摘要
采用高氯酸锂为聚乳酸(PLA)/聚碳酸亚丙基酯(PPC)共混材料的增容剂,通过研究高氯酸锂对PLA/PPC共混体系相容性、热性能及力学性能的影响发现,高氯酸锂的加入能有效改善PLA与PPC之间的相界面,显著缩短体系的半结晶时间(最高达538.7%),使材料的断裂伸长率提高了235%。同时,通过调节高氯酸锂与PPC的共混顺序,并结合傅里叶红外光谱探究分析了高氯酸锂对PLA/PPC共混体系的增容机理,发现高氯酸锂通过对PPC的络合作用及PLA的电荷作用增强PLA与PPC之间作用力。
Lithium perchlorate was used as compatibilizer for polylactic acid(PLA)/polycarbonate(PPC) blends. By studying the effects of lithium perchlorate on the compatibility, thermal and mechanical properties of PLA/PPC blends, it is found that the addition of lithium perchlorate can effectively improve the phase interface between PLA and PPC, significantly reduce the semi-crystallization time of the system(up to 538.7%), and increase the elongation at break of the material by 235%. Meanwhile, by adjusting the blending sequence of lithium perchlorate and PPC, and combining with Fourier infrared spectroscopy(FT-IR), the compatibilization mechanism of lithium perchlorate on PLA/PPC blending system was analyzed. It is found that lithium perchlorate could enhance the PLA and PPC forces by complexing PPC and charge action with PLA.
作者
王凯
张凯
侯德发
刘磊
杨鸣波
Kai Wang;Kai Zhang;Defa Hou;Lei Liu;Mingbo Yang(College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2021年第8期76-82,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金面上项目(51033003)
国家自然科学基金创新研究群体项目(51721091)。
关键词
聚乳酸
聚碳酸亚丙酯
熔融共混
相容性
韧性
polylactic acid
polycarbonate
melting blend
compatibility
toughness
