Preparation and Purification Properties of Poly(Vinyl Alcohol) Nano-Fibers Based Sandwich Structure Material

Abstract:

Electrospinning of PVA can be performed from aqueous solution leading to the generation of homogenous nanofiber webs. PVA nanofibers are generally required to be modified because of its poor stability in water. The water stability of PVA nanofibers was improved by heat treatment in this paper. The test results showed that the crystallinity of the PVA nanofibers increases after heat-treatment. The crystallinity which is the largest increased by 12% when they were treated at 150°C for 10 min. The heat-treated fibers don’t dissolve in water and show certain degree of agglutination and swelling. PVA nanofibers were taken as the inner layer of the sandwich structure purification material prepared with the hot pressing technology. The filtering experiment showed that the filtration properties were better when the area density of PVA nanofibers is 2.5g/m2. The filtration efficiency of materials and retention rate of PVA nanofibers decreased after being used for 5 times.

• Periodical: Advanced Materials Research (Volume 683)
• Pages: 11-16
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.683.11
• Online since: April 2013
• Authors: Rui Xue Liu, Tai Qi Liu, Bin Bin Cao, Fu Rui Ma, Na Zhao, Xiao Long Zhao, Ning Gao
• Keywords: Filtration, Purification, PVA Nanofibers, Sandwich Structure, Water Stability

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