Synthesis and characterization of microencapsulated phase change materials with chitosan-based polyurethane shell

Yan Gao; Xiaoye Geng; Xiaojuan Wang; Na Han; Xingxiang Zhang; Wei Li

doi:10.1016/j.carbpol.2021.118629

Synthesis and characterization of microencapsulated phase change materials with chitosan-based polyurethane shell

Carbohydr Polym. 2021 Dec 1:273:118629. doi: 10.1016/j.carbpol.2021.118629. Epub 2021 Sep 1.

Authors

Yan Gao¹, Xiaoye Geng¹, Xiaojuan Wang¹, Na Han¹, Xingxiang Zhang¹, Wei Li²

Affiliations

¹ State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China.
² State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China. Electronic address: liwei@tiangong.edu.cn.

PMID: 34561020
DOI: 10.1016/j.carbpol.2021.118629

Abstract

In this paper, chitosan-based polyurethane (c-PU) microencapsulated phase change materials (MicroPCMs) were prepared via the interfacial polymerization reaction of hexamethylene diisocyanate and chitosan accompanied by the charge attraction-assisted. The utilization of natural non-toxic chitosan in MicroPCMs expanded the application of chitosan and guided a new approach to preparing green shell. And the morphology of MicroPCMs with different reaction ration, surfactant and the pH value of reaction system were systematically investigated. The MicroPCMs with c-PU shell exhibited outstanding latent thermal performance (ΔH_m = 106.3 J/g, ΔH_c = -105.1 J/g), high energy storage efficiency (E = 71.4%), excellent thermal stability and cyclic durability. The c-PU MicroPCMs with reversible photochromic show promising application in the fields of anti-counterfeiting technology and flexible wearable UV protective clothing.

Keywords: Charge attraction; Chitosan-based polyurethane; Energy storage; Interfacial polymerization; Reversible photochromic.