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Anti-bacterial poly(vinyl alcohol) nanocomposite hydrogels reinforced with in situ synthesized silver nanoparticles

机译:用原位合成银纳米粒子加固抗菌聚(乙烯醇)纳米复合水凝胶

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This work describes fabrication and properties of anti-bacterial poly(vinyl alcohol)/silver nanoparticles (PVA/AgNPs) nanocomposite hydrogels prepared via cyclic freeze-thaw. The AgNPs, at different concentrations, were synthesized in situ in PVA solution, without employing either capping or reducing agent. Stable AgNPs with the average diameter of 16 nm uniformly dispersed in PVA was obtained. The presence of 2 wt% of AgNPs enhanced tensile strength and elongation at break by 40 and 31%, respectively due to extended network formation between AgNPs and PVA. AgNPs also provided the hydrogels with anti-bacterial capability, while did not change water uptake markedly. Furthermore, the electrical conductivity of 1.5 x 10(5) S cm(-1) was achieved by the addition of as low as 2 wt% of AgNPs. POLYM. COMPOS., 40:1322-1328, 2019. (c) 2018 Society of Plastics Engineers
机译:该工作描述了通过循环冷冻解冻制备的抗细菌聚(乙烯醇)/银纳米颗粒(PVA / AgNP)纳米复合水凝胶的制造和性质。 在不同浓度下,在PVA溶液中以不同浓度合成AgNP,不使用封端或还原剂。 得到稳定的AgNP,平均直径为16nm均匀分散在PVA中。 由于AgNP和PVA之间的延长网络形成,分别存在2wt%的AgNPs的抗拉伸强度和伸长率伸长率。 AGNP还提供了水凝胶,具有抗菌能力,同时没有显着改变水吸收。 此外,通过添加低至2wt%的AgNPS,实现了1.5×10(5)厘米(-1)的电导率。 聚合物。 Compos。,40:1322-1328,2019。(c)2018塑料工程师协会

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