【摘要】 在石油醚和NaOH溶液两相体系中,以二硫化碳、丙酮、氯仿为原料,季铵盐为相转移催化剂,合成出s,s′-二(a,a′-甲基-a′′-乙酸)三硫代碳酸酯(TTC1)。以偶氮二甲酸二乙酯、三苯基膦为催化剂,TTC1与甲基丙烯酸羟乙酯酯化反应合成TTC2。TTC2与丙烯酸丁酯、丙烯酸乙酯分别进行活性自由基聚合后得到三硫代碳酸酯类聚合物材料PBA-L和PEA-L。同时以1,6-己二醇二丙烯酸酯为交联剂分别对丙烯酸丁酯、丙烯酸乙酯进行了自由基聚合,得到聚丙烯酸丁酯(PBA)和聚丙烯酸乙酯(PEA)。用红外、紫外、核磁、元素分析、高效液相色谱、DSC等对TTC1、TTC2、PBA-L、PEA-L进行了表征。结果表明,普通自由基聚合的材料PBA、PEA无自修复功能,而通过活性自由基聚合的材料PBA-L、PEA-L具备多次自修复功能。更多还原

【Abstract】 Using carbon bisulfide,acetone and chloroform as crude material,quaternary ammonium salt as phase transfer catalyst,s,s′-bis(a,a′-dimethyl-a″-acetic acid) trithiocarbonate(TTC1) was synthesized through the reaction in the two-phase medium systhem of petroleum/NaOH solution.Using diethyl azodicarboxylate and triphenylmethane as catalysts,TTC2 was obtained through esterification of TTC1 with 2-hydroxyethy methacrylate.Coplymer PBA-L and PEA-L were synthesized by living radical polymerization of butyl methacrylate and ethyl methacrylate,using TTC2 as cross-linking agent.Simultaneously,polybutyl methacrylate(PBA) and polyethyl methacrylate(PEA) was synthesized by radical polymerization,using 1,6-hexanedioldiacrylate as cross-linking agent.TTC1,TTC2,PBA-L and PEA-L were characterized by FT-IR,UV,1HNMR,EA,HPLC and DSC.The results show that the copolymers PBA and PEA synthesized by radical polymerization don′t have self-healing function,while the copolymers PBA-L and PEA-L synthesized by living radical polymerization.更多还原