| 聚乳酸/羟丙基淀粉复合降解型材料的制备和表征 |
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| 引用本文： | 居学成,尹建伟,黄凌,翟茂林.聚乳酸/羟丙基淀粉复合降解型材料的制备和表征[J].塑料,2008,37(6). |
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| 作者姓名： | 居学成 尹建伟 黄凌 翟茂林 |
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| 作者单位： | 北京大学化学与分子工程学院,北京,100871;北京大学香港科技大学深圳研修院,广东,深圳,518057;北京大学香港科技大学深圳研修院,广东,深圳,518057;北京大学化学与分子工程学院,北京,100871 |
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| 基金项目： | 深圳市科技研发资金深港创新圈计划 |
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| 摘 要： | 羟丙基改性淀粉作为填充剂,在偶联剂作用下与聚乳酸共混、挤出制备聚乳酸/羟丙基淀粉复合降解型材料。随着羟丙基改性淀粉含量的增加,共混材料的硬度略有增加、拉伸强度和断裂伸长率都先减小后增大,材料的吸水率和降解速率增加,且改性淀粉取代度的增加有利于提高材料的韧性。
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| 关 键 词： | 聚乳酸 羟丙基淀粉 力学性能 吸水率 生物降解性 |
The Preparation and Characterization of Poly(lactic acid)/Hydroxypropyl Starch Degradable Blend |
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| JU Xue-cheng,YIN Jian-wei,HUANG Ling,ZHAI Mao-lin.The Preparation and Characterization of Poly(lactic acid)/Hydroxypropyl Starch Degradable Blend[J].Plastics,2008,37(6). |
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| Authors: | JU Xue-cheng YIN Jian-wei HUANG Ling ZHAI Mao-lin |
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| Abstract: | Hydroxypropyl starch(HPS),used as a filling agent,was blended with poly(lactic acid)(PLA) in the presence of coupling agent to prepare a new degradable composite.With the increasing of starch content,the hardness of the blend was slightly increased;but the tensile strength and the elongation at break of the blend were firstly reduced,then increased;the water absorption and degradation rate of the blend were increased.Furthermore,the increased degree of substitution of HPS could enhance the toughness of PLA/ HPS blends. |
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| Keywords: | poly(lactic acid) hydroxypropyl starch mechanical properties water absorption biodegradability |
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