摘要
采用微注塑和压制成型制备了聚乳酸/聚对苯二甲酸-己二酸丁二酯/埃洛石纳米管(PLA/PBAT/HNT)三元复合材料,研究了两种成型方式下材料“加工-结构-性能”之间的关系。结果表明,两种方式成型的制品具有截然不同的相形态,分散相在压制成型和微注塑成型中分别成球形和纤维状;成型方式的不同会改变HNT在基体中的分布状态,压制成型中HNT主要分布在PBAT相和两相界面处,而微注塑成型HNT主要分布在PLA相;与纯PLA/PBAT相比,压制成型中HNT阻碍了共混物中PLA的结晶,而在微注塑成型中HNT则会促进PLA结晶;HNT能够提高共混物的强度,其中微注塑样品的增强效果更加明显,少量的HNT能够提高共混物韧性。
Poly(lactic acid)/Poly(butylene adipate-co-terephthalate)/halloysite nanotube(PLA/PBAT/HNT)ternary composites were processed by microinjection and compression molding.The relationship of“processing-structure-performance”between two molding mode were investigated.The results show that samples prepared by the above two methods have completely different phase morphologies,which the spherical phase of PBAT is dominated by the compression molding,while fibrous phase of PBAT is dominated by the microinjection molding.Different processing methods lead to different location of HNT in the polymer matrix,HNT mainly distributes in PBAT phase and the PLA/PBAT interface in compression molding.While for microinjection molding,HNT mainly distributes in PLA phase.In contrast to the neat PLA/PBAT,the presence of HNT in the compression molding hinders the crystallization of PLA,whereas HNT in microinjection molding promotes PLA crystallization.HNT could increase the strength of the blends,the enhancement effect is more obvious in the microinjection molding.And low HNT loading can improve the toughness of blends.
作者
胡纵
范冰
蓝滨
杨其
HU Zong;FAN Bing;LAN Bin;YANG Qi(College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China;Qingdao Research Institute of Sichuan University,Qingdao 266220,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2022年第6期131-135,190,共6页
China Plastics Industry
关键词
微注塑成型
聚乳酸
聚对苯二甲酸-己二酸丁二酯
埃洛石纳米管
Microinjection Molding
Poly(lactic acid)
Poly(butylene adipate-co-terephthalate)
Halloysite Nanotube
