Abstract: Tung oil anhydrides(TM2 and TM3)were synthesized through the Diels-Alder reaction of tung oil and maleic anhydride(MA). The TM3 reacted with 2-hydroxyethyl methacrylate(HEMA)at different ratios forming tung oil ester, the rest anhydride hydrolyzed to yield tung oil derivatives with 3～6 carboxyl groups. The obtained products were characterized by FTIR and ¹H NMR. The CMC value and surface tension of the tung oil base derivatives were measured by conductivity. The emulsifying performance of sodium carboxylate for acrylic monomers and oligomers was evaluated. The results showed that the hydrophilic of derivatives and the CMC values were increased with the increase of sodium carboxylate group of derivative, and then the emulsifying ability enhanced. The acrylate modified tung oil derivatives and their composite were UV curable. The cured film with excellent water resistance can be obtained through the tuning the formula of UV curable composite.

Key words: biomass, tung oil, multi-head emulsifier, synthesis, emulsion, UV curable, sustainability

摘要： 桐油和马来酸酐经Diels-Alder反应形成桐油二酸酐（TM2）、桐油三酸酐（TM3），桐油三酸酐与不同比例的甲基丙烯酸β羟乙酯（HEMA）反应，将桐油三酸酐及其与HEMA反应物中的酸酐官能团水解，合成出含3~6个羧基官能团丙烯酸酯改性的桐油衍生物。产物结构经红外光谱和核磁共振氢谱表征。测定了桐油基衍生物钠盐的表面张力及CMC值，考察了改性桐油基乳化剂对丙烯酸酯类单体及低聚物的乳化性能。结果表明，随着桐油基衍生物中的羧酸钠基团的增加，衍生物的亲水性增强，CMC值呈上升趋势，乳化性能增强。丙烯酸酯改性桐油基衍生物及其复配物可以光固化，可以通过调节光固化体系的组分得到耐水性很好的光固化膜。

关键词: 生物质, 桐油, 多子乳化剂, 合成, 乳液, 紫外光固化, 可持续性