The macromolecules chain transfer agent was synthesized by using styrene (St) as monomer and 2-cyanoprop-2-yl1-dithionaphthalate (CPDN) as RAFT agent. The different block ratio of copolymers P(St-
b
-A171) were synthesized by dvinyltrimethoxysilane (A171) and macromolecules chain transfer agent. The structure of block copolymer was characterized by
1
H NMR
gel permeation chromatography GPC
dynamic mechanical analysis (DMA) and other methods. The results showed that the number-average molecular weight of block polymer was increased from 10400 to 14000 and PDI index increased from 1.42 to 1.58 as the block ratio of
n
St
/
n
A171
increased from 1:0.15 to 1:0.45. The contact angle of block polymer film was increased from 78.4° to 89.6°. Through the analysis above
the
n
St
/
n
A171
block ratio have great influence on the performance of P (St-
b
-A171).
关键词
苯乙烯链转移剂乙烯基三甲氧基硅烷嵌段共聚物
Keywords
StyreneChain transfer agentVinyltrimethoxysilaneBlock copolymers