| Hydrophilic modification of polytetrafluoroethylene flat sheet membrane |
| Authors： Chao Hu1 Hailin Zhu1,2Huapeng Zhang1,2*YuhaiGuo1,2Jiuming Li1Jianyong Chen1,2 |
| Units： 1Key Laboratory of Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou, 310018；2 Engineering?Research?Center?for?Eco-Dyeing?and?Finishing?of?Textiles, Ministry?of?Education,? Zhejiang?Sci-Tech?University,?Hangzhou,?310018,?China?） |
| KeyWords： polytetrafluoroethylene flat sheet membrane; polystyrene sulfonate; polyvinyl alcohol; hydrophilic |
| ClassificationCode：TQ322.3(TB303、TQ342.712) |
| year,volume(issue):pagination： 2015,35(3):1-5 |
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Abstract： |
| A physical hydrophilic modification method was investigated in this study.It took hydrophilic material as vine and the fibril in the polytetrafluoroethylene (PTFE) flat sheet membrane as tree.The PTFE flat sheet membrane was hydrophilic modifiedby using polystyrene sulfonate (PSS) as a hydrophilic agent, polyvinyl alcohol (PVA) as an adhesive and glutaraldehyde (GA) as a crosslinking agent. The effect of hydrophilic modification on the structure and property of the PTFE flat sheet membrane was investigated. SEM images showed that the fibrilsin the microstructure of the modified PTFE membrane became thick and the fibrils were encapsulatedin the hydrophilic material. With the increase of concentration of PVA and PSS, pore size, porosity and surface contact angle of the modified membrane decreased, the pure water flux firstlyincreased and then reduced.The hydrophilic persistence of the modified PTFE flat sheet membrane is good, the rejection of turbidity of crystal grinding wastewater was 99.84%, and the modification effectively inhibited the pollution of protein adsorption. |
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Funds： |
| 国家科技支撑计划（2013BAC01B01）；国家高技术研究发展计划(863计划No.2013AA065003)；国家自然科学基金（21406207）；浙江省新苗人才计划项目（No.2013R406031）；浙江理工大学优秀研究生学位论文培育基金（No.2013YSPY13）；浙江理工大学研究生创新研究项目（NO. YCX13006）。 |
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AuthorIntro： |
| 胡超，1989-，女，浙江绍兴人，硕士研究生，主要研究方向为PTFE膜材料的制备及应用，E-mail: 417540141@qq.com |
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Reference： |
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