高等学校化学学报2026，Vol.47Issue(9)：140-147,8.DOI:10.7503/cjcu20260135
赤藓糖醇与共价交联网络复合材料的制备与可控相变性质
Preparation and Controllable Phase Change Properties of Composites Between Erythritol and Covalent Cross-linking Network
摘要
Abstract
A chemically cross-linked polymer network system based on polyethyleneimine(PEI)and glycerol triglycidyl ether(GTE)was constructed.Using this system as a matrix,erythritol(ERY)phase change composites with controllable heat release behavior were prepared,and the regulatory mechanism of the polymer network on the supercooling stability and crystallization behavior of ERY was systematically investigated.The results show that the polymer network interacts with ERY through physical interactions,and ERY maintains its original crystal structure within the network.Notably,the increase in cross-linking density of the polymer network leads to a decrease in the cold crystallization temperature,which contradicts conventional theoretical expectations,as a higher cross-linking density implies an increase in—OH groups within the network that should enhance interactions with ERY and thereby increase the cold crystallization temperature.Further analysis reveals that intramolecular hydrogen bonds formed among the—OH groups within the polymer network competitively weaken the effective interactions between the network and ERY molecules,thereby promoting its intrinsic crystallization behavior.This study provides a new perspective and experimental basis for in-depth understanding of the regulation of intermolecular interactions on the phase change thermodynamic behavior in ERY-based composite phase change materials.关键词
赤藓糖醇/相变材料/可控相变材料/分子间相互作用/聚合物网络Key words
Erythritol/Phase change material/Controllable phase change material/Molecular interactions/Polymer network分类
化学化工引用本文复制引用
董乐,许一杰,方海东,李华,陈紫钰,张施慧,史全..赤藓糖醇与共价交联网络复合材料的制备与可控相变性质[J].高等学校化学学报,2026,47(9):140-147,8.基金项目
国网陕西省电力有限公司科技项目(批准号:5226KY250018)资助.Supported by the Technology Project of State Grid Shaanxi Electric Power Co.,Ltd.,China(No.5226KY250018). （批准号:5226KY250018）
