Nonwoven Cotton Research Articles

Barrier and mechanical properties of water-based polyurethane-coated hydroentangled cotton nonwovens

Barrier and mechanical properties of water-based polyurethane-coated hydroentangled cotton nonwovens

Cost-effective fabrication, antibacterial application and cell viability studies of modified nonwoven cotton fabric

In the present work, nonwoven cotton fabric was modified for antibacterial applications using low-cost and eco-friendly precursors. The treatment of fabric with alkali leads to the formation of active sites for surface modification, followed by dip coating with silver nanoparticles and chitosan. The surface was chlorinated in the next step to transform amide (N–H) groups in chitosan into N-halamine (N-Cl). The modified and unmodified surfaces of the nonwoven cotton fabric have been characterized by FTIR, SEM, and XRD. The active chlorine loading is measured with iodine/sodium thiosulphate. The antimicrobial activity and cell toxicity assay were carried out with and without modifications of nonwoven cotton fabric. The antimicrobial efficacies of loaded fabric were evaluated against four bacterial species (Micrococcus luteus, Staphylococcus aureus, Enterobacter aerogenes, and E.coli). It was found that modified fabric exhibited superior efficiency against gram-positive and gram-negative bacterial strains as compared to their bulk counterparts upon exposure without affecting strength and integrity of fabric. The overall process is economical for commercial purposes. The modified fabric can be used for antimicrobial, health, and food packaging industries, and in other biomedical applications.

Effect of erosive parameters on solid particle erosion of cotton fiber–based nonwoven mat/wooden dust reinforced hybrid polymer composites

Abrasive particle-induced erosive wear of polymeric engineering components is a major industrial issue. The research of solid particle erosion characteristics of polymeric composites becomes essential due to operational needs in dusty conditions. Nonwovens are now employed in industrial applications for polymeric composites. Nonwoven products are made from a wide range of raw materials, ranging from synthetic to natural fibers. This work finding the effect of nonwoven cotton fiber (5, 10, and 15 wt.%) loading on the physical, mechanical, and erosion wear of fixed wooden dust (4 wt.%) filled hybrid epoxy composites. Experimental results reveal improved impact strength, hardness, and compressive and tensile strength with an increment of fiber loading from 5–15 wt.%. The density of the composites was found to increase, whereas void content decreases with an increase in cotton fiber. The erosion wear of the composites has been studied using an L27 orthogonal array to assess the effects of various parameters such as fiber loading, erodent size, impact velocity, impingement angle, and stand-off distance. The erosion wear increased with impact velocity and remained highest for 60° of impingement angle. The most significant parameter affecting the erosion wear was determined as impact velocity followed by impingement angle. Surface morphologies of eroded samples reveal the fiber pull-out, and fiber breakage was the prominent phenomenon for the erosion wear of the evaluated composites.

Ag/Zn Galvanic Couple Cotton Nonwovens with Breath-Activated Electroactivity: A Possible Antibacterial Layer for Personal Protective Face Masks.

The water vapor exhaled by the human body can severely accelerate the charge dissipation of commercial face masks, thereby reducing the electrostatic adsorption efficiency and increasing the bacterial invasion risk. This study developed an electroactive antibacterial cotton nonwoven (Ag/cotton/Zn) using eco-friendly magnetron sputtering technology. The Ag/Zn electrode constructed on the surface of cotton nonwovens could produce a microelectric field in the moist environment of human respiration, which endowed Ag/cotton/Zn with excellent electroactivity. When Ag/cotton/Zn was used as an additional layer of polypropylene melt-blown nonwovens or polylactic acid nanofibers, the prepared personal protective air filter had a filtration efficiency of up to 96.8% and an appropriate pressure drop and air permeability. The antibacterial results based on bacterial aerosols showed that the antibacterial efficiency against Escherichia coli and Staphylococcus aureus in 20 min was 99.74 and 99.79%, respectively, indicating an excellent electroactive killing efficiency against airborne bacteria. In addition, Ag/cotton/Zn showed excellent biological security. These results shed some light on the design and fabrication of next generation of personal protective air filter materials driven by human breathing.

Synthesis and Characterization of Nonwoven Cotton-Reinforced Cellulose Hydrogel for Wound Dressings.

Hydrogels wound dressings have enormous advantages due to their ability to absorb high wound exudate, capacity to load drugs, and provide quick pain relief. The use of hydrogels as wound dressings in their original form is a considerable challenge, as these are difficult to apply on wounds without support. Therefore, the incorporation of polymeric hydrogels with a certain substrate is an emerging field of interest. The present study fabricated cellulose hydrogel using the sol–gel technique and reinforced it with nonwoven cotton for sustainable wound dressing application. The nonwoven cotton was immersed inside the prepared solution of cellulose and heated at 50 °C for 2 h to form cellulose hydrogel–nonwoven cotton composites and characterized for a range of properties. In addition, the prepared hydrogel composite was also loaded with titania particles to attain antibacterial properties. The Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the formation of cellulose hydrogel layers inside the nonwoven cotton structure. The fabricated composite hydrogels showed good moisture management and air permeability, which are essential for comfortable wound healing. The wound exudate testing revealed that the fluid absorptive capacity of cellulose hydrogel nonwoven cotton composite was improved significantly in comparison to pure nonwoven cotton. The results reveal the successful hydrogel formation, having excellent absorbing, antimicrobial, and sustainable properties.

Amino acid-mediated loading of Ag NPs and tannic acid onto cotton fabrics: Increased antibacterial activity and decreased cytotoxicity

In this paper, L-cysteine (Cys) is firstly bonded to the surface of cotton non-woven (CO) fabric as esterification. In this way, Ag+ and tannic acid (TA) are adsorbed onto the modified fabric via complexation and hydrogen bond interaction. After a sustainable one-step redox reaction, a Cys modified CO fabric decorated with Ag NPs and TA (CO-Cys-Ag-TA) is prepared. Because of the stabilizing effect of Cys and TA, the synthesized Ag NPs with a mean size of 88.9 nm are uniformly distributed on the modified fabric surface. Through the comparative test, it has been revealed that the antibacterial activity of Ag NPs is improved after loading TA, and the loading of Ag NPs significantly reduces the cytotoxicity of TA. In this context, the bacteriostatic reduction rate of CO-Cys-Ag-TA against S. aureus and E. coli is close to 100%, and its antibacterial activities are greater than 98.5% after 50 washing cycles. Meanwhile, its cell viability value reaches up to 88.0% with the presence of 0.1 mg/mL to 0.8 mg/mL CO-Cys-Ag-TA.

Bio-scouring of Non-spinnable Cotton by a Crude Enzyme of a New Fungal Strain Aspergillus sp. VM-1, Isolated from Banana Pseudostem Waste

In the present study, we isolated and identified a new fungus, Aspergillus sp VM-1 from banana pseudostem waste. The fungal strain, Aspergillus sp. VM-1 was grown on a substrate (banana pseudostem, cottonseed hulls and cottonseed meal in the ratio of 60:30:10, respectively) for 7 days and the crude enzyme was extracted from the fermented substrate. The pectinase activity in crude enzyme extract was 551 (U/ml). The crude enzyme extracted from Aspergillus sp. VM-1 was evaluated for bio-scouring of non-spinnable cotton. The non-spinnable cotton taken in the study was short staple cotton (SSC), cotton linters (CL) and non-woven cotton fabric (NWCF). The maximum absorbency (2 s) in non-spinnable cotton was achieved under optimized process conditions: enzyme extract level (40%), temperature (40 ± 2 °C) and time (40 min). The quality parameters of bio-scoured cotton meet the Indian Pharmacopoeia (IP) standards. A solid state fermenter was designed to scale-up the crude enzyme production up to 30 l. This is the first report on bio-scouring of under-utilized short cotton fibres at lower temperature (40 ± 2 °C). The present study offers a simple and eco-friendly bio-scouring process as an alternative to toxic chemical scouring of under-utilized short staple cotton fibres.Graphic Supplementary InformationThe online version contains supplementary material available at 10.1007/s12649-021-01621-9.

Non-woven cotton fabric based intimately coupling of photocatalysis and biodegradation system for efficient removal of Cu(II) complex in water

The efficient remediation of heavy metal complexes in water has become a difficult and challenging task owing to their high stability and strong mobility. In this study, a novel strategy was employed for highly efficient removal of Cu-citrate by using intimately coupled photocatalysis and biodegradation (ICPB) system with non-woven cotton fabric as a carrier. Experimental results showed that the ICPB system caused 94% Cu removal, which was higher than those of single photocatalysis. After 5 cycles, Cu removal efficiency could still reach 78% within 5 h. The existence of 0–40 mg/L citrate had negligible influence, whereas the presence of 60–100 mg/L citrate exhibited a limited adverse effect on Cu removal (∼70%). The decomplexation of Cu-citrate was realized via the function of free radicals and microorganisms. Two main processes, such as bio-adsorption of Cu2+ by microorganisms, deposition of Cu0 on the surface of material, played important role in Cu removal from aqueous solution. The dominant microorganisms in the system were Proteobacteria, Actinobacteria, Bacteroidetes, Chloroflexi, Chlorophyta, Planctomycetes, and Verrucomicrobia. Furthermore, the performance of ICPB system was also validated through treatment of other heavy metal complexes. This study provided a feasible strategy for the decontamination of heavy metal complexes in wastewater.

Functionalization of hydrophobic nonwoven cotton fabric for oil and water repellency

Highly hydrophobic surfaces exhibit a remarkable feature in the repellency of oil and water. However, the relatively complex preparation process, high costs, and harmful compounds have largely limited their applications. This research aim is to fabricate hydrophobic nonwoven fabrics with low-cost and nontoxic materials. Despite various wettable materials, nonwoven cotton fabric material bearing hydrophobic surfaces has been received significant attention. This is mainly owing to its easy handling, high flexibility, environment friendly, low cost, biodegradability, high efficiency, and easily scalable fabrication. In this study, a simple chemical modification method using hexadecyltrimethoxysilane (HDTMS) with ethanol which is a better method in comparison with other methods since it is an inexpensive, simple method, and offers an easy adjustment of chemical composition required for a surface to show hydrophobic behaviors. The wetting behavior of cotton samples was investigated by water contact angle measurement. The best result comes from 2 ml HDTMS with 40 ml ethanol at 60 °C. The result shows that the treated cotton fabrics exhibited excellent chemical stability and outstanding non-wettability with the WCA of 126 ± 2°. It also shows that standard oil and water repellency, which offers an opportunity to accelerate the large-scale production of hydrophobic textile materials for new industrial applications.Graphic abstract

Nanoscale Zerovalent Iron Immobilized on Functionalized Nonwoven Cotton Fabric for As(V) Adsorption

A functionalized nonwoven cotton fabric-Fe(0) (denoted as FNCF-ZVI) as a novel adsorbent material was synthesized in two main steps for water treatment of arsenate ions. Firstly, the Fe(III)-immobilized chelating fabric with iminodiacetic acid (IDA) functional groups was synthesized through an epoxy group–containing glycidyl methacrylate (GMA) grafted to the nonwoven cotton fabric (NCF) via plasma-initiated emulsion graft polymerization. Subsequently, the obtained Fe(III)-immobilized FCNF was followed by a reduction of Fe(III) into Fe(0) to obtain stabilized nanoscale zerovalent iron (ZVI) on the surface of FNCF. FNCF-ZVI was applied for arsenic(V) removal in batch experiments at different pH values (2.00–9.00) and concentrations ranging between 1 and 500 mg/L As(V). The FNCF-ZVI had a positive impact on the absorption of As(V) species under acidic conditions, and the highest adsorption was seen at a pH value of 3.00. The adsorption equilibrium of adsorbent was reached in 420 min with initial solution concentrations at 1 mg/L, 10 mg/L, and 50 mg/L, and the process better fitted to the nonlinear pseudo-second-order model than to the nonlinear pseudo-first-order model. The resulting FNCF-ZVI showed a high maximum adsorption capacity of 158.73 mg/g at 35 °C for As(V) adsorption, and the adsorption data fitted the Freundlich isotherm model. Regeneration studies displayed that after 3 times usage, the adsorption capacity can remain up to 86%. It has been observed that ZVI nanoparticles have superior adsorption capacity compared to Fe(III) under their optimum conditions.

Photothermal Fabrics for Efficient Oil-Spill Remediation via Solar-Driven Evaporation Combined with Adsorption.

Oil spill rapidly destroys aquatic system and threatens humans, requiring fast and efficient remedy for removal of oil. The conventional remedy employs water-floating oil adsorbents whose volume should be large enough to accommodate all oil ingredients. Here, we suggest a new concept for efficient oil-spill remediation, which combines solar-driven evaporation of light oil components and simultaneous adsorption of heavy oil components, namely, solar-driven evaporation of oil combined with adsorption (SEOA). To design photothermal oil absorbents for the efficient SEOA, we designed carbonaceous fabrics with high photothermal heating performance and oil-adsorption capacity by carbonizing nonwoven cotton fabrics. For three model organic solvents of octane, decane, and dodecane floating on water, the fabrics, respectively, accelerated the evaporation in factors of 2.0, 4.4, and 2.3 through photothermal heating under simulated sunlight condition. For the 1.18 mm thick crude oil floating on water, 70 and 77 wt % of crude oil were evaporated within 2 and 16 h, respectively, with the photothermal fabrics, whereas only 22 and 34 wt % was evaporated in the absence of the fabrics, indicating the dramatic enhancement of oil removal by solar-driven evaporation. The remaining heavy oil components were accommodated in the pores of the fabrics, removal of which showed an additional 18 wt % reduction; that is, a total 95 wt % of the crude oil was removed. The oil-treatment capacity is as high as 110 g g-1, which has never been achieved with conventional oil adsorbents to the best of our knowledge. We believe that our combinatorial SEOA approach potentially contributes to minimizing the environmental disaster through a fast and efficient oil-spill remediation.

Cotton nonwovens with unidirectional water-transport properties produced by atmospheric plasma deposition

Cotton based nonwovens with unidirectional water-transport through the thickness of the fabric were prepared using atmospheric plasma technology. In controlling the plasma deposition parameters, a thin layer of polymerized Hexamethyldisiloxane was locally deposited onto a cotton nonwoven fabric, so that only the treated surface was hydrophobic, while the untreated surface remained hydrophilic. The water contact angle, surface morphology and chemical composition of the fabric surfaces were characterized, and the unidirectional water-transport performance, vapor transmission rate, thermal stability and durability of the treated nonwovens were tested. It was found that a super-hydrophobic surface could be durably achieved on one side of the fabric while maintaining a completely wettable surface on the other. The resulting asymmetric wettability enables the nonwovens to exhibit unidirectional water liquid-transport, without negatively affecting vapor transmission and air permeability. Such differential moisture management properties in sustainable cotton nonwovens are highly desirable for applications in hygiene, infection control and medical device applications.Graphic abstract

Efficient removal of tetracycline in water by a novel chemical and biological coupled system with non-woven cotton fabric as carrier

As a novel wastewater treatment strategy, the intimate coupling of photocatalysis and biodegradation (ICPB) has been attracted attention, which is ascribed to its combination of the advantages of photocatalytic reactions and biological treatment. The selection of carriers is important since it affects the stability of the system and the removal efficiency of pollutants. In this study, a novel ICPB system was successfully constructed by loading photocatalytic materials (i.e., TiO2, N-TiO2, and Ag-TiO2) and microbes onto non-woven cotton fabric. The photocatalysts were characterized by scanning electron microscope-energy dispersive spectrometer (SEM-EDS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). This system exhibited good performance in degrading tetracycline (TC) in water. The results showed that Ag-TiO2-ICPB had the maximum removal efficiency of tetracycline (94.7%) in 5 h, which was 16.5% higher than the photocatalysis alone. After five cycles, 82.9% of tetracycline could be still degraded through Ag-TiO2-ICPB. SEM spectrum showed microbes on the material changed little before and after the reactions. This result implied the materials were stable, and then beneficial for degrading of pollutants continuously. The intermediates were detected through ultraperformance liquid chromatography-mass spectrometer (UPLC-MS) and the plausible degradation pathways were proposed. Electron paramagnetic resonance (EPR) analysis showed OH and O2− were the main reactive oxygen species for TC degradation. In conclusion, the ICPB system with non-woven cotton fabric as a carrier has certain application prospects for antibiotic-containing wastewater.

Salt-resistant carbon dots modified solar steam system enhanced by chemical advection

Salt deposition still remains a significant challenge due to the decreasing evaporation efficiency of solar desalination. Herein, we provide a salt-rejection model coupled with the experimental verification about the chemical diffusion or advection process for solar steam generation. The designed evaporating system established by in-situ polymerization (polypyrrole) of carbon dots modified MnO2 nanowires coated on non-woven cotton fabric decorated ultra-flexible and super hydrophilic polyurethane foam (30% wicking). The salt-rejection investigations reveal real-time chemical advection phenomena where hot brine flows from the top surface to underneath water through a salinity gradient with the aid of accumulated heat. The prototype demonstrates an excellent salt rejection ability within a minimum record time (2 g/100 min) or once soaked (2 g/60 s). The floatable solar-driven evaporator exhibits incredible flexibility (80%, compressive strain) along with an evaporation rate of 1.68 kg m−2 h−1, and photothermal conversion efficiency (∼96.4%, solar to vapor) from high-salinity brine (10 wt %) and wastewater containing heavy metal ions (30 wt%). The outdoor test revealed a yield of 13.60 kg m−2 in one sunny day that provides a potential solution to single-step drinking water supply from various resources of the sea, lakes, and mixtures of emulsified oil, bacterial pathogens, and industrial wastewater.

PANI/Graphene quantum dots/graphene co-coated compressed non-woven towel for wearable energy storage

Nowadays, the flexible electric-power sources such as supercapacitors (SCs) have attracted increasing attention. Graphene fibers, graphene film and graphene hydrogel have been widely applied as flexible electrode materials for SCs. However, it is still a big challenge to produce large-scale graphene based flexible electrodes. In this work, we novelly coated the reduced graphene oxide (rGO) nanosheets on the commercial compressed non-woven towel (CNWT), a super hydrophilic non-woven cotton fabric material, through a facile repeated “dyeing and drying” method. The rGO coated CNWT (G/CNWT) performed excellent flexibility, stability and reasonable conductivity. Purposefully, the OH-functionalized graphene quantum dots (OH-GQDs) were inserted between the graphene nanosheets and the OH-GQDs and rGO co-coated CNWT (GG/CNWT) displayed better electrochemical performance. Furthermore, homogenous polyaniline (PANI) nanoparticles were electrodeposited on the GG/CNWT (PGG/CNWT) for high areal capacitance (Ca) SCs. Finally, the electrochemical performances of G/CNWT, GG/CNWT and PGG/CNWT based electrodes were investigated and analyzed under a conventional three-electrode test. The Ca of PGG/CNWT reached to 195 m F cm−2 at 0.1 mA cm−2 and showed excellent electrochemical stabilities with a high capacity retention of 96.5 % after 6000 cycles at a current density of 5 mA cm-2. Our work showed that the super hydrophilic CNWT could be a newly flexible supporting substrate for fabricating the rGO-functionalized textile electrode. In addition, the current simple and easy to scale-up method for fabricating the PGG/CNWT electrode made it used in flexible and wearable electronics as well as other applications.

Solid-state photochromism of spironaphthoxazine loaded microcapsules with photo-patterning and thermo-regulating features

HypothesisOne of the biggest challenges in the field of photoresponsive spirooxazines is their fast reverse isomerization. Polar phase change materials beside spirooxazines not only stabilize their colored-form, but also induce thermo-regulating properties to the whole system. Moreover, encapsulation is a key route to protect them and provide safe application of photochromic materials in solid-state matrices. ExperimentsA solution of spironaphthoxazine in oleic acid was encapsulated through solvent evaporation technique and the obtained microcapsules were incorporated in a transparent polymeric coating and also non-woven cotton fabrics. A systematic study on the reverse isomerization rate of spironaphthoxazine, photo-patterning and thermo-regulating features of the microcapsules was performed. FindingsComprehensive analyses demonstrated successful encapsulation of oleic acid and spironaphthoxazine. Microcapsules showed reversible color changes upon UV–Vis irradiation below melting point of oleic acid and a 85% decrease in discoloration rate compared to those without oleic acid. They also exhibited excellent photoswitchability, making them suitable for anti-counterfeiting applications. Their thermo-regulating feature in cotton fabrics was studied by using of infrared camera and they represented energy saving potentiality. Optically monitoring of temperature around melting point of oleic acid is another feature of these microcapsules.

Optimized hydroentanglement processing parameters for nonwoven fabrics composed entirely of cotton fibers

A study was conducted on a commercial grade hydroentanglement system to assess the effects of jet strip configuration in terms of both orifice diameter (0.10 mm, 0.12 mm, and 0.14 mm) as well as the number of orifices per inch (40 and 50) on the properties of resultant nonwoven cotton fabrics at various hydroentanglement pressures (0, 5.0, 7.5, 10.0, 12.5, and 14.0 MPa). It was found that an increase in the energy applied to the fabric web resulted in a nonwoven with increased absorbency. The results of air permeability testing indicate that a combination of variations in the orifice diameter and the number of orifices per inch as well as the energy applied determine the overall air permeability of the fabric. Tensile testing revealed that increasing the energy applied to the fabric resulted in increased strength in both the machine and cross directions and decreased elongations. These results indicate that the mechanical and performance characteristics of nonwoven cotton fabrics produced by hydroentanglement may be manipulated to obtain the desired characteristics for the targeted end-use application.

Template-Assisted Magnetron Sputtering of Cotton Nonwovens for Wound Healing Application.

In the present study, three kinds of functional wound dressings (Zn@Cotton, Ag@Cotton, and Ag/Zn@Cotton) were developed by template-assisted magnetron sputtering of cotton nonwovens. Scanning electron microscopy and energy dispersive spectrometry revealed a very thin, uniform silver oxides and zinc coating on the cotton cellulose microfibers, which was further confirmed by X-ray diffraction pattern, X-ray photoelectron spectrometry, and thermal gravimetric analysis. The physical characteristics such as high swelling ability, moderate air and water vapor permeabilities, good mechanical properties, and excellent flexibility support the suitability of magnetron sputtering cotton nonwovens for wound dressing applications. Moreover, the Ag/Zn@Cotton showed effective antibacterial activities against Escherichia coli and Staphylococcus aureus, which was mainly attributed to the synergistic effect of electrical stimulation and continuous release of Ag+/Zn2+. Meanwhile, benefiting from the low metal coating area percentage (17.54%), the Ag/Zn@Cotton exhibited good cytocompatibility. The in vitro and in vivo test show that Ag/Zn@Cotton can remarkably accelerate the wound healing process, which can be attributed to the enhanced cellular migration by electrical stimulation, strong antibacterial activity, good cytocompatibility, and excellent physical properties. Potentially, template-assisted magnetron sputtering may provide a simple, green, and sustainable alternative for the development of functional wound dressings.

Superhydrophobic cotton nonwoven fabrics through atmospheric plasma treatment for applications in self-cleaning and oil–water separation

In this study, a superhydrophobic cotton nonwoven fabric for oil–water separation was prepared by graft polymerization of siloxane under atmospheric pressure plasma in the medium of Air, N2 or O2. The effects of different process conditions on the contact angle, surface morphology, stability of the hydrophobic coating and the growth of nano-particles were investigated. This modified cotton nonwoven was tested for self-cleaning and oil–water separation efficiency. The surface characteristics of the prepared cotton nonwoven were systematically analyzed using scanning electron microscopy, Energy Dispersive X-ray Spectroscopy, and Fourier transform infrared spectroscopy. The water contact angle of treated nonwoven was up to 155°, and the precursor and jet movement speed have great influences on the surface morphologies and stability of the coating. Separation efficiency for oil–water mixture is higher than 97% and can be repeated for at least 10 times. Moreover, the superhydrophobic nonwoven treatment showed excellent stability toward strong acid and alkaline conditions, the resulting fabrics may be used under harsh environmental conditions.

Application of Aloe vera microcapsules in cotton nonwovens to obtain biofunctional textiles

The microencapsulation of essential oils and its application in textile articles allows the aggregation of different functionalities to the substrates, imparting them antimicrobial properties, cosmetic effects, UV protection, application of drugs, among others. Therefore, the coacervation technique allows good results using starch to prepare the microcapsules. The objective of this work was the microencapsulation of Aloe Vera with cornstarch using the simple coacervation technique in cotton nonwoven fabric using butane tetracarboxylic acid (BTCA) as a binding agent. Optical and Scanning electron microscopy were performed to understand the morphology of the microcapsules obtained; thermogravimetry, to the comprehension of the thermal degradation of the microcapsules; mass gain percentage; FTIR was used to prove the interaction between nonwoven and microcapsule and finally, the CIE WI white index. The micrography allowed the observation of granular morphology, predominantly angular. The thermogravimetric curves have shown two significative thermal events: dehydration of the oil and degradation of the starch. The samples presented darker coloration; however, their quality was not compromised by the finishing. For this reason, the characterizations allowed to infer that the simple coacervation using this method is a simple process, with good results for the encapsulation of essential oils.