材料科学
热稳定性
烷基
共聚物
相变
化学工程
相(物质)
倍半硅氧烷
傅里叶变换红外光谱
聚合物
纳米技术
有机化学
化学
复合材料
工程类
物理
量子力学
作者
Haonan Li,Chunmei Li,Haoran Zhang,Dezhong Yin,Yuanxin He,Guoxian Zhang,Jiaojun Tan,Qiuyu Zhang
出处
期刊:Small
[Wiley]
日期:2025-05-15
卷期号:21 (27): e2504538-e2504538
被引量:3
标识
DOI:10.1002/smll.202504538
摘要
Solid-solid phase change materials (SSPCMs) have received great interest due to their exceptional thermal management and superior shape stability. However, traditional crosslinked structures predominantly rely on ester groups, which limits their applicability under extreme conditions such as high humidity. Herein, a novel strategy is presented for preparing SSPCMs with excellent latent heat and environmental robustness via thiolactone ring-opening reactions. Easily synthesized thiolactone copolymers provide abundant reactive sites which are then functionalized with alkyl amines and alkyl acrylates as grafted phase change components. A small amount of polyetheramine is employed to crosslink the functionalized copolymer, forming a robust network. The resulting SSPCMs exhibit tunable phase transition temperatures (44.7-61.0 °C) and enthalpies (20.3-98.9 J g-1). Owing to the high density of alkyl groups, the SSPCMs can maintain the stability of mechanical properties, phase change properties, and shape when immersed in water, acid, and alkaline conditions for 2 h. In addition, the synthesized phase change films demonstrate reversible information encryption, shape memory and infrared stealth properties. When integrated with polydopamine nanoparticles, these materials also exhibit excellent solar-thermal stores/releases capacity. Collectively, these unique features provide new insights and ideas for the development of the next generation of smart thermal management materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI