Fabrication and characterization of in situ cross-linked electrospun Poly(vinyl alcohol)/phase change material nanofibers. (1st January 2021)

• Record Type: Journal Article
• Authors: Zhou, Lan; Shi, Feng; Liu, Guojin; Ye, JingPeng; Han, PengShuai; Zhang, Guoqing
• Is Part Of: Solar energy. Volume 213(2021)
• Page Start: 339
• Page End: 349
• Publication Date: 2021-01-01
• Subjects: Phase change material -- Polyvinyl alcohol -- Emulsion-electrospinning -- Temperature regulating fibers -- Crosslinking; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2020.11.039
• Languages: English
• ISSNs: 0038-092X

Abstract

Highlights: Nanofibers with core-sheath structure were fabricated by emulsion electrospinning. In-situ crosslinking simplify the modification process and reduce the negative effects. Nanofibers have good thermal property, tensile strength and water resistance. Abstract: 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.