The copolymers of 2

2

2-trifluoroethyl methylacrylate(TFEMA) and styrene(St) were synthesized using reversible addition-fragmentation chain transfer(RAFT) polymerization in 1

4-dioxane solution

using S-1-dodecyl-S′-(α-methyl-α′-acetic acid)trithiocarbonate as the RAFT agent and 2

2′-azobisisobutyronitrile(AIBN) as initiator.The RAFT polymerization kinetics under different reaction conditions was discussed in detail.The molecular weight and chemical structure of P(TFEMA-co-St) were characterized by GPC and FTIR

respectively.The surface property and micro-topography of P(TFEMA-co-St) films were measured by contact angle method and AFM.The relatively suitable polymerization conditions were that the ratio value of [TFEMA]/[St]/[RAFT]/[AIBN]was 200∶200 ∶2∶1

and the polymerization temperature was 75℃.The results of copolymerization kinetics showed that the copolymerization was"living" and controllable.The activation energy of this polymerization was 36.49 kJ /mol.Plots of Mn versus conversion were linear.PDI of P(St-co-TFEMA) was between 1.2 and 1.4.FTIR and 1H-NMR results proved that P(TFEMA-co-St) were obtained

and that the copolymer chain showed a gradient-chain-structure character.The P(TFEMA-co-St) films had high water contact angles and relatively low surface energy

showing fluoropolymer’s characters.The micro-phase separation structure was observed in P(TFEMA-co-St) films.