Living Copolymerization of EOVE and MOVE: Fast Flow Synthesis and Thermal Responsive Behavior

Yu-Hang He; Dan Xie; Yang-Cheng Lu

doi:10.1007/s10118-022-2739-8

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Living Copolymerization of EOVE and MOVE: Fast Flow Synthesis and Thermal Responsive Behavior

RESEARCH ARTICLE | Updated：2022-09-23

- Living Copolymerization of EOVE and MOVE: Fast Flow Synthesis and Thermal Responsive Behavior
- Chinese Journal of Polymer Science Vol. 40, Issue 10, Pages: 1193-1200(2022)
- Affiliations：
  
  State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Author bio：
  
  luyc@tsinghua.edu.cn
- Funds：
- DOI：10.1007/s10118-022-2739-8
  CLC：
- Received：27 January 2022，
  
  Revised：2022-3-16，
  
  Accepted：19 March 2022，
  
  Online First：17 June 2022，
  
  Published：01 October 2022
- Accepted：
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He, Y. H.; Xie, D.; Lu, Y. C. Living copolymerization of EOVE and MOVE: fast flow synthesis and thermal responsive behavior. Chinese J. Polym. Sci. 2022, 40, 1193–1200

Yu-Hang He, Dan Xie, Yang-Cheng Lu. Living Copolymerization of EOVE and MOVE: Fast Flow Synthesis and Thermal Responsive Behavior[J]. Chinese Journal of Polymer Science, 2022, 40(10): 1193-1200.
He, Y. H.; Xie, D.; Lu, Y. C. Living copolymerization of EOVE and MOVE: fast flow synthesis and thermal responsive behavior. Chinese J. Polym. Sci. 2022, 40, 1193–1200 DOI： 10.1007/s10118-022-2739-8.

Yu-Hang He, Dan Xie, Yang-Cheng Lu. Living Copolymerization of EOVE and MOVE: Fast Flow Synthesis and Thermal Responsive Behavior[J]. Chinese Journal of Polymer Science, 2022, 40(10): 1193-1200. DOI： 10.1007/s10118-022-2739-8.

摘要

Random and block copolymers of 2-methoxyethyl vinyl ether (MOVE) and 2-ethoxyethyl vinyl ether (EOVE) was successfully synthesized within only 180 s in microflow system. Both copolymers showed smart responses towards temperature change with random copolymer behave in a more sensitive way.

Abstract

Random and block copolymers of 2-methoxyethyl vinyl ether (MOVE) and 2-ethoxyethyl vinyl ether (EOVE) were synthesized within 180 s

via

IBVE-HCl/SnCl

initiating system in the presence of THF in a microflow system. The polymers can be produced continuously and efficiently with extremely narrow molecular weight distributions (

=1.09−1.18) even at the existence of pendant oxyethylene units. Polymerization rate can be accelerated by reducing THF to very low concentration ([THF]=50 mmol/L)

reaching conversions over 60% and 70% in 60 s for EOVE and MOVE

respectively. Random copolymers poly(MOVE

100

-EOVE

100(1−

)

) (

=0.25

0.5

0.75) experienced very sensitive phase separation process

of which phase separation temperature (

) can be adjusted between 20 and 70 °C by controlling monomer composition. On the other hand

thermally induced phase separation of diblock copolymers poly(MOVE

100

-EOVE

100

) was not so sensitive as its random copolymer counterpart. Relatively bigger difference between phase separation temperatures of heating and cooling process (Δ

) was found for diblock copolymer.

关键词

Keywords

references

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