Synthesis of Fluorine-containing Functionalized Polyolefin Block Copolymers by A Tandem Strategy Combining Polyhomologation of Ylides with Thermally/Light Induced Degenerative Iodine Transfer Polymerization
Fang XU, He-ying WANG, Kun CUI, Jin HUANG, Qiao-ling ZHAO, Tao JIANG, Zhi MA. Synthesis of Fluorine-containing Functionalized Polyolefin Block Copolymers by A Tandem Strategy Combining Polyhomologation of Ylides with Thermally/Light Induced Degenerative Iodine Transfer Polymerization[J]. Polymer Bulletin, 2021,34(6):104-113.
Fang XU, He-ying WANG, Kun CUI, Jin HUANG, Qiao-ling ZHAO, Tao JIANG, Zhi MA. Synthesis of Fluorine-containing Functionalized Polyolefin Block Copolymers by A Tandem Strategy Combining Polyhomologation of Ylides with Thermally/Light Induced Degenerative Iodine Transfer Polymerization[J]. Polymer Bulletin, 2021,34(6):104-113. DOI: 10.14028/j.cnki.1003-3726.2021.06.010.
New iodo-terminated polyolefin based macroinitiators were synthesized for the first time by one-pot method combining polyhomologation of ylides and post functionalization. Then
well-defined polymethylene-b-poly(2
3
4
5
6- pentafluoro styrene) with terminal bi-allyl groups (BA-PM
1
-
b
-P(PFSt) (
M
n
NMR
=10500 and 14600g/mol
Fluorine content=13.5wt% and 20.8wt%))
polymethylene-
b
-poly(styrene-
co
-2
3
4
5
6-pentafluoro styrene) with terminal biallyl groups (BA-PM
2
-
b
-P(St-
co
-PFSt)) (
M
n
GPC
=5200~7130kg/mol
Fluorine content=1.8wt% ~5.4wt%) were achieved efficiently via thermally/light induced degenerative iodine transfer polymerization in the presence of Mn
2
(CO)
10
. The chain structures of the obtained copolymers were characterized by
1
H-NMR
19
F-NMR
GPC and elemental analysis. In addition
the BA-PM2-
b
-P(St-
co
-PFSt)
3
porous films with average pore sizes of 5.0~1.5m m were fabricated via a static breath-figure process at 25℃ under 95% relative humidity with different copolymer concentration of 1
5 and 10mg/ mL
respectively.
关键词
叶立德同源聚合碘端基聚烯烃大分子引发剂热/光诱导退化碘转移聚合含氟嵌段聚合物多孔薄膜
Keywords
Polyhomologation of ylidesIodo-terminated polyolefin macroinitiatorThermally/light induced degenerative iodine transfer polymerizationFluorine-containing block copolymerPorous films