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首页> 外文期刊>Journal of Polymers and the Environment >The Influence of Artificial Photodegradation on Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV)/ Graphite Nanosheets (GNS) Nanocomposites
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The Influence of Artificial Photodegradation on Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV)/ Graphite Nanosheets (GNS) Nanocomposites

机译：人工光降解对聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHBV）/石墨纳米片（GNS）纳米复合材料性能的影响

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摘要

The potential use of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/graphite nanosheets (GNS) as a biodegradable nanocomposite has been explored. PHBV/GNS nanocomposites films were prepared by solution casting at various concentrations of GNS-0.25, 0.50 and 1.00 wt% GNS. The films were exposed to artificial ultraviolet radiation (UV) during 52 h. The effect of GNS on PHBV photodegradation was investigated and compared to neat PHBV film. The artificial photodegradation induced changes in physical (weight loss), chemical carbonyl index by Fourier transform infrared spectroscopy, thermal degree of crystallinity and melting temperature by differential scanning calorimetry and morphological scanning electron microscopy characteristics. Based on the results obtained from aforementioned analyzes it was verified that GNS inhibits the oxidative degradation of PHBV matrix.
机译：研究了聚（3-羟基丁酸酯-co-3-羟基戊酸酯）/石墨纳米片（GNS）作为可生物降解的纳米复合材料的潜在用途。通过以各种浓度的GNS-0.25、0.50和1.00 wt％GNS溶液浇铸制备PHBV / GNS纳米复合膜。薄膜在52小时内暴露于人造紫外线（UV）。研究了GNS对PHBV光降解的影响，并与纯PHBV膜进行了比较。人工光降解通过傅立叶变换红外光谱法引起的物理（重量损失），化学羰基指数变化，差示扫描量热法和形态扫描电子显微镜特征引起了结晶度的热度和熔融温度的变化。基于从上述分析获得的结果，证实了GNS抑制了PHBV基质的氧化降解。

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