ABA Triblock Brush Polymers: Synthesis, Self-Assembly, Conductivity, and Rheological Properties

被引：170

作者：

Bates, Christopher M. ^{[1
]}

Chang, Alice B. ^{[1
]}

Momcilovic, Nebojsa ^{[1
]}

Jones, Simon C. ^{[2
]}

Grubbs, Robert H. ^{[1
]}

机构：

[1] CALTECH, Arnold & Mabel Beckman Labs Chem Synth, Pasadena, CA 91125 USA

[2] CALTECH, Jet Prop Lab, Electrochem Technol Grp, Pasadena, CA 91109 USA

来源：

MACROMOLECULES | 2015年 / 48卷 / 14期

关键词：

IONIC-CONDUCTIVITY; MOLECULAR-WEIGHT; SOLID-STATE; COPOLYMER ELECTROLYTES; BLOCK-COPOLYMERS; CROSS-LINKING; TRANSPORT; BATTERY;

D O I：

10.1021/acs.macromol.5b00880

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The synthesis, self-assembly; conductivity, and rheological properties of ABA triblock brush polymers (BBCPs) with grafted polystyrene (A block, N-PS = 21) and poly,(ethylene oxide) (B block, N-PEO = 45) side chains are reported. Two backbone molecular weights (N-A:N-B:N-A = 11:78:11 and 15:119:15) were investigated with lithium bis(trifluoromethane)sulfonimide (LiTFSI) doping ratios 2 <= [EO]:[Li+] <= 20. Blends with 2 <= [EO]: [Li+] <= 10 suppress PEO crystallization and self-assemble into hexagonally packed cylinders of the minority gPS component. Conductivity is on the order of 10(-3) S/cm at 105 degrees C with a corresponding elastic modulus ca. 10(4) Pa. The optimum conductivity occurs at a blend ratio near 10:1 [EO]: [Li+], similar to that reported for linear block copolymer analogues.

引用

页码：4967 / 4973

页数：7

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