Mechanical Properties Of Nanocomposites Research Articles

Mechanical and fracture behaviour of pristine and defective single/bi-crystal graphene/Ti nanocomposites using molecular dynamics simulations

Metal matrix nanocomposites (MMNCs) are emerging as lightweight but strong propositions with high specific strength and elastic modulus for specific design applications. In the present paper, single-crystal (GrNSs) and bi-crystalline graphene nanosheets (5|7GrNSs) were reinforced into titanium (Ti) matrices to investigate the mechanical and fracture characteristics of Ti-based MMNCs i.e. TiGrNCs and 5|7TiGrNCs, using molecular dynamics (MD). Based on our findings it can be observed that the use of GrNSs helps improve the strength of Ti in a significant manner. The results further demonstrate that the presence of grain boundaries (GBs) did not exert a significant impact on the mechanical properties of nanocomposites (NCs). Moreover, the presence of vacancies and grain boundaries did not deteriorate the mechanical properties of NCs in a deleterious manner. These outcomes will help in the development of NCs that are both lightweight and structurally stronger for the automotive, marine, and aerospace industries.

The Influence of Carbon Nanotubes on the Physical and Chemical Properties of Nanocomposites Based on Unsaturated Polyester Resin

The new actual scientific direction is in the development of different nanocomposites and the study of their medical–biological, physicochemical, and physicomechanical properties. One way to expand the functionality of nanocomposites and nanomaterials is to introduce carbon nanostructures into the polymer matrix. This study presents the properties of unsaturated polyester resins (Estromal, LERG S.A.) based on PET recyclate with multi-walled carbon nanotubes (MWCNTs): their mechanical and thermomechanical characteristics, resistance to ultraviolet radiation (UV-vis), and chemical resistance properties. The properties of the obtained materials were characterized using physical–chemical research methods. The changes in the properties of the composites for MWCNT content of 0.1, 0.3, and 0.5 wt % were determined. The results showed positive influences on the thermomechanical and mechanical properties of nanocomposites without significant deterioration of their gloss. Too much CNT added to the resin leads to heterogeneity of the composite structure.

Investigation of nanocomposite system with long-chain phosphorus-containing intercalator-modified montmorillonite nanosheets

The biodegradable polyester polybutylene adipate-co-terephthalate (PBAT) is a synthetic material that can melt and ignite easily when exposed to fire. Herein, we synthesized a long-chain phosphorus-containing intercalator by grafting 9,10-dihydro-9-oxa-10-phos-phaphenanthrene10-oxide (DOPO) onto long-chain quaternary ammonium salts (BHMDAC). Then inserted it into the sodium-based montmorillonite (MMT) nanosheets at the ratio of 25.9 wt% to obtain organic modified nanosheets. Subsequently, they were mixed into the PBAT matrix, and a series of performance such as microscopic dispersion, thermal stability, flame retardancy, mechanism and mechanical properties of nanocomposite were investigated. Compared with PBAT (1138.42 kW/m2), PBAT/MMT-(DOPO-BHMDAC) 5 wt% exhibited the lowest peak heat release rate value (508.04 kW/m2), which was reduced by 55.37 %. After adding 1 wt% MMT/DOPO-BHMDAC, the tensile strength of the sample increased from 25.1 MPa to 32.0 MPa, and the elongation at break increased to 826 %. This work provides a new perspective for future research on high-performance degradable polyester materials.

The Effect of Hybrid B4C and Si3N4 Nanoparticles on the Mechanical and Physical Properties of Copper Nanocomposites

This study investigated the effects of reinforcing pure copper with hybrid B4C and Si3N4 nanoparticles on the mechanical and physical properties of the nanocomposite matrix. The composite matrix was prepared using the powder metallurgy (PM) method, allowing uniform nanoparticle dispersion within the copper matrix. The PM method was a practical approach for achieving a homogeneous and good dispersion of the reinforcing particles in the matrix while controlling the porosity and improving the microstructure of the fabricated composite matrix. The addition of B4C and Si3N4 are both very hard and dense materials. When added to a material, they can fill voids and reduce porosity. This can lead to significant improvements in the material’s mechanical properties. The study found that adding hybrid B4C and Si3N4 nanoparticles enhanced the microhardness and mechanical properties of the nanocomposites. The improvements in the mechanical and physical properties of such composites containing 5% B4C were 21.6% and 18.4% higher than the copper base alloy. The findings suggest that including ceramic particles is a viable strategy for enhancing the mechanical characteristics of copper in its pure form. For example, adding 5% B4C particles to copper resulted in a 23% increase in Young’s modulus of the material while reducing electrical conductivity by 4.6%. On the other hand, the hybrid composite Cu/5%B4C + 2.5%Si3N4 showed a 32% improvement in Young’s modulus and 71% in the microhardness value compared to the base metal. This makes it a promising option for various engineering applications, such as high-performance electrical contacts and bearings.

Application of Vietnamese Nano Graphene as SBR Rubber Reinforcement for Abrasion Resistance Conveyors

Graphene has been extensively considered as an ideal additive to improve the mechanical properties of many composite materials, including rubbers, because of its novel strength, high surface area, and remarkable thermal and electron conductivity. Styrene Butadiene Rubber (SBR) is considered a good material for abrasion resistance conveyors in industries. However, the mechanical properties of SBR still need to be improved. This study shows the enhancement of Vietnamese nano graphene (GNPs) on mechanical properties of SBR rubber such as tensile strength, tear strength, abrasion resistance, and adhesion strength. The distribution of the Dioctyl Phthalate (DOP)-modified GNPs in the SBR matrix was investigated using scanning electron spectroscopy. Results show a significant increase in SBR/GNPs nanocomposite mechanical properties with the presence of GNPs (tensile strength, and tear strength increased by 29.67% and 31.89% respectively in comparison with SBR rubber without GNPs, and abrasion weight loss was decreased by 30.84% in comparison with SBR and adhesion strength with polyester fabric was 3 times higher than that of SBR). The evaluation of GNPs content in SBR/GNPs nanocomposite material was carried out. Results show that 0.5 phr of GNPs content in SBR/GNPs nanocomposite material was the optimal GNPs content with good mechanical properties, high abrasion resistance, and good adhesion with polyester fabric.

Effects of Orientation and Dispersion on Electrical Conductivity and Mechanical Properties of Carbon Nanotube/Polypropylene Composite.

The orientation and dispersion of nanoparticles can greatly influence the conductivity and mechanical properties of nanocomposites. In this study, the Polypropylene/ Carbon Nanotubes (PP/CNTs) nanocomposites were produced using three different molding methods, i.e., compression molding (CM), conventional injection molding (IM), and interval injection molding (IntM). Various CNTs content and shear conditions give CNTs different dispersion and orientation states. Then, three electrical percolation thresholds (4 wt.% CM, 6 wt.% IM, and 9 wt.% IntM) were obtained by various CNTs dispersion and orientations. Agglomerate dispersion (Adis), agglomerate orientation (Aori), and molecular orientation (Mori) are used to quantify the CNTs dispersion and orientation degree. IntM uses high shear to break the agglomerates and promote the Aori, Mori, and Adis. Large Aori and Mori can create a path along the flow direction, which lead to an electrical anisotropy of nearly six orders of magnitude in the flow and transverse direction. On the other hand, when CM and IM samples already build the conductive network, IntM can triple the Adis and destroy the network. Moreover, mechanical properties are also been discussed, such as the increase in tensile strength with Aori and Mori but showing independence with Adis. This paper proves that the high dispersion of CNTs agglomerate goes against forming a conductivity network. At the same time, the increased orientation of CNTs causes the electric current to flow only in the orientation direction. It helps to prepare PP/CNTs nanocomposites on demand by understanding the influence of CNTs dispersion and orientation on mechanical and electrical properties.

Enriching the microstructure of AZ91D alloy by nano MoO3 composites

In the present study, a vacuum-assisted stir-casting process was made to synthesize nano-molybdenum trioxide-strengthened magnesium alloy composites of varying weight proportions. Morphological analysis was used to study the uniform distribution of ceramic reinforcing particles in the synthesized magnesium nanocomposites. ASTM standards were used to examine the mechanical properties of the intermixture. It was observed that the nano-MoO3 ceramics were uniformly distributed within the matrix alloy, no residual porosity was observed, and the grain size of the intermixture was observed as 59.82 + /0.001 nm and due to enhanced grain refinement and interfacial reaction between the intermixtures, the mechanical properties of nanocomposites, such as tensile, compression, flexural and impact strengths, significantly increased over the as-cast magnesium alloy. The corrosion resistance was improved due to the reduced size of the Mg17Al12 phase and the more uniform dissemination of ceramic strengthening particulates. Further, the improved load-bearing capacity and transfer layer enriched the wear resistance of magnesium alloy nanocomposites for all weight proportions.

Compatibilization of Immiscible PA6/PLA Nanocomposites Using Graphene Oxide and PTW Compatibilizer for High Thermal and Mechanical Applications

The aim of this work is synthesis a novel nanocomposite containing Polylactide (PLA) and polyamide 6 (PA6) reinforced with graphene oxide (GO) and poly ethylene-butyl acrylate-glycidyl methacrylate) (PTW) compatibilizer during solvent-based method. For this purpose, GO was added to the nanocomposite with 0.1, 0.3, 0.5, 0.7 and 1 phr. Morphology, rheology and mechanical properties of nanocomposites were studied with scanning electron microscopy (SEM), transmission electron microscopy (TEM) and (DMTA) which showed rougher fracture surface due to the presence of compatibilizer and an increase in the amount of graphene oxide and better dispersion of graphene oxide. The results of experimental and theoretical studies of mechanical properties showed that increasing the concentration of graphene oxide in the presence of PTW improved the tensile strength, impact strength and tensile modulus in the PA6/PTW/PLA system. The study of rheological properties showed an increase in storage modulus and complex viscosity, which also confirmed the role of PTW compatibilizer in better GO dispersion. So, PA6/PTW/PLA is a good candidate for mechanical and high thermal applications.

Mechanical and Thermophysical Properties of Epoxy Nanocomposites with Titanium Dioxide Nanoparticles

The introduction of nanoparticles and their homogeneous distribution in the polymer matrix, as well as their size, can have a significant effect on the mechanical properties of composite materials. In this work, we studied the mechanical characteristics of TiO2/epoxy nanocomposites with different contents and sizes of nanoparticles. The preparation of nanocomposites was carried out by a stepwise curing (at 90 and 160 °C) of ED-20 dianic epoxy resin in the presence of an aromatic hardener with the addition of titanium (IV) dioxide nanoparticles preliminarily synthesized by the plasma-chemical method. Ultrasonic dispersion was used to achieve a uniform distribution of nanoparticles in the polymer matrix. The chemical and phase composition, the structure of the as-synthesized TiO2 nanoparticles, and the resulting epoxy nanocomposites were characterized by elemental analysis, X-ray diffraction, transmission and scanning electron microscopy, and infrared spectroscopy. The mechanical properties of the nanocomposites were determined by the static tensile test, and the impact toughness was determined by the Charpy method. The glass transition temperature and thermal stability of the TiO2/epoxy nanocomposites were studied by thermal analysis methods. The formation of an interfacial layer between the TiO2 nanoparticles and an epoxy matrix has been shown for the first time by spectral methods. It is shown that the mode of curing and ultrasonic dispersion used, as well as varying the content and dispersity of the TiO2 nanoparticles, make it possible to obtain epoxy nanocomposites with simultaneously improved deformation-strength characteristics and impact strength values.

ZnS nanoparticles-tailored electric, magnetic and mechanical properties of nanocomposites

Zinc sulfide nanoparticles are embedded in unsaturated polyester resins (UPR) to form nanocomposites through the hand layup method. It is observed that dielectric, magnetic and mechanical properties improved due to strong interaction between ZnS nanofillers and UPR matrix. The amorphous nature of prepared nanocomposites confirmed by x-ray diffraction. SEM images revealed that UPR based nanocomposites exhibited well dispersion of ZnS nanoparticles. ZnS nanofillers (2.5 wt % concentration) exhibited significant/improved values of dielectric constant 309, ac conductivity 2.71 × 10−4S/cm, coercivity 259Oe, magnetic saturation 0.117 emu/g, and magnetic remanence 2.9 × 10−3emu/g. Whereas, good tensile strength 6.56 MPa and Young's modulus 99.7 MPa is observed at 2 wt % concentration of ZnS nanofillers. This work suggests that the prepared semiconducting ZnS nanofillers in the UPR matrix has potential as an electro-magnetic material with remarkable properties.

Effect of milling time on microstructural and mechanical properties of nano-Al2O3P/6061Al composites prepared by transient liquid-phase sintering

In this study, 5 vol% Al2O3 nanoparticles reinforced 6061 Al matrix nanocomposite was prepared by mechanical alloying the corresponding powders followed by hot-pressing. The effect of the milling time on the morphology of powder as well as the microstructure and mechanical properties of resulting nanocomposites was studied. The result shows that the effect of the milling time on the mechanical properties of nanocomposites comes from its effect on the distribution of Al2O3 nanoparticles in Al matrix. The long milling time is required to uniformly disperse Al2O3 nanoparticles within Al grains, in order to obtain good mechanical properties. The nanocomposite made from the powder milled for 50 h exhibits a tensile strength of 602 MPa and an elongation to failure of 8.8%, which are higher than those ever reported for the similar materials. The higher mechanical properties are mainly attributed to Orowan strengthening, grain boundary strengthening, and high dislocation density.

Nanocomposite fabrics with high content of boron nitride nanotubes for tough and multifunctional composites

Herein, we apply a one-step filtration method to obtain boron nitride nanotube (BNNT)-based fabrics incorporating high content of BNNTs and an adhesive thermoplastic polyurethane (TPU). The adsorption behavior of TPU on BNNTs of different qualities and on functionalized BNNTs was evaluated in a two-solvent system and contrasted with carbon nanotubes, pointing to differences in surface interaction. BNNT quality affected not only the nanocomposite mechanical properties but also the trends as a function of increasing TPU content and the adhesion to substrates. Samples containing higher quality BNNT materials showed up to 12-fold improvement in Young’s modulus, while functionalization improved the tensile toughness. Thermal conductivity varied between 1.5 and 3 W m−1 K−1 depending primarily on the BNNT content and without a pronounced effect from the quality of BNNTs. The BNNT-TPU fabric offers a promising format to exploit BNNTs within tough, electrically insulating, thermally conductive materials for heat dissipation within packaging or adhesive materials in electronics.Graphical abstract

Effect of adsorption, hardener, and temperature on mechanical properties of epoxy nanocomposites with functionalized graphene: A molecular dynamics study

Investigating Epoxy/hardener ratio and adsorption rate in epoxy/graphene oxide nanocomposites is of great importance, since these values can affect on the mechanical properties of the nanocomposite. In this study, molecular dynamics simulation was used to investigate and compare the mechanical properties of epoxy/graphene and graphene oxide nanocomposites (EPON 828, EPON 862, Epoxy Novolac, and Cycloaliphatic Epoxy with GNs and GO). Also, the effect of different weight percentages of graphene oxide (0,1,3 and 5 wt %), different weight percentages of epoxy compared to hardener, adsorption rate, and different temperatures were studied. The results showed that increasing the weight percentage of graphene oxide in epoxy matrices improved the adsorption rate between Epoxy/GO and the strength of nanocomposites. In addition, the amount of Young's modulus slightly decreased with increasing the temperature. Besides, the highest amount of Young modulus was obtained by increasing the weight percentage of epoxy to hardener at 63:37 wt %. Moreover, by comparing the mechanical properties of epoxy nanocomposites at 5 wt % graphene oxide, the highest Young modulus were found to be related to Novolac/GO 4.27 Gpa and EPON 862/GO 4.24 Gpa. This study contributes to a more comprehensive understanding on the behavior of the mechanical properties of epoxy/graphene oxide nanocomposites.

Waterborne polyurethane/silica nanocomposites based on electrostatic interaction: Interfacial interactions and properties

To study the effect of electrostatic interaction on the interface and mechanical properties of nano-composites, two kinds of silica nanoparticles with positive and negative charges were prepared and introduced into waterborne polyurethane (WPU) emulsion with negative charges to prepare composite emulsion and film. Molecular dynamics simulation and instrumental characterization were used to investigate the properties of nanoparticles and hybrid films. Molecular dynamics simulation results showed that WPU/SiO2(+) nanocomposite demonstrated higher interfacial free energy, lower free volume fraction and diffusion coefficient than those of WPU/SiO2(−) nanocomposite. The mechanical properties of the composite films indicated that there is no positive effect on the mechanical properties as the charges of SiO2 and WPU keep the same. Therefore, the mechanical properties of the composite films can be effectively enhanced by introducing positively charged SiO2, and the optimized introduction amount is 1 %. SEM images of the cross-section for the film show that SiO2(+) exhibits higher interfacial interaction strength with the WPU matrix than SiO2(−). Accordingly, molecular dynamics simulation and instrumental analysis afford similar results.

The effect of branched carbon nanotubes as reinforcing nano-filler in polymer nanocomposites

This work discusses the mechanical and dissipative properties of nanocomposite materials made of a high-performance thermoplastic polymer (polybutylene terephthalate, PBT) integrated with branched carbon nanotubes (bCNTs) as nanofiller. The storage and loss moduli as well as the loss factor/damping ratio of the nanocomposites are experimentally characterized for increasing bCNT weight fractions (wt% bCNT) upon variations of the input cyclic strain amplitude and of the input frequency, respectively. The trends obtained for the nanocomposites mechanical properties indicate improvements both in storage and loss modulus by increasing the bCNT weight fraction from 0.5% to 2%. The striking differences between the damping capacities exhibited by CNT/polymer and bCNT/polymer nanocomposites are discussed to shed light onto the different underlined mechanics of the nanocomposites. Due to the stick–slip relative sliding motion of the polymer chains with respect to the straight CNTs, CNT/PBT nanocomposites are known to exhibit a peak in the damping vs. strain amplitude curves, past which, the damping capacity shows a monotonically increasing trend due to the conjectured sliding of the polymer crystals. On the other hand, we show for the first time that bCNT/PBT nanocomposites do not exhibit a peak in the damping capacity but rather a plateau after an initial drop at low strains. This behavior is attributed to the much reduced mobility of the branched CNTs and the lack of formation of crystalline structures around the bCNTs.

Synergetic effects of graphene nanoplatelets/montmorillonite on their dispersion and mechanical properties of the epoxy‐based nanocomposite: Modeling and experiments

AbstractThe mechanical properties of nanocomposites are significantly affected by the dispersion of nanofillers. In this study, the synergetic effect of hybrid fillers, including surfacemodified montmorillonite (MMT) nanoclay and graphene nanoplatelets (GNPs) on the dispersion quality and mechanical characteristics of epoxy‐based nanocomposites was investigated. It was manifested that the incorporation of GNPs‐MMT hybrid into pure epoxy improves the dispersion of nanoplatelets and consequently, the tensile and flexural properties. The maximum tensile and flexural strength was obtained for the sample containing 0.15 wt% GNPs and 1 wt% MMT that was 19% and 17.4% higher than the neat epoxy, respectively. The experimental analyses were followed by Mori–Tanaka, Halpin–Tsai, and two‐parameter Weibull distribution methods to model the mechanical behavior of nanocomposites. The modeling and experimental results as well as the microscopic analysis revealed the variation of toughening mechanisms from micro to nano scale.

Mechanical behavior of interfacial stress transfer in platelet-reinforced thermoset polymeric composites

This study models the mechanical performance of thermoset polyamide filled with various percentages of glass beads using a coupling agent. A micromechanical model is developed for polyamide glass-bead composite containing three-phase zones with imperfect bonding across interfaces. The micromechanical/interface model uses square sub-region arrays representing particle, matrix, and interface zones to obtain the stress transfer behavior across the cohesive zone for a given microstructure. Understanding the stress transfer tool and interfacial adhesion across multi-coated inclusions, and developing accurate material models will help in establishing upcoming design criteria in the engineering of polymer based composites. The impact of this study comes from the fact that the diffusion quality and non-uniform distribution of inclusions within the polymer matrix, and weak bonding of filler to the polymer matrix, may result in an ineffective stress transfer, which in turn degrades the mechanical properties of nanocomposites. The influence of incomplete interfacial adhesion on the modulus and strength property of polymer-based composites has been investigated in this study. The coupling agent used had a minor impact on the stiffness of the composite which confirms the fact that stiffness is minimally affected by interfacial bonding. The model also revealed that the maximum obtainable stress decreases with increasing volume fraction of glass present in those composites with no coupling agent.

Synergistic effect of cellulose nanocrystals-graphene oxide as an effective nanofiller for enhancing properties of solventless polymer nanocomposites

The solution mixing approach-based cellulose nanocrystals (CNCs) decorated graphene oxide (GO) nanohybrids (CNC@GO) was prepared and their effect over on the solventless polymer (SLP) called waterborne epoxy system was analyzed. The as-prepared GO, CNC and CNC@GO were scrutinized by several characterization techniques such as X-ray diffraction (XRD), thermogravimetric analysis (TGA), Raman Analysis, Fourier transform infra-red (FT-IR), transmission electron microscopy (TEM) and field emission scanning electron microscope (FESEM) for identifying their quality. The GO-SLP, CNC-SLP and CNC@GO-SLP nanocomposites mechanical and thermal properties were analyzed in detail. The highest tensile strength was observed at the lowest loading content (0.2 wt %) of CNC@GO incorporated SLP nanocomposites, as compared with other (0.2 wt % of (GO-SLP and CNC-SLP)) nanocomposites. Also, the thermo-mechanical analysis of CNC@GO nanohybrids incorporated SLP system exposes a notable improvement in the tan delta and storage modulus values at lower nanofiller concentration (0.2 wt %). The successful decoration of CNC on the GO surface promotes to the uniform dispersion, strong hydrogen bonding and outstanding interaction between the introduced nanofillers within the SLP system which leads to the better results in the mechanical and thermal properties. Besides, it was observed that the numerical simulation responses were in good deal with the laboratory values for both ultimate stress and strain. Thus, the as-prepared nanohybrids could possibly enrich the mechanical and thermal properties of the SLP system.

Antimicrobial PMMA Bone Cement Containing Long Releasing Multi-Walled Carbon Nanotubes.

Prosthetic joint infections (PJIs) ensued from total joint replacement (TJR) pose a severe threat to patients that involve poor health outcomes, severe pain, death (in severe cases), and negative influence patients’ quality of life. Antibiotic-loaded bone cement (ALBC) is frequently used for the prevention and treatment of PJI. This work aims to study gentamicin release from carbon nanotubes (CNTs) incorporated in polymethyl methacrylate (PMMA) bone cement to prolong release over several weeks to provide prophylaxis from PJIs after surgery. Different CNT concentrations were tested with the presence of gentamicin as a powder or preloaded onto carboxyl functionalized CNTs. The different types of bone cement were tested for drug release, mechanical properties, water uptake, antimicrobial properties, and cytocompatibility with human osteoblast cells (MTT, LDH, alizarin red, and morphology). Results showed prolonged release of gentamicin from CNT-loaded bone cements over several weeks compared to gentamicin-containing bone cement. Additionally, the presence of CNT enhanced the percentage of gentamicin released without adversely affecting the nanocomposite mechanical and antimicrobial properties needed for performance. Cytotoxicity testing showed non-inferior performance of the CNT-containing bone cement to the equivalent powder containing cement. Therefore, the developed nanocomposites may serve as a novel PMMA bone cement to prevent PJIs.

Fabrication and characterization of biopolymers with antibacterial nanoparticles and Calendula officinalis flower extract as an active ingredient for modern hydrogel wound dressings

Hydrogels are three-dimensional networks that can absorb moisture up to several times their weight and have many medical and biological applications. In this paper, the fabrication and characterization of a three-component chitosan (CS) / sodium alginate (SA) / polyvinyl alcohol (PVA) hydrogel with various weight percentages (0, 5, 10, 15, and 20) wt% of Ag2O/SiO2 with Calendula officinalis flower extract as an active ingredient are fabricated as a novel and green wound dressing. After forming bio-nano composites utilizing the cross-linking technique, Fourier transform infrared (FT-IR) spectroscopy is applied to determine and prove the functional groups added to the CS/PVA/SA at the whole step. X-ray diffraction (XRD) analysis is performed to prove the crystalline and amorphous structure of Ag2O/SiO2 NPs. The field emission scanning electron microscope (FE-SEM) analyses and Energy-dispersive X-ray spectroscopy (EDS) are performed to confirm the morphology of the composition and check the elements to increase wound healing. Atomic force microscope (AFM) examination is done to prove and determine surface roughness and pores. The tensile test is performed to determine the tensile strength and mechanical properties of nanocomposites. Also, by immersing nanocomposites in the simulated body fluid (SBF) and phosphate buffer salt (PBS), the swelling ratio is determined, and the release of Calendula officinalis flower extract is measured in PBS. Finally, the synthesized hydrogel's water vapor transmission rate (WVRT) and then antibacterial tests are determined. This research proves that with the increase of Ag2O/SiO2 NPs to 20% wt., the biofilm's tensile strength and mechanical properties and all healing properties have improved significantly. Producing these films is very effective in improving skin infections. Finally, the thermogravimetric analysis (TGA) is applied to estimate the thermal stability of the biopolymer films with various percentages of mesoporous Ag2O/SiO2 nanoparticles.