| 添加剂对聚乳酸湿热降解性的影响 |
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| 引用本文： | 高战团,冯立栋,边新超,陈志明,陈学思,陈文启.添加剂对聚乳酸湿热降解性的影响[J].高分子材料科学与工程,2009(4). |
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| 作者姓名： | 高战团 冯立栋 边新超 陈志明 陈学思 陈文启 |
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| 作者单位： | 浙江海正生物材料股份有限公司;中国科学院长春应用化学研究所高分子物理与化学国家重点实验室; |
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| 基金项目： | 国家科技攻关计划(2005BA314C);;浙江省科技计划项目(2004C13020);;国家发改委(发改办高技2006(2352号)) |
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| 摘 要： | 文中研究了聚乳酸在日常使用温度、湿度条件下的降解行为。实验发现,聚乳酸热氧降解几乎可以忽略,主要的降解形式是吸湿后的水解。采用熔融共混添加剂的方法,加入憎水性添加剂二甲基硅油降低聚乳酸的吸湿性,加入碱性添加剂改变聚乳酸的pH值,都可以降低聚乳酸的湿热降解率。加入0.5%~1.5%硬脂酸钠效果最好,其中加入1.0%的聚乳酸树脂在60℃,70%相对湿度条件下24 h仅降解16.96%,而没有添加剂的树脂降解高达68.16%。
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| 关 键 词： | 聚丙交酯 降解 水解 添加剂 |
Influence of Additives on the Degradability of Poly-L-Lactide by Wetting and Heatting |
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| GAO Zhan-tuan,FENG Li-dong,BIAN Xin-chao,CHEN Zhi-ming,CHEN Xue-si,CHEN Wen-qi.Influence of Additives on the Degradability of Poly-L-Lactide by Wetting and Heatting[J].Polymer Materials Science & Engineering,2009(4). |
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| Authors: | GAO Zhan-tuan FENG Li-dong BIAN Xin-chao CHEN Zhi-ming CHEN Xue-si CHEN Wen-qi |
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| Affiliation: | 1.Zhejiang Hisun Biomaterials Co.;Ltd;Taizhou 318000;China;2.State Key Laboratory of Polymer Physics and Chemistry;Changchun Institute of Applied Chemistry;Chinese Academy of Sciences;Changchun 130021;China |
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| Abstract: | It is a difficult that plastics products of polylactide(PLA) is used in daily life,owing the PLA exhibits faster degradation.The degradation behaviors of PLA under the condition of normal temperature and humidity have been investigated in this paper.The experimental results show that the thermooxidative degradation of PLA may be omitted.The hydrolyzation of PLA in air is the main degradation form.In order to decrease the degradability of PLA by wetting and heatting,The hydrophobic additives,such as dimethyl... |
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| Keywords: | polylactide degradation hydrolyzation additive |
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