Role Of Multi-walled Carbon Nanotubes Research Articles

The role of multi-walled carbon nanotubes in enhancing the hydrolysis and thermal stability of PLA.

Polylactic acid (PLA) is a bioresorbable and biodegradable polymer extensively used in various biomedical and engineering applications. In this study, we investigated the mass loss and thermal properties of PLA-multi-walled carbon nanotube (MWCNT) composites under simulated physiological conditions. The composites were prepared by melting PLA with 0.1, 0.5, 1.0, and 5.0 wt% MWCNTs using an ultrasonic agitator, and FTIR analysis confirmed composite formation. Subsequently, the composites were subjected to hydrolysis under simulated physiological conditions (pH 7.4 and 37°C) for up to 60days. The results revealed that the mass loss of the composites decreased with increasing MWCNT content, suggesting that the presence of MWCNTs decelerated the hydrolysis process. On day 58, the mass loss of pure PLA was 12.5%, decreasing to 8.34% with 0.1% MWCNT, 5.94% with 0.5% MWCNT, 4.59% with 1% MWCNT, and 3.54% with 5.0% MWCNT. This study offers valuable insights into the behavior of PLA-MWCNT composites under physiologically simulated conditions, facilitating the development of new polymer composites with enhanced thermal stability and degradation resistance for biomedical applications.

The Role of MWCNTs in Enhancing the Foam Stability and Rheological Behavior of Cement Pastes That Contain Air-Entraining and Superplasticizer Admixtures.

This research delves into the intricate dynamics between multi-walled carbon nanotubes (MWCNTs), air-entraining admixtures (AEAs), and a range of superplasticizers (SPs) in cementitious systems, shedding light on key aspects of construction material innovation. The focus is on how MWCNTs, AEAs, and specific SPs-namely, lignosulfonate (LS), polycarboxylate (PCE), and polyacrylate (PA)-influence the stability of foams and the viscosity and setting times of cement pastes. To assess the impacts of these components, we employed foam stability assessments, viscosity measurement techniques, electrical conductivity analysis, and evaluations of dispersion and setting times. Results indicate that MWCNTs enhance foam stability and viscosity, with the degree of improvement contingent on the type and concentration of SPs and the presence of AEAs. Notably, SPs, particularly PCE and PA, markedly influence the properties of cement paste, including increasing dispersion values and modulating setting times, especially when combined with MWCNTs and AEAs. The study concludes that strategically combining MWCNTs with specific SPs and AEAs alters the physical properties of cementitious materials significantly, underscoring the potential for customizing material design in the construction sector.

Influence of multi-walled carbon nanotubes on the solidification process of an Al-12 %Si alloy

This paper investigates the influence of multi-walled carbon nanotubes (MWCNT) on the solidification process of an Al-12 %Si alloy. Amulti-phase Eulerian model of solidification is deployed to numerically handle the problem. The simulation determines the cooling curve and addresses the recalescence phenomena along with the estimation of the columnar and globular solid phases;precipitating silicon (PSP) phase and MWCNT phase distributions. The findings reveal that MWCNT significantly affects the cooling rate, leading to multiple recalescence phenomena, and influences the formation and evolution of the columnar and globular grains. MWCNT also impacts silicon segregation, causing fluctuations in silicon phases and redistribution. Furthermore, the study explores the distribution of MWCNT throughout the material and identifies a critical time period for their influence. Overall, the study enhances our understanding of the complex dynamics within the solidification process and provides insights into the role of MWCNT in shaping the microstructure through a mathematical model.

Hyaluronic acid modified carbon nanotubes using for photothermal therapy by promoting apoptosis of nasopharyngeal carcinoma cells.

Background: The present work illustrates the role of multi-walled carbon nanotubes in photothermal therapy. Nasopharyngeal carcinoma (NPC) is a malignant tumor of the head and neck with significant ethnic and geographic differences, and conventional treatment options are no longer suitable to improve the prognosis and survival of patients. Photothermal therapy (PTT) has emerged as a new strategy for oncology treatment in recent years and is now used in the treatment of many common cancers. Multi-walled carbon nanotubes (MWCNT) have been used to advantage in several fields due to their excellent thermal conductivity. The aim of this paper is to investigate the promotion of apoptosis of nasopharyngeal cancer cells by multi-walled carbon nanotubes as an adjuvant nanomaterial for nasopharyngeal cancer photothermal therapy. Methods: Carboxylated multi-walled carbon nanotubes and prepared multi-walled carbon nanotube-hyaluronic acid (MWCNT-HA) composites were used for cell proliferation-related experiments such as CCK-8 assay, live-dead staining and flow cytometric analysis and inverted fluorescence microscopy to determine the expression level of apoptotic factors and confocal microscopy cell morphology analysis on nasopharyngeal carcinoma CNE-1 cells under near-infrared laser irradiation. The effects of multi-walled carbon nanotubes on the proliferation and apoptosis of tumor cells under NIR response were elucidated, and the mechanism of apoptosis was explored. Results: TEM and SEM demonstrated that MWCNT had good appearance morphology and the temperature rise curve indicated excellent photothermal stability. And MWCNT and MWCNT-HA could significantly inhibit the proliferation of tumor cells and change the normal morphology of cells under NIR laser irradiation. Cellular immunofluorescence analysis confirmed that MWCNT-HA significantly upregulated the expression level of apoptosis factor Caspase-3 and significantly downregulated the expression level of anti-apoptosis factor Bcl-2. Conclusion: In this study, MWCNT inhibited the proliferation of tumor cells and promoted apoptosis through the use of multi-walled carbon nanotubes as an adjuvant nanomaterial for photothermal therapy. In addition, multi-walled carbon nanotubes could inhibit the mitochondrial pathway of CNE-1 cells to cause cell death. These studies suggest that multi-walled carbon nanotubes can function as efficient photothermal conversion materials for tumor photothermal therapy.

Unraveling the role of multi-walled carbon nanotubes in a corn-soil system: Plant growth, oxidative stress and heavy metal(loid)s behavior

In the age of nanotechnological advancement, carbon nanotubes (CNTs) are drawing global attention. However, few studies have been published on the crop growth responses to CNTs in heavy metal(loid)s contaminated environments. A pot experiment was conducted to assess the effect of multi-walled carbon nanotubes (MWCNTs) on plant development, oxidative stress, and heavy metal(loid)s behavior in a corn-soil system. Corn (Zea mays L.) seedlings were cultivated in soil containing Cadmium (Cd) and Arsenic (As) that had been primed with 0, 100, 500, and 1000 mg kg−1 MWCNTs. The application of 100 and 500 mg kg−1 MWCNTs improved shoot length by 6.45% and 9.21% after 45 days, respectively. Total plant dry biomass increased by 14.71% when treated with 500 mg kg−1 MWCNTs but decreased by 9.26% when exposed to 1000 mg kg−1 MWCNTs. MWCNTs treatment did not affect Cd accumulation in plants. On the other hand, the bio-concentration factor of As was inversely associated with plant growth (p < 0.05), which was declined in MWCNTs treatments. Oxidative stress was aggravated when plants were exposed to MWCNTs, thus activating the antioxidant enzymes system in the corn. In contrast, TCLP-extractable Cd and As in soil significantly decreased than in the control. Additionally, the soil nutrients were changed under MWCNTs treatments. Our findings also revealed that a particular concentration of MWCNTs can mitigate the toxicity of Cd and As in corn seedlings. Therefore, these results suggest the prospective application of CNTs in agricultural production, ensuring environmental and soil sustainability.

Flexural creep of multi-wall carbon nanotube reinforced cement based composites under high stress level

Different concentrations (0–0.2 wt.%) of multiwall carbon nanotubes (MWCNT) was used to improve the mechanical properties of cementitious composites. The first part of the work showed that adding 0.05 wt.% of MWCNT produced a maximum reinforcement in terms of flexural and compressive strength. The second, the role of MWCNT on mechanical strength improvement was investigated. MWCNTs can absorb water to weaken the cement hydration at the beginning, and then, release water to promote the hydration of cement. The third part focused on using a home-made four-point bending testing device to study the flexural creep behavior under high stress levels (70, 80 and 90% of the flexural strength) and the results are discussed in terms of creep strain and Poisson ratio difference. The data obtained were also compared with the empirical creep models and the creep coefficients obtained were agreement with that from the AASHTO model. Finally, a regression analysis was used to fit the creep compliance of MWCNTs reinforced cementitious composites for the range of conditions studied. The results showed that the creep compliance can be fitted by a power-law for a stress level below 0.85, while a linear function was obtained above.

Beneficial Role of Multi-Walled Carbon Nanotubes on Physiological and Phytochemical Responses of Mentha piperita L under Salinity Stress

MWCNTs (Multiwalled Carbon Nanotubes) are nanomaterials that can enter the soil through various sources. Our understanding of the effects of MWCNT on plant growth is not yet complete and needs to be further studied. In this study, the possible effects of MWCNTs (0, 50 μg/ml, 200 μg/ml) on the growth, physiological, and phytochemical performance of Mentha piperita plants under 50, 100, and 200 mM NaCl stress in greenhouse conditions were investigated. Changes in the essential oil of M. piperita were analyzed by GC. The most physiological and photosynthesis characteristics of M. piperita seedlings were negatively affected when plants were grown at different concentrations of NaCl. With increasing the salt concentration to 200 mM, a significant decrease was observed in the fresh and dry weight of the plant and the number of plant branches. The presence of both doses of MWCNTs significantly enhanced relative water content (RWC), chlorophyll content, growth indices, and essential oil percentage. Also, the plants treated with both MWCNTs and NaCl showed higher antioxidant enzyme activities such as superoxide catalase and peroxidase content under salinity stress. Among the different concentrations of carbon nanotubes, 200 μg/ml has a potential effect on physiological and biochemical parameters in plants under salinity stress. It is proposed that MWCNTs can significantly improve growth and salt tolerance in M. piperita plants by promoting water uptake, antioxidant enzyme activity, and photosynthesis performance. It can be concluded that MWCNTs improved the stress condition for the plant and reduced the plant's metabolic response to stress.

Role of Multiwalled Carbon Nanotube in the Improvement of Compaction and Strength Characteristics of Fly Ash Stabilized Soil

Role of Multiwalled Carbon Nanotube in the Improvement of Compaction and Strength Characteristics of Fly Ash Stabilized Soil

Optimized Reduction of a Graphene Oxide‐MWCNT Composite with Electrochemically Deposited Copper Nanoparticles on Screen Printed Electrodes for a Wide Range of Detection of Nitrate

AbstractIn this report, we demonstrate the capability of electrochemically deposited copper (Cu) nanoparticles on electrochemically reduced graphene oxide (ERGO)‐multiwalled carbon nanotubes (MWCNT) composite on screen printed carbon electrodes (SPCE) for electrochemical detection of nitrate. Prior to the detection, extensive fundamental investigations on the electrochemical reduction of GO on SPCE and role of MWCNT in the reduction process and the degree of reduction have been carried out which has not been previously reported. Profiting from the complementary information obtained from electrochemical impedance spectroscopy, Raman spectroscopy, and cyclic voltammetry (CV), the role of MWCNT and optimal number of scans in CV (15 scans) for the reduction was obtained. The determination of nitrate on Cu/ERGO‐MWCNT/SPCE was performed by square wave voltammetry and shows a wide linear range from 10 to 750 μM and low limit of detection of 3.3 μM, thereby enhancing the applicability of the developed electrode in the regions of low and high concentrations as well. The electrode was tested in tap water and the analytical capability was compared using F‐test and matrix effect (4.8 %), which highlights excellent analytical ability of the Cu/ERGO‐MWCNT modified electrodes to detect nitrate.

Role of multi-walled carbon nanotubes as a growth regulator for Basella alba (Malabar spinach) plant and its soil microbiota

The effect of pure multi-walled carbon nanotubes (MWCNTs) was studied on the development and morphology of the Basella alba plant. The plants were treated with varying sonicated concentrations of MWCNTs. The parameters taken into consideration were germination percentage of seeds, protein content in the plant, estimation of chlorophyll concentration, and the effect on the soil microbial community after treatment with MWCNTs. A boost in vigour index was recorded with the 200 µg ml−1 concentration of MWCNTs. Increment in other parameters like protein content, chlorophyll concentration, and microbial community in soil samples have also been observed. All parameters showed higher efficiency in a concentration-dependent manner of MWCNTs compared to control by testing the significance of results through statistical one-way ANOVA analysis. The uptake of MWCNTs by plants was confirmed by SEM–EDX analysis of treated and control leaf tissue sections. This study concludes that MWCNTs exhibit significant growth effects with no toxicity to Basella alba.Graphical

Effect of MWCNTs surface functionalization group nature on the thermoelectric power factor of PPy/MWCNTs nanocomposites

This work aims to put forward the role of multiwalled carbon nanotubes (MWCNTs) surface functionalization on the enhancement of thermoelectric (TE) power factor of new nanocomposite-based polypyrrole/surface modified multiwalled carbon nanotubes (PPy/MWCNTs), prepared by a facile in-situ oxidative polymerization process. In fact, MWCNTs’ content was fixed to ∼11 wt%, and their surfaces were respectively modified with different functional groups (benzoic acid (-D1), benzene tricarboxylic acid (-D3), -O, -COOH, -NH2 and -SH). After running all the required, spectral, structural, morphological, and thermoelectrical characterizations, it is revealed that the nanocomposites-based functionalized MWCNTs remarkably increase the Seebeck coefficient, and thus enhancing the material’s power factor. This improvement of TE power factor was attributed to the coating homogeneity and the good interaction between PPy and MWCNTs mainly through π–π stacking between the polymer chains and the nanotubes as well as electrostatic, hydrogen bonding, and electrons donor/acceptor groups interactions due to the functional groups grafted on the nanotube’s sidewall. The highest power factor value (0.51 μWm−1K−2) was obtained with PPy/MWCNTs-SH, which means an enhancement of 8 folds compared to pure PPy. Considering the content of MWCNTs and the ease of preparation process, these results might help to develop future TE materials and devices.

How multi-walled carbon nanotubes in wastewater influence the fate of coexisting antibiotic resistant genes in the subsequent disinfection process.

Wastewater treatment plants (WWTPs) are important hubs for the spread of antibiotic resistance genes (ARGs). Engineered nanoparticles, which was inevitably released to WWTPs, could change environmentally sensitive of antibiotic resistant bacteria (ARB). This would influence the fate of ARGs in subsequent disinfection process and consequent health risk. In this study, the ARGs fate of the effluent in conventional sodium hypochlorite (NaClO) disinfection process was investigated as multi-walled carbon nanotubes (MWCNTs) existed in sequencing batch reactor (SBR). The results showed the existence of MWCNTs in SBR could enhance the removal efficiency of intracellular 16S rRNA gene and intI1, extracellular intI1, sul2 and tetX in the effluent by NaClO. This is mainly due to the variation of bacterial physiological status, bacterial population structure and the activation of NaClO under the role of MWCNTs. MWCNTs in SBR could increase in membrane permeability of bacterial cells, which would be conducive to the penetration of chlorination to cytoplasm. MWCNTs in SBR also could change the bacterial population structure and induce the chlorine-sensitive bacteria; thus the potential hosts of ARGs in the effluent would be more easily inactivated by NaClO. Moreover, the residual MWCNTs in the effluent could activate NaClO to generate various free radical, which would enhance the oxidizing capacity of chlorination.

Assessing the electrical property of carbon nanotube reinforced oxide ceramic matrix composites produced by ceramic injection moulding

Owing to its remarkable properties, multiwalled carbon nanotubes (MWCNTs) are attracting the interest for realization of sensors. The potential of MWCNTs for high temperature sensing applications was investigated by integration within reinforced aluminium oxide ceramic composite. MWCNTs up to 2 wt% were mixed with reinforced aluminum oxide ceramic composite using solution mixing method to ensure good homogeneilty of the oxide ceramic composite powders. Specimens were realized using ceramic injection moulding process (CIM) followed by debinding and sintering procedures. The topography of specimens were examined using atomic force microscopy (AFM). Electrical measurements were also carried out. The results show good demouldability at high MWCNTs concentration and homogenous distribution of the MWCNTs within the oxide ceramic matrix. AFM images illustrate the reduction of surface roughness by increasing the MWCNTs content which demonstrates the role of MWCNTs to improve the fracture resistance of the oxide ceramic matrix composite. As well, the electrical resistance of the feedstocks were reduced sharply. After sintering process, the resistance range drops enormously from M Ω to reach 12.1 Ω at low MWCNTs content; which make them suitable to be as electrode with high temperature capability. The electrical resistance temperature dependency shows a negative temperature coefficient behaviour with negligible resistance change.

The role of multi-walled carbon nanotubes for improving C-S-H creep property: An insight from atomic force microscope and nuclear magnetic resonance

The effect of MWCNTs on the creep properties of C-S-H was investigated based on nanoindentation test, and the detailed mechanism analysis was carried out by atomic force microscope (AFM) and nuclear magnetic resonance (NMR)in this paper. The Portland cement and multi-walled carbon nanotubes (MWCNTs) grafted with COOH were used in the experiments. The water to cement ratio was 0.3 and the content of MWCNTs was 0.05 wt% of cement. The results of nanoindentation test showed that the creep modulus of low density C-S-H and high density C-S-H of the sample doped with MWCNTs (CC) was 39.2% and 21% higher than that of the control sample (PC), respectively, indicating the creep deformation of C-S-H was significantly reduced by MWCNTs. Foil shape in CC was observed, and the elastic modulus and Hamaker constant of C-S-H at submicron-scale were higher than those of PC measured by AFM. The results of mercury intrusion porosimetry test showed that the porosity and most probable pore size of CC decreased compared with PC. The mean chain length increased for CC measured by 29Si NMR. And the low-filed 1H NMR results showed that the proportion of interlayer water was almost not changed with the incorporation of MWCNTs, suggesting that the influence of interlayer water on C-S-H creep properties can be ignored. Based on the experimental results, the mechanism was proposed to explain the decrease of C-S-H creep deformation by MWCNTs: (1) foil shape C-S-H was not easy to slip; (2) less free volume available for globules to slip;(3) the stronger force existed between globules; (4) the network structure was formed in C-S-H due to the presence of MWCNTs and the elastic modulus of C-S-H increased, resulting in more resistance for deformation.

A study on the role of multi-walled carbon nanotubes on the properties of electrospun Poly(Caprolactone)/Poly(Glycerol sebacate) scaffold for nerve tissue applications

Nerve tissue engineering is an alternative interdisciplinary strategy with the aim of regenerating damaged nerves by combining life science and engineering. In the present work, aligned PCL/PGS fibers containing different amounts of multi-walled carbon nanotubes (MWCNTs; 0, 0.5, 1, and 1.5 wt%) are fabricated using electrospinning technique. The effect of MWCNTs loading on the morphology and diameter of the electrospun fibers is investigated by scanning electron microscopy (SEM). Transmission electron microscopy (TEM) is used to show how MWCNTs are distributed in the fibers. Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), tensile strength, contact angle, degradation and water uptake analyses are utilized to assess the physicochemical properties of scaffolds. Cell viability and adhesion on PCL/PGS/MWCNTs fibers are employed through MTT assay and SEM analysis, respectively. The results revealed all fibers were aligned and uniform in mean diameter showing a decrease from 833 to 476 nm by increasing MWCNTs. TEM images indicated that the embedded MWCNTs particles into fibers are oriented along the electrospinning direction. The Young's modulus, ultimate tensile strength, wettability, and water uptake of the scaffolds increased with the increase of MWCNTs unlike the degradation rate. The examination of Rat pheochromocytoma cells (PC12) viability and adhesion demonstrated the positive effect of MWCNTs on cell-scaffold interaction. Finally, the results suggested PCL/PGS/MWCNTs scaffolds as a promising biodegradable biomaterial for nerve tissue engineering.

The Role of Multi-Walled Carbon Nanotubes for Improving C-S-H Creep Property: An Insight from Atomic Force Microscope and Nuclear Magnetic Resonance

The Role of Multi-Walled Carbon Nanotubes for Improving C-S-H Creep Property: An Insight from Atomic Force Microscope and Nuclear Magnetic Resonance

Targeting functionalised carbon nanotubes at the interphase of Textile Reinforced Mortar (TRM) composites

Tensile performance of textile reinforced inorganic matrix composites strongly depends on the matrix-to-fabric bond strength, that is the weak chain in the system. In this work, we investigate the role of multi-walled carbon nanotubes (MWCNT) dispersion in an amorphous silica nano-coating for AR-glass and carbon fabric Textile Reinforced Mortar (TRM) composites. Two lime mortars are considered at 56-day curing. Comparative mechanical testing in uni-axial tension show remarkable enhancements in terms of mean ductility, strength and energy dissipation capabilities. Besides, coating successfully hinders telescopic failure and delamination, which significantly narrows data scattering and benefits design limits. Crack pattern analysis reveals that coating promotes diffuse cracking in the specimen, with gradual and progressive damage buildup. Indeed, mean crack width and mean crack spacing are consistently reduced. BET, optical and E-SEM microscopy supports the action mechanism of the coating, that promotes wettability, surface roughening and imparts a remarkable increase in the specific surface area of the reinforcement.

Photoelectrochemical performance of MWCNT–Ag–ZnO ternary hybrid: a study of Ag loading and MWCNT garnishing

Herein, by using chemical methods such as successive ionic layer adsorption and reaction (SILAR) and spin coating we have demonstrated a novel strategy for the synthesis of ternary hybrid to study photoelectrochemical (PEC) performance. To the best of our knowledge, for the first time we have represented a case study of achieving optimum SILAR cycles for Ag nanoparticles decoration on ZnO nanorods and a discussion was made on a role of multi-walled carbon nanotube (MWCNT) as a top layer over Ag–ZnO nanostructures for better PEC performance. Firstly, Ag nanoparticles loading over SILAR grown ZnO nanorods was varied for different SILAR cycles to optimize better photocurrent. This Ag–ZnO hybrid showed higher photocurrent density of 0.45 mA/cm2 at 1 V bias (vs SCE) and photoconversion efficiency (PCE) of 0.21% (0.45 V vs SCE). Thereafter, MWCNTs were garnished by using spin coating as a top layer on Ag–ZnO hybrid leading to the formation of ternary hybrid of MWCNT–Ag–ZnO for further enhancement of PEC activity. We believe that top layer of MWCNT plays a vital role of electron and hole transfer and bridges Ag decorated ZnO nanorods together leading to well-connected conducting pathways for efficient charge collection and transport. The appropriate band bending of MWCNT–Ag–ZnO hybrid leads to the formation of active interface helping out in charge separation leading to excellent photocurrent density of 0.56 mA/cm2 at 1 V bias (vs SCE) and photoconversion efficiency of 0.26% (0.45 V vs SCE). Enhanced light harvesting, higher donor density, appropriate band bending, lowest charge transfer radius of C–Ag–ZnO hybrid signifies that efficient charge transfer and restriction to charge recombination leading to the enhanced PEC performance.

The role of multiwall carbon nanotubes on physical, mechanical and rheological properties of poly(lactic acid)/natural rubber/CNT hybrid systems

The main objective of the present work was to study the role of carbon nanotube (CNT) on the microstructure development and physical, mechanical, and rheological properties of poly(lactic acid) (PLA)/natural rubber (NR)/CNT hybrid nanocomposites. The PLA/NR blend samples with constant blend ratio (90/10) were prepared by melt mixing in a laboratory internal mixer at a temperature of 190°C. The behavior of the PLA/NR blend was examined depending on the CNT content (0.5–6 wt%). The droplet size and droplet size distribution of the NR phase decreases with the increase in CNTs content. This could be explained in terms of compatibilizing effect of CNT and the changing of the viscosity ratio of the blend phases. The development of the microstructure and the physical properties of the blend were also investigated according to the CNT contents by measuring the linear viscoelasticity. The elongational behavior and mechanical properties of the blends were strongly dependent on the location of the CNT. The CNT worked as an efficient compatibilizer and also it worked as a reinforcing filler making the matrix more rigid.

Microstructural Evolution and Mechanical Properties of Multiwall Carbon Nanotubes Reinforced Titanium-Based Nanocomposites Developed by Spark Plasma Sintering

In this study, the role of multiwall carbon nanotubes (MWCNT) on the microstructural evolution and mechanical properties of Ti6Al4V-based composites was investigated. This was conducted by dispersing different concentrations (0.5, 1.0 and 1.5 wt%) of MWCNT into the Ti6Al4V matrix using shift-speed ball milling technique. Thereafter, the Ti6Al4V and the nanocomposites were consolidated via the spark plasma sintering technique. Various characterization techniques; scanning electron microscopy (SEM), transmission electron microscopy (TEM) and light microscopy were conducted to understand the microstructural evolution of the samples after the dispersion and sintering process. Subsequently, micromechanical and nanoindentation was carried out to reveal the mechanical properties of the fabricated samples. The morphological examination using SEM and TEM revealed the dispersibility of MWCNT dispersed within the Ti6Al4V matrix. Besides, the selected area diffraction and the fast Fourier Transform pattern demonstrated that the increase in concentration of the MWCNT exposed the nanotubes to adverse stresses during the dispersion process. Furthermore, the incorporation and increase in concentration of the MWCNT in the titanium alloy resulted in microstructural and phase changes, which translate to tremendous improvements in microhardness, nanohardness and elastic modulus up to 46.9%, 150.8%, and 169.5% respectively.