乙烯基醚与七元环硫羰内酯阳离子杂化共聚研究

杨鹏; 熊雨; 卢宗斌; 洪春雁; 张泽; 尤业字

doi:10.11777/j.issn1000-3304.2024.24001

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乙烯基醚与七元环硫羰内酯阳离子杂化共聚研究

研究论文 | 更新时间：2024-09-20

- 乙烯基醚与七元环硫羰内酯阳离子杂化共聚研究
- Cationic Hybrid Copolymerization of Vinyl Ether and Seven-membered Thionolactone
- 高分子学报 2024年55卷第5期页码：594-603
- 作者机构：
  
  中国科学技术大学化学与材料科学学院合肥 230026
- 作者简介：
  
  E-mail: zze320@ustc.edu.cn
  yzyou@ustc.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 ┣52322301;22131010);22071232┫;安徽省高校协同创新项目(GXXT-2023-035)
- DOI：10.11777/j.issn1000-3304.2024.24001
  中图分类号：
- 纸质出版日期：2024-05-20，
  
  网络出版日期：2024-03-11，
  
  收稿日期：2024-01-06，
  
  录用日期：2024-01-31
- 稿件说明：
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杨鹏, 熊雨, 卢宗斌, 洪春雁, 张泽, 尤业字. 乙烯基醚与七元环硫羰内酯阳离子杂化共聚研究. 高分子学报, 2024, 55(5), 594-603

Yang, P.; Xiong, Y.; Lu, Z. B.; Hong, C. Y. ; Zhang, Z.; You, Y. Z. Cationic hybrid copolymerization of vinyl ether and seven-membered thionolactone. Acta Polymerica Sinica, 2024, 55(5), 594-603
杨鹏, 熊雨, 卢宗斌, 洪春雁, 张泽, 尤业字. 乙烯基醚与七元环硫羰内酯阳离子杂化共聚研究. 高分子学报, 2024, 55(5), 594-603 DOI： 10.11777/j.issn1000-3304.2024.24001.

Yang, P.; Xiong, Y.; Lu, Z. B.; Hong, C. Y. ; Zhang, Z.; You, Y. Z. Cationic hybrid copolymerization of vinyl ether and seven-membered thionolactone. Acta Polymerica Sinica, 2024, 55(5), 594-603 DOI： 10.11777/j.issn1000-3304.2024.24001.

摘要

报道了七元环联苯连接的硫羰内酯(DOT)的阳离子开环聚合，得到了一种

达到98 ℃的新型聚硫酯高分子. 随后对DOT与乙烯基醚的阳离子共聚进行探索，系统研究了催化剂等对DOT与异丁基乙烯基醚共聚的影响. 并基于阳离子聚合型链转移试剂的调控，成功构建了DOT和异丁基乙烯基醚的可控阳离子杂化共聚，制备了一种新型聚乙烯基醚-聚硫酯嵌段共聚物(数均分子量7.6~8.0 kg/mol，PDI

1.40). 研究结果为发展杂化共聚新方法和制备新型共聚物材料提供了设计思路.

Abstract

Designing novel copolymerization methods for preparing new copolymers is of significance to synthesize high-value polymer materials. Vinyl and heterocyclic compounds are the most important types of monomers in polymer chemistry

but the controlled copolymerization of the two is a great challenge due to the distinct polymerization mechanisms and reactive centers

which limits the development and application of new copolymer materials. Based on the thionolactone monomers which are studied widely

the cationic ring-opening polymerization of a seven-membered biphenyl-fused thionolactone (DOT)

via

using common cationic catalyst BF

·Et

O was studied. The structure of this newly synthesized polythioester was confirmed using

H nuclear magnetic resonance (

H-NMR) and

C-NMR. Differential scanning calorimeter method (DSC) and thermogravimetric analysis (TGA) indicated that the polythioester exhibits good thermal stability and a high

(98 ℃). Subsequently

cationic hybrid copolymerization of DOT and vinyl ether was explored. According to the effects of three types of cationic catalysts on the copolymerization of DOT and isobutyl vinyl ether (IBVE) without a chain transfer reagent (CTA)

trifluoromethanesulfonic acid (CF

H) was selected for further investigation. Subsequently

with the use of a scalable and green cationic CTA and the catalyst CF

the controlled cationic hybrid copolymerization of DOT and IBVE was developed

producing a new poly(vinyl ether)-block-poly(thioester) copolymer (

=7.6-8.0 kg/mol

PDI

1.40). The block structure of the polymer was further confirmed by diffusion ordered spectroscopy (DOSY) NMR. This study provides design ideas for the development of new methods of hybrid copolymerization and the preparation of new copolymer materials.

关键词

阳离子杂化聚合硫羰内酯乙烯基醚

Keywords

CationicHybrid polymerizationThionolactoneVinyl ether

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