Electrochemical properties of polyolefin nonwoven fabric modified with carboxylic acid group for battery separator

被引：37

作者：

Choi, SH ^{[1
]}

Kang, HJ ^{[1
]}

Ryu, EN ^{[1
]}

Lee, KP ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Grad Sch, Dept Chem, Taegu 702010, South Korea

来源：

RADIATION PHYSICS AND CHEMISTRY | 2001年 / 60卷 / 4-5期

关键词：

polyolefine nonwoven fabrics; radiation-induced graft copolymerization; acrylic acid; ion-exchange capacity; electrolyte retention; electrical resistance;

D O I：

10.1016/S0969-806X(00)00396-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carboxylic acid group was introduced by radiation-induced grafting of acrylic acid (AAc) onto polyolefine nonwoven fabric (PNF), wherein the PNF comprises at least about 60% of a polyethylene having a melting temperature at similar to 132 degreesC and no more than about 40% of a second polypropylene having a lower melting temperature at similar to 162 degreesC, for a battery separator. The AAc-grafted PNF was characterized by XPS, SEM, DSC, TGA and porosimeter. The wetting speed, electrolyte retention, electrical resistance, and tensile strength were evaluated after grafting of AAc. It rc as found that the wetting speed, electrolyte retention, thickness, and ion-exchange capacity increased, whereas the electrical resistance decreased with increasing grafting yield. The tensile strength decreased with increasing grafting yield, whereas the elongation decreased with increasing grafting yield. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：495 / 502

页数：8

共 15 条

[1] SYNTHESIS OF ION-EXCHANGE MEMBRANES BY RADIATION GRAFTING [J].