Thioxanthene-9-thione Mediated MMA Polymerization

Xu Yan; Guan Wang; Li-Hua Zhang; Li Wang; Xiao-Fei Liu; Wan-Tai Yang

doi:10.1007/s10118-018-2140-9

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Thioxanthene-9-thione Mediated MMA Polymerization

RAPID COMMUNICATION | Updated：2021-02-18

- Thioxanthene-9-thione Mediated MMA Polymerization
- Thioxanthene-9-thione Mediated MMA Polymerization
- Chinese Journal of Polymer Science 2018年36卷第7期页码：805-810
- Affiliations：
  
  a.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical and Technology, Beijing 100029, China
  b.Beijing Laboratory of Biomedical Materials Polymer Materials, Beijing University of Chemical and Technology, Beijing 100029, China
- Author bio：
  
  yangwt@mail.buct.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 21404004, 51521062, 51221002, 51103009, and 51473015) and the Innovation and Promotion Project of Beijing University of Chemical Technology.
- DOI：10.1007/s10118-018-2140-9
  中图分类号：
- 收稿：2018-03-06，
  
  修回：2018-3-29，
  
  录用：2018-3-30，
  
  网络首发：2018-04-27，
  
  纸质出版：2018-07
- Accepted：
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Xu Yan, Guan Wang, Li-Hua Zhang, 等. Thioxanthene-9-thione Mediated MMA Polymerization[J]. Chinese Journal of Polymer Science, 2018,36(7):805-810.

Xu Yan, Guan Wang, Li-Hua Zhang, et al. Thioxanthene-9-thione Mediated MMA Polymerization[J]. Chinese Journal of Polymer Science, 2018, 36(7): 805-810.
Xu Yan, Guan Wang, Li-Hua Zhang, 等. Thioxanthene-9-thione Mediated MMA Polymerization[J]. Chinese Journal of Polymer Science, 2018,36(7):805-810. DOI： 10.1007/s10118-018-2140-9.

Xu Yan, Guan Wang, Li-Hua Zhang, et al. Thioxanthene-9-thione Mediated MMA Polymerization[J]. Chinese Journal of Polymer Science, 2018, 36(7): 805-810. DOI： 10.1007/s10118-018-2140-9.

摘要

Abstract

In the " cycloketyl radical mediated living polymerization” (CMP) process

a cycloketyl compound

9′]bixanthenyl-9

9′ diol (BIXAN) was ultilized as initiator and mediator. The cycloketyl (CK) radical was used as the dormant radical to achieve the increase of molecular weight. Herein

a series of cycloketyl thioketones were synthesised by Lawesson’s reagent by one step reaction with high yeild

and we found that

when a special cycloketyl thioketone compound

thioxanthene-9-thione (TXT)

was added to a routine radical polymerization system

TXT could capture chain radical

and simultaneously formed an radical analogous to CK radical in structure

which could trigger the growth of polymer chains. This simple system was efficient to initiate the polymerization of methyl methacrylate (MMA) and in all cases the molecular weights increased with the increase of conversions. By the end-group analysis with

H-NMR and MALDI-TOF MS

it was confirmed that the P-STXT radical was used to control the polymerization. The re-initiating reactions were achieved when PMMA was used as the macro-initiator.

关键词

Keywords

references

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