Mechanically Strong and Ductile Polypropylene/Poly(ethylene-co-octene) Blends Prepared Through Multistretched Extrusion: Morphological Evolution, Toughening, and Reinforcing Mechanism

被引：5
作者：
Wang, Jianfeng [1 ]
Yang, Mingtao [1 ,2 ]
Wu, Hong [1 ]
Guo, Shaoyun [1 ]
机构：
[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China
[2] Yichun Univ, Coll Chem & Bioengn, Yichun, Peoples R China
来源：
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2018年 / 57卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Phase morphology; PP; super-molecular structure; toughening and reinforcing; SHEAR-FLOW; TENSILE PROPERTIES; POLY(LACTIC ACID); POLYPROPYLENE; CRYSTALLIZATION; NANOCOMPOSITES; POLYETHYLENE; COMPOSITES; FILMS; BEHAVIOR;
D O I：
10.1080/03602559.2016.1263866
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this paper, polypropylene matrix with densely stacked shish-kebab crystalline structure and dispersed poly(ethylene-co-octene) phase with micro/nanofibers were formed simultaneously in polypropylene/poly(ethylene-co-octene) blends through multistretched extrusion. The as-obtained highly oriented and densely stacked shish-kebab crystalline structure can provide blends with greatly enhanced tensile yield strength. The as-formed poly(ethylene-co-octene) micro/nanofibers can toughen polypropylene matrix effectively through deflecting the crack, which is different from the toughening mechanism in polypropylene/poly(ethylene-co-octene) blends filled with spherical poly(ethylene-co-octene) particles. Compared with that of conventional polypropylene/poly (ethylene-co-octene) blends, the tensile yield strength of multistretched blends increased approximately 300%, while the notched impact strength declined slightly. [GRAPHICS] .
引用
收藏
页码：417 / 428
页数：12
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