高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (9): 1691.

• 论文 • 上一篇    下一篇

聚醚醚酮链段连接方式与其性能关系的研究

李慧1,2, 周宏伟1, 陈春海1, 吴忠文1   

  1. 1. 吉林大学麦克德尔米德实验室, 国家“八六三”计划特种工程塑料研究开发中心, 长春 130012;
    2. 中国科学院化学研究所高分子物理与化学国家重点实验室, 北京 100080
  • 收稿日期:2002-09-11 出版日期:2003-09-24 发布日期:2003-09-24
  • 通讯作者: 陈春海(1969年出生),男,博士,教授,主要从事芳杂环聚合物的研究.E-mail:cch-zhw@163.com E-mail:cch-zhw@163.com
  • 基金资助:

    国家自然科学基金(批准号:20104003);吉林大学青年基金

Studies on the Relationships Between the Connected Ways and the Properties of Poly (ether ether ketone) Copolymers

LI Hui1,2, ZHOU Hong-Wei1, CHEN Chun-Hai1, WU Zhong-Wen1   

  1. 1. Jilin University Alan G. MacDiarmid Laboratory, National [863] Plan R & D Research Center forHigh-Performance Engineering Plastics, Jilin University, Changchun 130012, China;
    2. State Key Lab of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2002-09-11 Online:2003-09-24 Published:2003-09-24

摘要: 利用亲核取代反应,通过缩聚法合成了一种新型聚芳醚酮50%交替共聚物PEDEK-PETMDEK,通过1HNMR证明其具有预期的结构.通过考察50%无规共聚物、50%交替共聚物、均聚物PEDEK和PET-MDEK的溶解性和热性能,发现聚醚醚酮共聚物的链段连接方式对聚合物性能有很大影响.50%交替共聚物是一种无定形固体,易溶于通常的有机溶剂,而50%无规共聚物却是半结晶聚合物,除浓硫酸外几乎不溶于任何溶剂;50%交替共聚物具有比50%无规共聚物更高的玻璃化转变温度.

关键词: 聚醚醚酮, 交替共聚物, 无规共聚物, 可溶性

Abstract: Anovel alternate copolymer of poly (ether ether ketone), 50% PEDEK-PETMDEK was designed and synthesized successfully by aromatic nucleophilic substitution polycondensation. The structure of the alternate copolymer was determined by 1HNMR. The properties of the 50% alternate copolymer, 50% random copolymer, homopolymer PEDEK and PETMDEK were studied by DSC and WAXD etc.. We found that solubilities and thermal properties of 50% alternate copolymer and 50% random copolymer were quite different, the former is amorphous, and could be easily dissolved in common organic solvents,while the latter is a semi-crystalline polymer and could not be dissolved in almost any solvents except con-centrated H2SO4just like the homopolymer PEDEK. The properties of 50% alternate copolymer are more like those of the homopolymer PETMDEK. The glass transition temperature of the 50% alternate copolymer is higher than that of the 50% random copolymer.

Key words: Poly (ether ether ketone)s, Alternate copolymer, Random copolymer, Solubility

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