摘要
<正>为了改善PLA的流动性和加工性能,PLA与相同质量分数(10%)不同分子量的PEG熔融共混(200,800,2000,4000。分别称为:PEG200,PEG800,PEG2000,PEG4000)。研究了PLA及其共混物的热性能,力学性能和流变性能。结果表明:随着PEG分子量的增大,材料的玻璃化转变温度,冷结晶温度依次降低,材料的分子链有更多的活动余地。热重曲线表明随着PEG分子量的增加,分解温度降低,热稳定性下降。纳米力学性能表明随着PEG
引文
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