高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (1): 115.

• 研究论文 • 上一篇    下一篇

几种含有酰胺基团超滤膜吸水情况的FTIR、TGA和DSC研究

丁俊琪, 杨建灵, 丁马太, 夏海平, 何旭敏   

  1. 厦门大学化学系, 厦门 361005
  • 收稿日期:1992-01-23 修回日期:1992-05-05 出版日期:1993-01-24 发布日期:1993-01-24
  • 通讯作者: 丁俊琪
  • 基金资助:

    国家自然科学基金

Studies on the Absorbed Water in Some Amide Group Containing Ultrafiltration Membranes by FTIR, TGA and DSC

DING Jun-Qi, YANG Jian-Ling, DING Ma-Tai, XIA Hai-Ping, HE Xu-Min   

  1. Department of Chemistry, Xutmet Unversity, Xiamen, 361005
  • Received:1992-01-23 Revised:1992-05-05 Online:1993-01-24 Published:1993-01-24

摘要: 对几种超滤膜的TGA、DSC及FTIR研究表明,室温下含酰胺基的干燥膜体仍以氢键的形式结合一定数量的单分子水,同时也含有微量的二聚水和多聚水。当温度上升到40℃左右,水与膜体形成的氢键几乎完全断裂。每个酰胺基吸附水量的顺序为:聚砜酰胺>聚苯并咪唑酮>芳香聚酰胺;每种膜吸附水的绝对量顺序为芳香聚酰胺>聚砜酰胺>聚苯并咪唑酮。

关键词: 含酰胺基团高聚物, 超滤膜, 吸附水, 差示扫描量热, 热重分析, 红外光谱

Abstract: The stale of water in some ultrafiltraiion membranes with amide unit was investigated by using TGA, DSCand FTIR.Ultrafiltration membranes with amide group ran absorb water at room temperature.The absorbed water existed mostly as hydrogen bonded monomers, with a small proportion of dimers, trimers and higher oligomers, and would be almost dehydrated completely at 40℃.The amount of absorbed water per amide group varied in the order.polysulfone amide (PSA)> poly(benzimidazolone) (PBIL) > aromatic polyamide (APA), but the absolute amount of absorbed water varried in the order, APA>PSA>PBIL.

Key words: Polymer containing amide groupl, Uitrafiltration membrane, Absorbed water, TGA, DSC, FTIR

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