高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (6): 943.

• 研究简报 • 上一篇    

联苯二酐型聚酰亚胺的透气性能与分子结构关系的研究

李悦生1, 丁孟贤2, 徐纪平2   

  1. 1. 浙江大学高分子科学与工程研究所, 杭州, 310027;
    2. 中国科学院长春应用化学研究所
  • 收稿日期:1993-06-07 修回日期:1993-09-30 出版日期:1994-06-24 发布日期:1994-06-24
  • 通讯作者: 李悦生,男,33岁,博士后.
  • 作者简介:李悦生,男,33岁,博士后.
  • 基金资助:

    国家自然科学基金

Structure/Permeability Rdlationship of BPDA-based Polyimides

LI Yue-Sheng1, DING Meng-Xian2, XU Ji-Ping2   

  1. 1. Institute of Polymer Science and Engineering, Zhejiang Univerrsity, Hangzhou, 310027;
    2. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1993-06-07 Revised:1993-09-30 Online:1994-06-24 Published:1994-06-24

关键词: 聚酰亚胺, 膜, 气体分离, 透气性, 透气选择性

Abstract: Aseries of BPDA-based polyimldes from 4, 4'-oxyl dianiline and 4, 4'-methane dianiline derivatives was prepared by a conventional procedure.Gas permeabilities and permselectivitis of 7 homoand copolyimides for gas pairs H2/N2 and O2/N2 have been measured at the temperature from ambient up to 150℃.The permeability and permselectivity of BPDA-based polyimides are dominantly controlled by free volume. BPDA-DMMDAand BPDA-TMMDAhave higher permselectivity compared with BPDA-3MPDA/ODAand BPDA-4MPDA/ODA.BPDA-DMMDAand BPDA-TMMDAwith higher permeability and permselectivity are favorablegas separation membrane materials.

Key words: Polyetherimide, Membrane, Gas separation, Permeability, Permselectivity

TrendMD: