摘要
以多元酸(PHA)为增容剂,采用双螺杆挤出机熔融共混制备聚乳酸(PLA)/聚(己二酸-co-对苯二甲酸丁二酯)(PBAT)复合材料,通过热失重分析仪、差示扫描量热仪、万能试验机、扫描电子显微镜(SEM)和旋转流变仪等方法研究了PHA对PLA/PBAT复合材料热性能、力学性能和相容性的影响。结果表明,加入适量的PHA可以提高PLA/PBAT复合材料的热稳定性和结晶度,当其质量分数为1.5%时,复合材料表现出较好的热稳定性和较大的结晶度;PHA能改善PLA/PBAT复合材料的缺口冲击强度;SEM断面形貌和流变性能测试结果表明PHA对于PLA/PBAT体系有较好的增容效应。
Polyhydric acid as a compatibilizer was introduced into polylactide （PLA）/poly （butylene adipate-co-terephthalate） （PBAT） composites by melt blending using a twin screw extruder. The effect of polyhydric acid on the thermal performance, mechanical properties and compatibility of PLA/PBAT composites were investigated by means of thermogravimetry analysis （ TGA）, differential scanning calorimetry （DSC）, universal testing machine, scanning electron microscopy （SEM） and rotary rheometer. It was found that, the thermostability and crystallinity could be increased by the addition of proper amount of polyhydric acid. When polyhydric acid of 1.5wt% was added, PLA/PBAT composit had better heat resistance and higher degree of crystallinity; the notch impact strength was improved with the introduction of PHA. SEMs and rheological property test showed that PHA had a good compatibilization effect on the PLA/ PBAT system.
出处
《塑料工业》
CAS
CSCD
北大核心
2015年第8期104-106,111,共4页
China Plastics Industry
