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

页码：417 / 428

页数：12

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