Effects of a Mechanically Interlocked Structure on Ionic Conductivity in Polyrotaxane-Based Polymer Electrolytes

被引：2
作者：
Kim, Bitgaram [1 ]
Lee, Eunji [1 ]
Seo, Ji-Hun [1 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea
来源：
ACS MACRO LETTERS | 2024年 / 13卷 / 11期
基金：
新加坡国家研究基金会;
关键词：
GLASS-TRANSITION TEMPERATURE; MOLECULAR-WEIGHT; TRANSPORT; CRYSTALLINITY; MEMBRANES; COMPONENT; MOBILITY;
D O I：
10.1021/acsmacrolett.4c00480
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polyrotaxane (PR) is a mechanically interlocked polymer (MIP) utilized as an electrolyte because of its distinctive property of dynamic molecular mobility. While numerous studies have concentrated on modifying external properties to decrease high crystallinity, few have explored the control of intrinsic properties. This study examines the crystalline properties and molecular mobility of PR-based electrolytes, along with their effects on ionic conductivity, by manipulating intrinsic properties. By systematically varying the inclusion ratio, we demonstrate that lower inclusion ratios lead to reduced crystallinity, enhancing molecular mobility. Consequently, 100PRE exhibits decreased crystallinity due to lower aggregation probabilities of alpha-cyclodextrins (alpha-CDs), longer T 2 relaxation times (0.215 s), and higher ionic conductivity (3.4 x 10(-3) S cm(-1) at 25 degrees C).
引用
收藏
页码：1463 / 1468
页数：6
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