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以脱氢枞酸为原料,经酰氯化反应后与己二醇反应合成脱氢枞酸羟己酯,然后再用甲基丙烯酰氯进行酯化反应,合成基于脱氢枞酸的柔性单体——脱氢枞酸(2-甲基丙烯酰氧基己基)酯,得率41%。并分别采用了FT-IR、1H NMR、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(2-甲基丙烯酰氧基己基)酯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-21.82℃。
Dehydroabietic acid is taken as raw material, the hydroxyhexyl dehydroabietic acid ester is synthesized through the reaction of the acid chloride and hexanediol, and then esterified with methacryloyl chloride to synthesize the dehydroabietic acid-based flexible monomer - Dehydroabietic acid (2-methacryloyloxyhexyl) ester, 41% yield. Their structures and properties were characterized by FT-IR, 1H NMR, 13C NMR, DSC and GPC. The results show that dehydroabietic acid (2-methacryloyloxyhexyl) ester can undergo polymerization reaction in the presence of initiator, the relative molecular mass of homopolymer is 20 000 ~ 30 000, the glass transition temperature is about -21.82 ° C.