Effects of Counter Anion Type on Melt Rheological Properties of Hyperbranched Polyethylene Ionomers Containing Covalently Bound Quaternary Ammonium Cations

被引：0

作者：

Chen, Mei ^{[1
,2
]}

Jiang, Binbo ^{[2
]}

Wang, Jingdai ^{[2
]}

Yang, Yongrong ^{[2
]}

Ye, Zhibin ^{[1
,3
]}

机构：

[1] Laurentian Univ, Bharti Sch Engn, Sudbury, ON P3E 2C6, Canada

[2] Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China

[3] Concordia Univ, Dept Chem & Mat Engn, Montreal, PQ H3G 1M8, Canada

来源：

MACROMOLECULAR REACTION ENGINEERING | 2022年 / 16卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

counter ion; ionomers; polyethylene; rheology; PD-DIIMINE; VISCOELASTIC BEHAVIOR; EXCHANGE MEMBRANES; ETHYLENE COPOLYMERIZATION; MOLECULAR-WEIGHT; POLYMERS; DEPENDENCE; MORPHOLOGY; LONOMERS;

D O I：

10.1002/mren.202200021

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The paper investigates the effects of counter anions of varying sizes including BF4-, PF6-, SbF6-, and Tf2N- on the rheological properties of a range of hyperbranched polyethylene ionomers containing covalently bound quaternary ammonium cations. While the choice of counter anions has no significant effect on thermal properties, distinct effects on rheological properties have been demonstrated. With the increase of counter anion size in the order from BF4- to PF6-, SbF6-, and Tf2N-, the ionic interactions of the counter anion with the quaternary ammonium ion weaken, leading to reduced terminal relaxation time, zero-shear viscosity, and flow activation energy. The differences in these properties are most pronounced with the ionomer having Tf2N- counter anion since it is significantly larger than the others.

引用

页数：7