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首页> 外文期刊>Journal of Applied Polymer Science >Antibacterial activity and antistatic composites of polyester/Ag-SiO _2 prepared by a sol-gel method
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Antibacterial activity and antistatic composites of polyester/Ag-SiO _2 prepared by a sol-gel method

机译：溶胶-凝胶法制备的聚酯/ Ag-SiO _2抗菌活性及抗静电复合材料

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摘要

Poly(butylene adipate-co-terephthalate) (PBAT) composites containing silver-silica (Ag-SiO_2) were prepared using an in-situ sol-gel process. Maleic anhydride-grafted PBAT (PBAT-g-MA) and multihydroxyl- functionalized Ag-SiO_2 were used to improve the compatibility and dispersibility of Ag-SiO_2 within the PBAT matrix. The composites were characterized morphologically using transmission electron microscopy and chemically using Fourier transform infrared spectrometry. The existence of Ag-SiO_2 nanoparticles on the substrate was confirmed by the ultraviolet-visible absorption spectra. The antibacterial and antistatic properties of the composites were evaluated whether SiO_2 enhanced the electrical conductivity was tested as well as whether Ag enhanced the antibacterial activity of the PBAT-g-MA/SiO_2 or PBAT/SiO_2 composites. The PBAT-g-MA/SiO_2 or PBAT/SiO_2 composite that contained Ag had better antibacterial activity (more than 1.3-fold). The functionalized PBAT-g-MA/Ag-SiO_2 composite can markedly enhanced antibacterial and antistatic properties due to the carboxyl groups of maleic anhydride, which acted as coordination sites for the Ag-SiO_2 phase, allowing the formation of stronger chemical bonds.
机译：采用原位溶胶-凝胶法制备了含银-二氧化硅（Ag-SiO_2）的聚己二酸丁二醇酯-对苯二甲酸对苯二甲酸酯（PBAT）复合材料。马来酸酐接枝的PBAT（PBAT-g-MA）和多羟基官能化的Ag-SiO_2被用来改善Ag-SiO_2在PBAT基质中的相容性和分散性。使用透射电子显微镜对复合材料进行形态表征，并使用傅里叶变换红外光谱法对复合材料进行化学表征。紫外可见吸收光谱证实了Ag-SiO_2纳米粒子在基底上的存在。评价了复合材料的抗菌和抗静电性能，测试了SiO_2是否增强了电导率，以及Ag是否增强了PBAT-g-MA / SiO_2或PBAT / SiO_2复合材料的抗菌活性。含有Ag的PBAT-g-MA / SiO_2或PBAT / SiO_2复合材料具有更好的抗菌活性（大于1.3倍）。功能化的PBAT-g-MA / Ag-SiO_2复合材料由于马来酸酐的羧基（作为Ag-SiO_2相的配位部位），可以显着增强抗菌和抗静电性能，从而形成更强的化学键。

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