State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
luyc@tsinghua.edu.cn
收稿:2022-01-27,
修回:2022-3-16,
录用:2022-3-19,
网络首发:2022-06-17,
纸质出版:2022-10-01
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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.
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.
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
4
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 (
M
w
/
M
n
=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
x
-
r
-EOVE
100(1−
x
)
) (
x
=0.25
0.5
0.75) experienced very sensitive phase separation process
of which phase separation temperature (
T
ps
) 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
-
b
-EOVE
100
) was not so sensitive as its random copolymer counterpart. Relatively bigger difference between phase separation temperatures of heating and cooling process (Δ
T
ps
) was found for diblock copolymer.
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