壳聚糖
纳米复合材料
食品包装
环境友好型
纳米颗粒
材料科学
抗菌活性
热的
纳米技术
复合材料
化学工程
化学
食品科学
生态学
遗传学
物理
气象学
细菌
工程类
生物
作者
H.M. Ragab,Nizam Diab,Sofian Obeidat,Abdulrahman A. Alghamdi,Azza Khaled,M. O. Farea,M.A. Morsi
标识
DOI:10.1016/j.ijbiomac.2024.130668
摘要
In this study, nanocomposite films were produced by blending polyvinyl alcohol (PVA) and chitosan (Cs) polymers with 70 % PVA and 30 % Cs, incorporating silver nanoparticles (Ag NPs) via a solution-casting method. The research aims to investigate the impact of the biosynthesized Ag NPs by Chenopodium murale leaf extract on optical, morphological, mechanical, thermal, electrical, and antibacterial properties. XRD analysis showed a decrease in crystallinity degree with Ag NPs addition. TEM revealed Ag NPs in cubic and spherical shapes with an average size of 23.4 nm. SEM and AFM indicated surface morphology changes. FT-IR spectra showed interaction between Ag ions and the blend. The energy gap decreased with increasing Ag NPs concentration. TGA exhibited enhanced thermal stability. Mechanical properties improved significantly. AC electrical conductivity and dielectric parameters were studied. Antibacterial activity against Gram-positive and Gram-negative bacteria was observed. Overall, PVA/Cs-Ag NPs films show promise for food packaging and optoelectronic applications.
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