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[1]李 卫,李晶晶,张 芳,等.聚偏氟乙烯-六氟丙烯多孔膜的制备和微结构[J].武汉工程大学学报,2015,37(05):55-59.[doi:10. 3969/j. issn. 1674-2869. 2015. 05. 011]
 ,,et al.Preparation and microstructure of Poly (vinylidene fluoride-co-hexafluoropropylene)porous membrane[J].Journal of Wuhan Institute of Technology,2015,37(05):55-59.[doi:10. 3969/j. issn. 1674-2869. 2015. 05. 011]
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聚偏氟乙烯-六氟丙烯多孔膜的制备和微结构(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
37
期数:
2015年05期
页码:
55-59
栏目:
材料科学与工程
出版日期:
2015-05-31

文章信息/Info

Title:
Preparation and microstructure of Poly (vinylidene fluoride-co-hexafluoropropylene)porous membrane
文章编号:
1674-2869(2015)05-0055-05
作者:
李 卫李晶晶张 芳杜飞鹏*
武汉工程大学材料科学与工程学院,湖北 武汉 430074
Author(s):
LI WeiLI Jing-jing Zhang Fang DU Fei-peng
School of Materials Science and Engineering, Wuhan Institute of Technology,Wuhan 430074, China
关键词:
聚偏氟乙烯-六氟丙烯浸没沉淀相转化多孔膜微结构孔隙率
Keywords:
Poly (vinylidene fluoride-co-hexafluoropropylene) immersion precipitation phase transformation method porous membrane microstructure porosity
分类号:
0647;TQ028.8
DOI:
10. 3969/j. issn. 1674-2869. 2015. 05. 011
文献标志码:
A
摘要:
为了研究非溶剂对多孔膜微结构的影响,采用浸没沉淀相转化法,以N,N-二甲基甲酰胺(DMF)为溶剂,以甲醇、乙醇、乙二醇或丙三醇为非溶剂,制备了聚偏氟乙烯-六氟丙烯(PVDF-HFP)多孔膜. 扫描电子显微镜显示,铸膜液中没有添加非溶剂时,由于N,N-二甲基甲酰胺(DMF)相对于水的扩散速度很快,导致多孔膜表面形成致密皮层,膜支撑层的孔结构为指状孔和海绵状孔相结合;而非溶剂甲醇和乙醇的添加,并没有明显改变多孔膜皮层的致密结构,支撑层仍然是指状孔和海绵状孔相结合;但是,多元醇的添加使制备的PVDF-HEP皮层和中间层具有较好的孔结构,孔隙率比较高. 丙三醇添加到PVDF-HFP的制膜液中,使多孔膜的皮层形成了均匀的微孔结构,膜支撑层为拇指状大孔结构,孔隙率达到81.3%.
Abstract:
To investigate the effect of additives on the microstructure of membrane, porous membrane of Poly (vinylidene fluoride-co- hexafluoropropylene) (PVDF-HFP) was prepared with N, N-dimethylformamide (DMF) as solvent and methanol, ethanol, ethylene glycol or glycerol as additives via immersion precipitation phase transformation method. Scanning electron microscope shows that the dense cortex is formed with only DMF as solvent and both finger holes and cavernous holes are formed in the support layer because of the solvent’s fast diffusion rate. When methanol or ethanol was added, the dense cortex still exists and support layer remains the combination of finger holes and cavernous holes. The pores structure of cortex and support layer can be optimized via adding polyol into PVDF-HFP solution. After glycerol was added into the polymer solution, the formed PVDF-HFP membranes have large size pores of finger holes in the support layer structure and uniform micropores in dense cortex, and their porosity reached 81.3%. The addition of polyol can increase the size of pores and improve the porosity.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-03-25基金项目:武汉工程大学科学研究基金(K201464).作者简介:李卫(1989),男,湖北鄂州人,硕士研究生.研究方向:功能复合材料援* 通信联系人
更新日期/Last Update: 2015-07-01