以聚乙烯醇(PVA)为成膜载体,由聚四氟乙烯(PTFE)分散乳液制得PTFE疏水膜,分析和讨论了膜烧结后的组成、动态力学性能的变化,用扫描电子显微镜(SEM)观察了膜表面形貌.结果表明:(1)制备的PTFE膜较PTFE在组成上无明显变化;(2)经定长和松弛状态烧结的PTFE膜,其DMA谱图的α转变较PTFE未发现较大变化;(3)经定长状态下烧结后所得PTFE膜中原纤网络结点之间构成了较为疏松的微孔结构,而在松弛状态下烧结所得膜的微孔结构较为致密.
参考文献
| [1] | Goessi M;Tervoort T;Smith P .Melt-spun poly(tetrafluoroethylene) fibers[J].Journal of Materials Science,2007(19):7983-7990. |
| [2] | Chen-Yuan Tu;Ying-Ling Liu;Kueir-Rarn Lee;Juin-Yih Lai .Hydrophilic surface-grafted poly(tetrafluoroethylene) membranes using in pervaporation dehydration processes[J].Journal of Membrane Science,2006(1/2):47-55. |
| [3] | 陈珊妹,李敖琪.双向拉伸PTFE微孔膜的制备及其孔性能[J].膜科学与技术,2003(02):19-22. |
| [4] | Chen YC.;Tsai CC.;Lee YD. .Preparation and properties of silylated PTFE/SiO2 organic-inorganic hybrids via sol-gel process[J].Journal of Polymer Science, Part A. Polymer Chemistry,2004(7):1789-1807. |
| [5] | Liu YL;Yu CH;Lai JY .Poly(tetrafluoroethylene)/polyamide thin-film composite membranes via interfacial polymerization for pervaporation dehydration on an isopropanol aqueous solution[J].Journal of Membrane Science,2008(1/2):106-115. |
| [6] | Li N.;Xu SG.;Liu ZZ. .Dynamically formed poly (vinyl alcohol) ultrafiltration membranes with good anti-fouling characteristics [Russian][J].Journal of Membrane Science,2000(1):17-28. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%