Recuperation of polyvinyl alcohol (PVA) through microporous membranes

被引：0
|
作者：
Bassetti, FJ
Peres, L
Petrus, JCC
机构：
[1] Univ Fed Santa Catarina, Chem & Food Engn Dept, BR-88040900 Florianopolis, SC, Brazil
[2] UNICAMP, Inst Chem Engn, Dept Polymer Technol, Campinas, SP, Brazil
来源：
LATIN AMERICAN APPLIED RESEARCH | 2001年 / 31卷 / 05期
关键词：
polyvinyl alcohol; ultrafiltration; textile effluent treatment; recycling;
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Microporous, membranes were prepared using the technique of phase inversion by immersion-coagulation in the presence of a non solvent, dissolving different concentrations of polyvinylidene fluoride (PVDF) pure or blended with other polymers, such as polyethylene glycol (PEG) and polyvinyl acetate (PVAc) in N'N' dimetilformamide. (DNIF). Characterization of the membranes was done by Scanning Electron Microscopy (SEM), permeability tests and polyvinyl alcohol (PVA) retention experiments. The effect of membrane porosity on permeate flux and PVA retention was verified using a tangential ultrafiltration pilot. The operational conditions were 3 kgf/cm(2), 50degreesCand tangential velocity of 0.6 m/s.
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页码：547 / 550
页数：4
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