using surface free energy (SFE) analysis. Six commercial CAD/CAM composites, as well as control samples of two glass-ceramics and a resin, were investigated. The samples were characterized by morphological observations and SFE analysis. The bonding characteristics of the samples with the resin-cement were evaluated according to the silanization effect, which was determined from the ratio between the shear-bond strengths for the sample groups, with and without a silane-primer application. The composites were classified into two groups in terms of their microstructure; ENAMIC exhibits a polymer-infiltrated-ceramic-network (PICN) structure, while the other composites have a dispersed-filler (DF) structure. The dispersive component of the SFE was significantly lower in the PICN composite than in the DF composites. On the other hand, the polar component of the SFE was significantly higher in the PICN composite than in the DF composites. These SFE components were similar to those of glass-ceramics for the PICN composite and to those of the resin for the DF composites. The silanization effect increased linearly with the polar component or with a decrease in the dispersive component. Additionally, the silanization effect increased with the inorganic content. As a result, the silanization effect was found to be the highest for the PICN structure of ENAMIC. The results revealed that the silanization effect on the adhesive bonding is more effective for a PICN composite than for a DF composite.

Using the surface free energy (SFE) method to investigate the effects of additives on moisture susceptibility of asphalt mixtures

Conventional methods for evaluating the effects of additives on moisture damage resistance of asphalt mixtures are either empirical or unable to quantify the contributions of material component properties to the overall mixture performance. To overcome these drawbacks, this study proposes a surface free energy (SFE) method to investigate the effects of various additives on moisture susceptibility of asphalt mixtures. One neat asphalt and one acidic gravel aggregate are selected as the test materials along with 6 commonly-used additives: a warm mix asphalt additive, two nano-materials, a hydrated lime, a Portland cement and a non-amine liquid asphalt anti-stripping agent. All the additives are blended with the neat asphalt to fabricate modified asphalt binders. The SFE components of these modified asphalt binders and the gravel aggregates are measured with the Wilhelmy plate method and the vapor adsorption method, respectively. An energy ratio, defined as the ratio of adhesion of asphalt-aggregate to that of asphalt-aggregate-water, is calculated and used to rank the asphalt mixtures that consist of gravel and asphalt binders modified with different additives in terms of their moisture susceptibility performance. In order to validate the proposed SFE method, two mixture moisture susceptibility tests, the modified boiling water test and the indirect tensile strength test, are conducted on loose and compacted asphalt mixtures, respectively. A consistent moisture susceptibility ranking is obtained from the SFE method and the mixture moisture susceptibility tests, which validates the SFE method proposed in this paper can be used to accurately quantify the effects of additives on the moisture susceptibility of asphalt mixtures.

Study on improvement of asphalt adhesion by hydrated lime based on surface free energy method

In order to study the improvement of hydrated lime (HL) on asphalt adhesion from mechanism, an asphalt-aggregate adhesion failure model was established based on surface free energy (SFE) method. In the model, the adhesion work Wa was chosen as the main index to evaluate the adhesion between asphalt and aggregate. Adhesion work was studied from two aspects: one was the polarity difference between asphalt and aggregate before and after HL modification, and the other was the variations of asphalt SFE before and after HL modification. The effect of HL on the polarity difference was studied by the changes of the SFE polarity component γap of solid asphalt and contact angle θ between solid asphalt and aggregate, based on SFE theory and sessile drop method respectively. And then, the SFE components between liquid asphalt and aggregate before and after HL modification were measured by improved Wilhelmy plate method. To exclude the effect of binder ageing occurred in the preparation of HL modified asphalt and verify the effectiveness of HL, rolling thin-film oven (RTFO) and pressure ageing vessel (PAV) tests were conducted on asphalt with and without HL modification. The results showed that HL could significantly reduce the polarity difference between asphalt and aggregate and raise the SFE of asphalt. The reduction of polarity difference and the increase of SFE both lead to the raise of adhesion work, resulting in the improvement of the adhesion between asphalt and aggregate. Moreover, the results of RTFO and PAV test illustrated that binder ageing occurred in the whole process of study would have negligible effect on asphalt adhesion. Therefore, it was concluded that SFE method would be a good choice to explain the improvement of asphalt adhesion by HL.

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings.

The diamond-like carbon (DLC) coatings containing 1.6%, 5.3% and 9.4 at.% of Ti deposited by the radio frequency plasma enhanced chemical vapor deposition (RF PECVD) method on the silicon substrate were modified by n-decylphosphonic acid (DP) and 1H, 1H, 2H and 2H-perfluorodecylphosphonic acid (PFDP). The presence of perfluoro and alkylphosphonic self-assembled monolayers prepared by the liquid phase deposition (LPD) technique was confirmed by Fourier transform infrared spectroscopy (FTIR). It was shown that DP and PFDP monolayers on the surface of titanium incorporated diamond-like carbon (Ti-DLC) coatings had a huge influence on their wettability, friction properties, stability under phosphate- and tris-buffered saline solutions and on antimicrobial activity. It was also found that the dispersive component of surface free energy (SFE) had a significant influence on the value of the friction coefficient and the percentage value of the growth inhibition of bacteria. The dispersive component of SFE caused a reduction in the growth of bacteria and the friction coefficient in mili- and nano-newton load range. Additionally, both self-assembled monolayers prepared on Ti-DLC coatings strongly reduced bacterial activity by up to 95% compared to the control sample.