摘要
以乙烯甲基丙烯酸缩水甘油酯共聚物(GEMA)为增容剂,采用熔融共混法制备了聚乳酸(PLA)/高密度聚乙烯(PE-HD)增容合金。以CO2为发泡剂进行釜压发泡,制备出PLA/PE-HD增容合金泡沫。结果表明,加入GEMA后,聚合物合金的结晶能力有所下降和流变性能略有提高;随着GEMA含量的增加,PE-HD分散相尺寸减小,数量增多,聚合物合金发泡样品的泡孔结构可以实现从复合泡孔到单一泡孔的转变。
The poly(lactic acid)(PLA)/high-density polyethylene (PE-HD) blends was prepared by a melt-mixing method with ethylene-glycidyl methacrylate copolymer (GEMA) as a compatibilizer, and then the blending foams were prepared in a stainless-steel autoclave with CO 2 as a foaming agent. With the addition of GEMA, the crystallinity of PLA/PE-HD blends decreased but their rheological properties increased slightly. On the other hand, the size of PE-HD dispersed phase decreased and its number increased due to an increase in the content of GEMA. There was a transition from a complex cellular structure to the mono-porous cell one observed in the blending foams.
作者
李杨
殷德贤
朱敏
周洪福
王向东
叶志殷
LI Yang;YIN Dexian;ZHU Min;ZHOU Hongfu;WANG Xiangdong;YE Zhiyin(School of Materials and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China;Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing 100048, China)
出处
《中国塑料》
CAS
CSCD
北大核心
2019年第9期50-56,共7页
China Plastics
基金
国家重点研发计划课题(2016YFB0302203)
2019年研究生科研能力提升计划项目资助
国家自然科学基金(51703004)
关键词
聚乳酸
高密度聚乙烯
合金
釜压发泡
增容
poly(lactic acid)
high-density polyethylene
blend
stainless-steel autoclave foaming
compatibilization
