Chain transfer reactions are important side reactions in the radical polymerization of acrylates. Discrimination between interchain and intrachain transfer is still a challenge for the study of interchain transfer. A prepolymer, poly(benzyl acrylate) with hydroxy terminals (HO-PBzA), was designed and used in the reversible addition-fragmentation chain transfer (RAFT) polymerization of BzA to measure the interchain transfer degree, with benzyl N-carbazole dithiocarbamate (BCBD) as the RAFT agent. Liquid chromatography at critical conditions was used to separate and measure interchain transfer products and then BzA interchain transfer constants (C_tr) at different temperatures determined without other kinetic parameters. Experimental results showed that experimental parameters in RAFT polymerization, except the high dosage of BCBD, had no significant effects on the measured C_tr, which showed good repeatability. The C_tr of benzyl acrylate at 100–120 °C was in the order of 1−2×10⁻⁴ and the activation energy of C_tr was at 31.1 kJ·mol⁻¹.

链转移反应是丙烯酸酯自由基聚合中重要的副反应。区分链间和链内转移仍然是链间转移研究的一个挑战。设计了一种具有羟基末端的聚丙烯酸苄酯 (HO-PBzA) 预聚物，并将其用于 BzA 的可逆加成断裂链转移 (RAFT) 聚合，以测量链间转移度，与N-咔唑二硫代氨基甲酸苄酯(BCBD) ) 作为 RAFT 代理。临界条件下的液相色谱被用来分离和测量链间转移产物，然后 BzA 链间转移常数 ( C _tr) 在没有其他动力学参数的情况下确定的不同温度。实验结果表明，RAFT聚合中的实验参数，除了高剂量的BCBD外，对测得的C _tr没有显着影响，显示出良好的重复性。丙烯酸苄酯在100-120℃下的C _tr为1-2×10 ^-4，C _tr的活化能为31.1 kJ·mol ^-1。