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热塑性乙酰化淀粉/聚乳酸的性能及形态

, PP. 55-59

Keywords: 聚乳酸,热塑性乙酰化淀粉,甘油,增塑剂,性能

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Abstract:

采用熔融共混的方法制备了热塑性乙酰化淀粉(TPAS)/聚乳酸(PLA)复合材料,研究了TPAS/PLA复合材料力学性能、热性能和形态结构。TPAS以乙酰化改性淀粉为基体,甘油为增塑剂。实验结果表明:随着TPAS含量的增加,TPAS/PLA复合材料韧性明显提高,当TPAS加入量为40%(质量分数)时,断裂伸长率提高4倍多,同时TPAS的加入对复合材料的热稳定性影响不大。DSC、DMTA和SEM分析结果表明,PLA与TPAS是不相容的。

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