期刊
CARBOHYDRATE POLYMERS
卷 249, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116836
关键词
Interfacial polyelectrolyte complex spinning; Nanocellulose; Chitosan; Form-stable phase change material; Boron nitride; Thermal conductivity
资金
- National Natural Science Foundation of China [51703029]
- Foundation for Distinguished Young Talents in Higher Education of Fujian Province [GY-Z18157]
- Regional Development Foundation of Fujian Province [2019H4005]
- China Scholarship Council [201909360003]
Polyethylene glycol (PEG)-based composite phase change materials (PCMs) containing hydroxylated boron ni-tride (BN-OH), cellulose nanofiber (CNF), and chitosan (CS) were prepared by the method of interfacial poly-electrolyte 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-adap-table textiles.
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