| PGS-PLA共混材料的制备和性能 |
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| 引用本文： | 桂宗彦,陆冲,李勇锋,程树军.PGS-PLA共混材料的制备和性能[J].华东理工大学学报(自然科学版),2009,35(1). |
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| 作者姓名： | 桂宗彦 陆冲 李勇锋 程树军 |
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| 作者单位： | 华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237 |
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| 摘 要： | 以聚癸二酸甘油酯(PGS)和聚乳酸(PLA)为原料在Haake转矩流变仪中密炼制备了不同配比的PGS-PLA共混材料。研究了共混材料的转矩流变性能、热性能、力学性能及其共混形态。结果表明PGS-PLA共混材料的转矩流变过程与PLA有很大差异,其熔融塑化过程大幅延长。DSC分析表明:随着PGS含量的增加,PGS-PLA共混材料的玻璃化温度、结晶温度和熔融温度降低,而结晶度提高;共混材料的冲击强度最大可以达到65.6 J/m,较纯PLA提高了447%;SEM观测表明PGS和PLA是分相的,且随PGS含量的提高,PGS分散相尺寸变大,混合效果变差。
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| 关 键 词： | poly（glycerol sebacate） poly（lactic acid） blending modification |
Preparation and Characterization of PGS-PLA Blend Composite |
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| GUI Zong-yan,LU Chong,LI Yong-feng,CHENG Shu-jun.Preparation and Characterization of PGS-PLA Blend Composite[J].Journal of East China University of Science and Technology,2009,35(1). |
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| Authors: | GUI Zong-yan LU Chong LI Yong-feng CHENG Shu-jun |
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| Institution: | Key Laboratory for Ultrafine Materials of Ministry of Education;School of Materials Science and Engineering;East China University of Science and Technology;Shanghai 200237;China |
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| Abstract: | Poly(glycerol sebacate)(PGS) and poly(lactic acid)(PLA) were blended at different compositions in a Haake internal mixer.The torque rheological properties,thermal properties,mechanical properties and morphologies of PGS-PLA blends were studied.The torque rheological processes of the blends were different from neat PLA,which had a long low-torque process between the feading peak and the fusion peak of PLA.Differential scanning calorimetry(DSC) results show the glass transition temperature,crystalline tempera... |
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