Journal
SOLAR ENERGY
Volume 213, Issue -, Pages 339-349Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2020.11.039
Keywords
Phase change material; Polyvinyl alcohol; Emulsion-electrospinning; Temperature regulating fibers; Crosslinking
Categories
Funding
- National Natural Science Foundation of China [22075252]
- Zhejiang-Czech Industrial RD Project [2019C54003]
- graduate innovation research project of College of Textile Science and Engineering (International Institute of Silk) of Zhejiang Sci-tech University
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The in situ cross-linked PVA/PCM composite nanofibers prepared by an emulsion-electrospinning process show good thermal energy storage property and thermal stability, as well as improved tensile strength and water resistance, which greatly expand the potential application field of PCM nanofibers.
The in situ cross-linked PVA/PCM composite nanofibers were prepared by an emulsion-electrospinning process, in which glutaraldehyde (GA) takes a crosslinking reaction with PCM emulsion-PVA blends to form spinning solution confirmed by FTIR. The cross-linked PVA/PCM nanofibers with a core-sheath structure display good thermal energy storage property and thermal stability characterized by TEM, FESEM, DSC and TG. More importantly, compared to PVA/PCM nanofibers, the tensile strength and water resistance of the crosslinked PVA/PCM nanofibers have marked improvments due to a combination of increased crosslinking network structure and decrease in the number of hydroxyl groups on the surface of nanofibers, which greatly expand the potential application field of PCM nanofibers.
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