Comparing Ammonium and Phosphonium Polymerized Ionic Liquids: Thermal Analysis, Conductivity, and Morphology

被引：88

作者：

Hemp, Sean T. ^{[1
]}

Zhang, Mingqiang ^{[1
]}

Allen, Michael H., Jr. ^{[1
]}

Cheng, Shijing ^{[1
]}

Moore, Robert B. ^{[1
]}

Long, Timothy E. ^{[1
]}

机构：

[1] Virginia Tech, Dept Chem, Macromol & Interfaces Inst, Blacksburg, VA 24061 USA

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2013年 / 214卷 / 18期

基金：

美国国家科学基金会;

关键词：

ammonium; ionic conductivity; phosphonium; polymerized ionic liquids; BIOLOGICALLY-ACTIVE POLYMERS; QUATERNARY AMMONIUM; ANTIMICROBIAL ACTIVITY; ANTIBACTERIAL ACTIVITY; MECHANICAL-PROPERTIES; MOLECULAR-WEIGHT; COPOLYMERS; STABILITY; DERIVATIVES; MEMBRANES;

D O I：

10.1002/macp.201300322

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Conventional free radical polymerization and anion metathesis of ammonium and phosphonium styrenics successfully generates high-molecular-weight polymerized ionic liquids (PILs). Phosphonium polyelectrolytes containing Cl- counterions display significantly higher thermal stabilities (>370 degrees C) compared with ammonium analogs (<220 degrees C). Anion exchange to BF4-, TfO-, and Tf2N- improves the thermal stability of all the PILs and depresses their T-g. Impedance-spectroscopy-probed ionic conductivities of PILs containing Tf2N-, and phosphonium PILs exhibit higher values than ammonium analogs. Phosphonium PILs displayed many advantages over ammonium PILs for emerging applications that demand higher thermal stabilities and ionic conductivities.

引用

页码：2099 / 2107

页数：9

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