松香基甲基丙烯酸酯单体的合成和聚合活性分析

Synthesis and Characterization of (β-methacryloyloxy) Ethyl Ester of Dehydroabietic Acid

以脱氢枞酸为原料,先合成脱氢枞酸酰氯,然后再与甲基丙烯酸-β-羟基乙基酯进行酯化,合成脱氢枞酸(β-甲基丙烯酰氧基乙基)酯,纯度为99.8%。并分别采用了FT-IR、GC-MS、13C NMR,DSC和GPC对其结构和性能进行表征。研究结果表明,脱氢枞酸(β-甲基丙烯酰氧基乙基)酯是一种熔点为54.23℃的白色晶体,在引发剂的存在下可以发生聚合反应,均聚物相对分子质量为20 000～30 000,玻璃化转变温度约为73.97℃。

（β-methacryloyloxy）Ethyl ester of dehydroabietic acid （DA-2-HEMA） with a purity of 99.8 % was synthesized by the reaction of dehydroabietic chloride with hydroxyethyl acrylate and characterized by using FT-IR, GC/MS, 13C NMR , DSC and GPC. The results showed that （β-methacryloyloxy）ethyl ester of dehydroabietic acid, a type of white crystals with melting point 54.23 ℃ , can polymerize in the presence of initiator. The molecular weight of the homopolymer is about 20 000-30 000 g/mol and its glass transition temperature is 73.97℃.