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- Title
Preparation and Characterization of Poly(vinyl alcohol) Based Polyampholyte Membrane.
- Authors
Lijuan Yu; Pingrui Meng; Shenghuan Liu; Xiaohui Wang; Yanmei Zhang; Haoqiang Yu
- Abstract
Poly(vinyl alcohol)-g-poly(sodium allylsulfonate/acrylamide) (PVA-g-PSAS/AM) were synthesized by free radical polymerization. The PVA-g-PSAS/AM was degraded into poly(vinyl alcohol)-g-poly(sodium allylsulfonate/ vinylamine) (PVA-g-PSASNA), which was PVA based polyampholyte (PBPA). The PBPA homogeneous membrane was characterized by FT-IR and SEM. The isoelectric point of PBPA was pH=6. Surface hydrophilicity of membranes was examined by automated contact angle measurement device. At 90 °C, the PBPA membrane showed a separation factor of 991 and a flux of 1140 g/(m²⋅h) for 90 wt.% ethanol aqueous solution, while about 1491 and 970 g/(m²⋅h) for 90 wt.% isopropanol aqueous solution.
- Subjects
POLYVINYL alcohol; POLYMERIZATION; FREE radicals; SODIUM; FOURIER transform infrared spectroscopy; SCANNING electron microscopy
- Publication
Polymers & Polymer Composites, 2012, Vol 20, Issue 1/2, p59
- ISSN
0967-3911
- Publication type
Article
- DOI
10.1177/0967391112020001-211