文献类型：期刊文献

中文题名：松香基超支化聚酯的合成及性能研究

英文题名：Synthesis and Properties of Rosin Based Hyperbranched Polyester

作者：张海波[1,2,3,4] 陈玉湘[1,2,3,4,5] 赵振东[1,2,3,4,5] 卢言菊[1,2,3,4,5] 毕良武[1,2,3,4,5] 李冬梅[1,2,3,4]

第一作者：张海波

通信作者：Chen, Yu-Xiang

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]中国林业科学研究院林业新技术研究所

年份：2015

卷号：35

期号：2

起止页码：62-66

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;EI(收录号：20151900826710);Scopus(收录号：2-s2.0-84929467717);北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金资助项目(31070518)

语种：中文

中文关键词：马来海松酸;松香基超支化聚酯;端乙烯基超支化聚酯;紫外光固化

外文关键词：maleopimaric acid;rosin based hyperbranched polyester;terminal-vinyl hyperbranched polyester; UV curing

分类号：TQ351

摘要：以马来海松酸(MPA)、三羟甲基丙烷(TMP)、丙三醇共聚合成了松香基超支化聚酯(HBP),在醇酸物质的量之比3∶1的条件下,探讨了反应温度、物料配比、催化剂对反应的影响;用甲基丙烯酸对HBP进行改性得到UV固化端乙烯基松香基超支化聚酯(VHBP),采用FT-IR、GPC、DSC、TG对HBP及VHBP进行分析表征。结果表明:当甘油与三羟甲基丙烷物质的量之比为1∶1,反应温度220℃,催化剂用量为0.2%时,多分散系数(PDI)较小,为最佳反应条件。FT-IR分析表明HBP中含有大量酯基和羟基,反应得到超支化聚酯,数均分子质量(Mn)为2 308,热失重为50%时温度为402℃,玻璃化转变温度(Tg)为42.9℃,特性黏度为2.11 m L/g。FT-IR分析表明VHBP中出现乙烯基特征峰,热失重为50%时温度为379℃,Tg为-31.78℃,特性黏度为1.1 m L/g。并且,超支化聚酯改性前后均具有较好的溶解性能。对VHBP紫外光固化膜性能分析表明:固化膜具有较好的柔韧性、耐水性、耐醇性和耐碱性,耐冲击性>50 kg/cm,附着力为1级,铅笔硬度为3H,凝胶率85%。
A rosin based hyperbranched polyester （HBP） was prepared by copolycondensation of maleopimaric acid （MPA）, trimethylolpropane（TMP） , and glycerin. When the mole ratio of alcohol to acid was 3 ： 1, the effects of reaction temperature, material ratios, and catalyst contents on the hyperbranched polyester synthesis were discussed. The results showed that the optimal conditions were as follows： the mole ratio of glycerin to TMP 1 ： 1, the dosage of catalyst 0.2% , reaction temperature 220 ℃. Under these conditions, the polydispersity index （PDI） was small. The structure and performance of the polyester was characterized by FT-IR, GPC, DSC, and TG. The results showed that HBP contained a large number of ester and hydroxyl groups ; the number average molecular weight was 2 308 ; the temperature with thermal weight loss of 50% was 402 ℃ ; the glass transition temperature（Tg） was 42.9℃; the intrinsic viscosity was 2. 11 mL/g. When the polymer was further modified by methacrylic acid, the obtained hyperbranched polyester contained terminal vinyl groups（VHBP）. The structure and performance of VHBP was characterized by FT-IR, DSC, and TG. The results showed that VHBP contained terminal vinyl groups; the temperature of 50% thermal weight loss was 379 ℃ ; the Tg was - 31.78 ℃ ; the intrinsic viscosity was 1.1 mL/g. HBP and VHBP had good solubility. The UV-cured film of VHBP had good flexibility and resistance to water, alcohol, and alkali. And the adhesion force was 1 grade; the impact resistance was over 50 kg/cm; gel rate was 85% ; film hardness by pencil was 3H.