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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：盘锦校区食品与环境学院副院长 Vice Dean School of Food and Environment Panjin Campus Dalian University of Technology
性别：女
毕业院校：大连理工大学
学位：博士
所在单位：化工海洋与生命学院
学科：环境工程. 环境科学
办公地点：环境学院 B 505
化工 海洋与生命学院 D05-201
联系方式：0427-2631799;
Terylene membrane modification with Polyrotaxanes, TiO2 and Polyvinyl alcohol for better antifouling and adsorption property
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论文类型：期刊论文
发表时间：2009-05-01
发表刊物：JOURNAL OF MEMBRANE SCIENCE
收录刊物：SCIE
卷号：333
期号：1-2
页面范围：110-117
ISSN号：0376-7388
关键字：Polyrotaxanes (PRs); TiO2; Adsorption; Hydrophilicity; Composite functional membranes
摘要：For better antifouling membranes and removal of small organic toxic pollutants from water by membrane adsorption, Polyrotaxanes (PRs)-TiO2-Polyvinyl alcohol (PVA) modified terylene membranes were prepared by dip-coating in an aqueous solution containing PR (0-3%), a derivatives of alpha-cycloclextrin (alpha-CD), TiO2 sol and PVA (1-10%), drying and cross-linking treatment with glutaraldehyde (GA). The filtration performance and antifouling property of modified membranes in filtering water containing dissolved milk powder as simulate extracellular polymer substances (EPSs) were studied, also studied was the membrane adsorption capacity to toluene in water. The PR-TiO2-PVA modified terylene membranes were characterized by FTIR (Fourier transform infrared spectroscopy) and scanning electron microscopy (SEM). It was found that the concentrations of PVA and PR, ratio of PR to TiO2 in casting solution affected modification parameters such as immobilization degree (ID), membrane water uptake ratio (W-r) and filtration performance parameters such as total resistance (R-t) and irreversible fouling resistance (R-f). Modified membrane resistance (R-m) and slope of V-t curves followed the same order, while slope of R-t/V-t curve reflected overall membrane fouling tendency including pore blocking and cake layer formation. Furthermore, this kind of modified membrane possesses a good adsorption capacity towards toluene in water which can be regenerated to different degrees by photo-catalytic UV irradiation depending on membrane modification conditions and deposited coating layer composition. Modification at PVA 5%, PR 2% and TiO2 produced the best membrane in antifouling, filtration performance and adsorptive removal of toluene and regeneration. Modification at PVA 10% and TiO2 may produce a membrane with better filtration performance but poor adsorption capacity. (C) 2009 Elsevier B.V. All rights reserved.