Fibrous form-stable phase change materials with high thermal conductivity fabricated by interfacial polyelectrolyte complex spinning

Hui Fang; Jialin Lin; Lingjie Zhang; Anlin Chen; Fangjuan Wu; Lihong Geng; Xiangfang Peng

doi:10.1016/j.carbpol.2020.116836

Fibrous form-stable phase change materials with high thermal conductivity fabricated by interfacial polyelectrolyte complex spinning

Carbohydr Polym. 2020 Dec 1:249:116836. doi: 10.1016/j.carbpol.2020.116836. Epub 2020 Aug 9.

Authors

Hui Fang¹, Jialin Lin², Lingjie Zhang², Anlin Chen², Fangjuan Wu³, Lihong Geng⁴, Xiangfang Peng⁵

Affiliations

¹ College of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China; Key Laboratory of Polymer Materials and Products of Universities in Fujian, Fujian University of Technology, Fuzhou 350118, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, Fujian University of Technology, Fuzhou 350118, China.
² College of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China.
³ College of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China; Key Laboratory of Polymer Materials and Products of Universities in Fujian, Fujian University of Technology, Fuzhou 350118, China. Electronic address: fjwugfz@163.com.
⁴ College of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China; Key Laboratory of Polymer Materials and Products of Universities in Fujian, Fujian University of Technology, Fuzhou 350118, China. Electronic address: glhfjut@fjut.edu.cn.
⁵ College of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China; Key Laboratory of Polymer Materials and Products of Universities in Fujian, Fujian University of Technology, Fuzhou 350118, China.

PMID: 32933680
DOI: 10.1016/j.carbpol.2020.116836

Abstract

Polyethylene glycol (PEG)-based composite phase change materials (PCMs) containing hydroxylated boron nitride (BN-OH), cellulose nanofiber (CNF), and chitosan (CS) were prepared by the method of interfacial polyelectrolyte complex spinning, based on in-situ ionic cross-linking between CNF and CS. The wrapping effect of cross-linked CNF/CS networks and the strong interfacial interactions contributed to superior shape-stability throughout the phase change process. Furthermore, the homogeneously dispersed BN-OHs was beneficial to the construction of the continuous thermal conductive paths, and the excellent interfacial interactions between BN-OH and the matrix would lower the heat loss caused by phonon scattering in the interface. As a result, the thermal conductivity of the PCMs containing 47.5 wt% BN-OH reached 4.005 W/mK, which was 22.56 times higher than that of the pure PEG. Combined with the excellent thermal reliability and thermal stability, the form-stable PCMs showed a promising application potential in the fields of electronic cooling or temperature-adaptable textiles.

Keywords: Boron nitride; Chitosan; Form-stable phase change material; Interfacial polyelectrolyte complex spinning; Nanocellulose; Thermal conductivity.