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Effect of hypochlorite concentration on properties of posttreated outer-skin ultrafiltration membranes spun from cellulose acetate/poly(vinyl pyrrolidone) blends
Qin, JJ; Cao, YM; Li, Y
关键词Ultrafiltration Membranes Blends Hypochlorite Treatment Morphology
刊名JOURNAL OF APPLIED POLYMER SCIENCE
2005-07-05
DOI10.1002/app.21756
97期:1页:227-231
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Polymer Science
研究领域[WOS]Polymer Science
关键词[WOS]HOLLOW-FIBER MEMBRANES ; PERFORMANCE ; SEPARATION ; MORPHOLOGY ; FLUX
英文摘要An outer-skin hollow-fiber ultrafiltration (UF) membrane was spun from a new dope solution containing cellulase acetate (CA)/poly(vinyl pyrrolidone) (PVP 360K)/N-methyl-2-pyrrolidone (NMP)/water using a wet-spinning technique. The as-spun fibers were posttreated with a hypochlorite solution over a range of concentrations for a fixed period of 24 h. The experimental results showed that the pure water flux of the treated membrane increased with increasing hypochlorite concentration. The treated membrane experienced an increased fouling tendency with increasing hypochlorite concentration because the hydrophilicity of the treated membrane decreased as a result of the removal of PVP contents in the membrane matrix after hypochlorite treatment. SEM images revealed that the membrane had an outer dense skin, a porous inner surface, and a spongelike structure, which confirmed that addition of PVP favored the suppression of macrovoids in the membrane. The rnembrane pore size could be significantly increased when the hypochlorite concentration reached 200 mg/L. It was concluded that hypochlorite treatment provided an additional option to easily alter the pore size of UF membranes. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 227-231, 2005.
语种英语
WOS记录号WOS:000229066800028
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139917
专题中国科学院大连化学物理研究所
作者单位1.Singapore Utilities Int Pte Ltd, Ctr Adv Water Technol, Singapore 637723, Singapore
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Innovat Ctr, Inst Environm Sci & Engn, Singapore 637723, Singapore
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Qin, JJ,Cao, YM,Li, Y. Effect of hypochlorite concentration on properties of posttreated outer-skin ultrafiltration membranes spun from cellulose acetate/poly(vinyl pyrrolidone) blends[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2005,97(1):227-231.
APA Qin, JJ,Cao, YM,&Li, Y.(2005).Effect of hypochlorite concentration on properties of posttreated outer-skin ultrafiltration membranes spun from cellulose acetate/poly(vinyl pyrrolidone) blends.JOURNAL OF APPLIED POLYMER SCIENCE,97(1),227-231.
MLA Qin, JJ,et al."Effect of hypochlorite concentration on properties of posttreated outer-skin ultrafiltration membranes spun from cellulose acetate/poly(vinyl pyrrolidone) blends".JOURNAL OF APPLIED POLYMER SCIENCE 97.1(2005):227-231.
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