Title: PREPARATION AND CHARACTERIZATION OF POLY(VINYL ALCOHOL) BASED POLYAMPHOLYTE MEMBRANE
Page Range: p.59-62
Author(s): Lijuan Yu; Pingrui Meng; Shenghuan Liu; Xiaohui Wang; Yanmei Zhang; Haoqiang Yu
File size: 283K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 20
Issue No: No.1-2
Abstract
Poly(vinyl alcohol)-g-poly(sodium allylsulphonate/acrylamide) (PVA-g-PSAS/AM) were synthesised by free radical polymerisation. The PVA-g-PSAS/AM was degraded into poly(vinyl alcohol)-g-poly(sodium allylsulphonate/ vinylamine) (PVA-g-PSAS/VA), 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 degrees 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. 8 Refs.
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