Polymer-Nanoparticle Composites Composed of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Coated Silver Nanoparticles

文献类型： 外文期刊

第一作者： Min, Minghua

作者： Min, Minghua;Ma, Haiyou;Huang, Hongliang;Shi, Jiangao;Chen, Xiaoxue;Liu, Yongli;Wang, Lumin;Shi, Yuyuan

作者机构：

关键词： coated silver nanoparticles;dynamic crystallization;nanocomposite;poly (3-hydroxybutyrate-co-3-hydroxyvalerate);thermal stability

期刊名称：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS （ 影响因子：1.504； 五年影响因子：1.388 ）

ISSN： 0022-2348

年卷期： 2015 年 54 卷 4 期

页码：

收录情况： SCI

摘要： The effects of addition of synthesized organic-suspension silver nanoparticles on the crystallization and thermal stability of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were studied by transmission electron microscopy (TEM), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (XRD), UV-Vis absorption spectroscopy, polarized optical microscopy (POM), and thermal gravimetric analysis (TGA). The TEM images showed the average primary size of the as-synthesized silver nanoparticles, coated with a monolayer of the surfactants consisting of oleic acid and an alkylamine, was about 5 nm with narrow distribution, and that they were uniformly dispersed in n-heptane. PHBV/silver nanocomposites were prepared by melt mixing in an internal mixer and then injection molded into rectangle-shaped specimens by a labscale injection molding device. The coated silver nanoparticles showed a homogenuous dispersion in the PHBV matrix when the content of coated silver nanoparticles was about 1%. Both the DSC and POM data showed the efficient heterogeneous nucleation by the coated silver nanoparticles for facilitating PHBV crystallization. The thermal stability of the PHBV/silver nanocomposites improved with the increase in the content of the coated silver nanoparticles.

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