高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (3): 275.

• 研究论文 • 上一篇    下一篇

用1H NMR方法研究聚砜-聚脂类嵌段共聚物的组成和序列分布

丁有骏, 陈琦, 潘景歧   

  1. 北京大学化学系
  • 收稿日期:1984-10-27 出版日期:1986-03-24 发布日期:1986-03-24

The Determination of Composition and Sequence Distribution in Polysulfone-Polyesters Block Copolymers by 1H NMR

Ding Youjun, Chen Qi, Pan Jingqi   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1984-10-27 Online:1986-03-24 Published:1986-03-24

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摘要： 本文测定了一系列聚矾-聚酯嵌段共聚物的高分辨核磁共振谱,研究了共聚物的组成和序列分布,山1HNMR谱图的峰面积算出了共聚物的无规度(B)及数均序列长度(L),B值均在O<B<1范围内又一次证明共聚物系嵌段共聚物,其结构是由聚酯链段封端的多嵌段结构,研究结果还表明:反应条件、加碱量及加碱时间、加料方式等对B均有影响,尤以加料方式影响极大,B值还与起始的投料比及二元醇的结构有关。

Abstract: High resolution NMRspectra of several kinds of Polysulfone-Polyesters(PSF-PPT, PSF-PBT, PSF-PHT, PSF-PDET, PSF-PTET) block copolymers were measured.The composition and sequence distribution of Polysulfonc-Polyesters block copolymers were studied. Proton signals due to helerolinkages could be observed in these block copolymers, and the average sequence length (L) and the degree of Randomness (B) in the Polysulfone-Polyesters block copolymers were calculated from the intensities of their signals.Bof block copolymers lie in the region of 0<B<1.

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