基于丁香酚的双(三)官能度生物基单体的合成及聚合反应

Synthesis and Polymerization of Bi- and Tri-Functional Monomers Based on Eugenol

基于丁香酚(Eug)设计合成了双、三官能度的生物基单体,并考察了它们之间的聚合反应。以丁香酚和双异氰酸酯为原料,通过氨酯化反应制备了中间含有氨酯键、两端含有双键的生物基单体(Eug-HDI);以丁香酚和三聚氯氰为原料合成了三官能度的单体(TEU);并将Eug-HDI与TEU通过烯烃复分解反应按比例共聚,得到了一系列共聚产物。通过红外光谱、核磁共振氢谱、凝胶渗透色谱及差示扫描量热分析等对聚合物的结构和性能进行了表征和分析。结果表明,从Eug出发制备Eug-HDI和TEU单体的产率均可达到89%;Eug-HDI与TEU共聚时的活性远低于其各自均聚时的活性;玻璃化转变温度(T_g)随共聚物的比例不同而呈现显著差异。

Based on eugenol(Eug),biologic monomers with two and three function-groups were synthesized and their polymerization reactions were investigated.Using eugenol and diisocyanate as raw material,a biological monomer(EUG-HDI)containing ammonia ester bonds in the middle and double bonds at both ends was prepared via ammoniesterification.A trifunctional monomer(TEU)was synthesized with eugenol and melamine chloride.Eug-HDI and TEU were proportionally copolymerized via olefin metathesis to obtain a series of copolymerized products.The structure and properties of the polymers were characterized and analyzed by FT-IR,1H-NMR,GPC and DSC.The results show that the yields of euG-HDI and TEU monomers can reach 89%from Eug.The copolymerization activity of euGHDI with TEU is much lower than that of their respective homo-polymerization.The glass transition temperature(Tg)significantly varies with the different copolymerization proportions.