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现代化工  2020, Vol. 40 Issue (9): 75-79    DOI: 10.16606/j.cnki.issn0253-4320.2020.09.016
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
聚偏氟乙烯超滤膜仿生矿化增强及其抗压密性能的研究
徐积斌, 康雪婷, 陈丙晨, 白云翔, 董亮亮, 张春芳
江南大学化学与材料工程学院, 合成与生物胶体教育部重点实验室, 江苏 无锡 214122
Enhancing mechanical strength of polyvinylindene fluoride ultrafiltration membrane via biomimetic mineralization and study on its anti-compression properties
XU Ji-bin, KANG Xue-ting, CHEN Bing-chen, BAI Yun-xiang, DONG Liang-liang, ZHANG Chun-fang
Key Laboratory of Synthetic and Biological Colloids of the Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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摘要 通过仿生矿化技术在PVDF超滤膜表面和孔壁修饰无机ZrO2矿化层来制备PVDF/ZrO2矿化膜,考察矿化时间对膜的微观结构、机械强度和抗压密性能的影响。结果表明,ZrO2矿化层均匀负载于膜表面和膜孔内壁,且随着矿化时间的增加矿化层逐渐增厚;无机ZrO2矿化层可显著提高PVDF膜的结构刚性,矿化时间为60 min的PVDF/ZrO2矿化膜的拉伸强度和硬度比纯PVDF膜分别提高了76%、79%,运行过程中因机械压密产生的通量衰减率则从纯PVDF膜的53%降低至32%,达到利用ZrO2矿化层提高PVDF膜抗压密性能、抑制通量衰减的目的。同时,ZrO2矿化层改善了PVDF膜的透水性能,PVDF/ZrO2矿化膜的纯水通量和BSA截留率分别达到165.2 L/m2·h和91.4%。
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徐积斌
康雪婷
陈丙晨
白云翔
董亮亮
张春芳
关键词:  PVDF膜  仿生矿化  增强  抗压密性能  通量衰减    
Abstract: Mineralized PVDF/ZrO2 membrane is prepared through modifying inorganic ZrO2 mineralized layer on the surface and pore wall of PVDF ultrafiltration membrane by biomimetic mineralization technology.The effects of mineralization time on the microstructure,mechanical strength and anti-compression properties of the membrane are investigated.Results indicate that ZrO2 mineralized layer is evenly supported on the surface of the membrane and the inner wall of pores of the membrane.The mineralized layer gradually thickens with the prolonging mineralization time.Inorganic ZrO2 mineralization layer can significantly increase the structural rigidity of PVDF membrane,therefore improving its anti-pressure density and suppressing its flux attenuation.In comparison to pure PVDF membrane,the tensile strength and hardness of the PVDF/ZrO2 mineralized membrane that has been mineralized for 60 min increase by 76% and 79%,respectively,while the flux attenuation rate generated due to mechanical compaction during operation decreases from 53% to 32%.On the other hand,ZrO2 mineralized layer has also elevated the water permeability of PVDF membrane.The pure water flux and BSA rejection of PVDF/ZrO2 mineralized membrane reach 165.2 L·m-2·h and 91.4%,respectively.
Key words:  PVDF membrane    biomimetic mineralization    enhancement    anti-compression properties    flux attenuation
收稿日期:  2019-11-12      修回日期:  2020-07-03          
ZTFLH:  TQ051.893  
基金资助: 国家自然科学基金项目(21576114)
通讯作者:  张春芳(1977-),女,博士,副教授,主要从事膜分离与环境工程方面研究,通讯联系人,zcf326@163.com。    E-mail:  zcf326@163.com
作者简介:  徐积斌(1993-),男,硕士研究生,主要从事膜材料制备及应用研究,15551276916@163.com
引用本文:    
徐积斌, 康雪婷, 陈丙晨, 白云翔, 董亮亮, 张春芳. 聚偏氟乙烯超滤膜仿生矿化增强及其抗压密性能的研究[J]. 现代化工, 2020, 40(9): 75-79.
XU Ji-bin, KANG Xue-ting, CHEN Bing-chen, BAI Yun-xiang, DONG Liang-liang, ZHANG Chun-fang. Enhancing mechanical strength of polyvinylindene fluoride ultrafiltration membrane via biomimetic mineralization and study on its anti-compression properties. Modern Chemical Industry, 2020, 40(9): 75-79.
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https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.09.016  或          https://www.xdhg.com.cn/CN/Y2020/V40/I9/75
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