| 增塑剂对聚乳酸/热塑性淀粉共混物结构与性能的影响 |
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| 引用本文： | 张清松,邓晶晶,贺湘伟,吴智华. 增塑剂对聚乳酸/热塑性淀粉共混物结构与性能的影响[J]. 塑料工业, 2009, 37(11) |
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| 作者姓名： | 张清松 邓晶晶 贺湘伟 吴智华 |
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| 作者单位： | 四川大学高分子科学与工程学院,四川,成都,610065 |
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| 摘 要： | 采用柠檬酸三丁酯(TBC)、聚乙二醇(PEG)增塑聚乳酸(PLA)/热塑性淀粉(TPS)共混体系,调节PLA的流变性能,改善PLA与TPS相容性、熔融共混特性和共混物的微观结构和力学性能.结果表明:TBC的改性效果比PEG更佳;TBC能增加TPS分散均匀性,相分散尺寸明显变小;TBC改性PLA/TPS的拉伸强度和断裂伸长率明显提高.吸水率较小.
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| 关 键 词： | 聚乳酸 热翅性淀粉 增塑剂 柠檬酸三丁酯 聚乙二醇 结构 性能 |
Effect of Plasticizers on Structure and Property of Polylactic Acid/Thermoplastic Starch Blends |
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| Abstract: | Two plasticizers, tributyl citrate(TBC)and polyethylene glycol(PEG), were employed to plasticize poly(lactic acid)(PLA)blend/thermoplastic starch(TPS), regulated the rheological properties, improved the compatibility of PLA and TPS, melt blending properties, microstructure and mechanical proper-ties. The results indicated that:the modification effectiveness of TBC was remarkabler than that of PEG;TBC could increase better TBC dispersion, and the disperse size phase became smaller; The tensile strengthand the elongation at break of the PLA/TPS blend modified by TBC improved obviously, but the water absorp-tion was smaller. |
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| Keywords: | Poly(lactic acid) Thermoplastic Starch Plasticizer Tributyl Citrate Polyethylene Glycol Structure Property |
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