摘要
以氢化松香、环氧氯丙烷和三乙胺为原料,采用微波辐射法合成氢化松香基季铵盐表面活性剂。通过单因素试验研究了反应条件对酯化率的影响,并对合成产物进行结构确认及其表面性能测定。结果表明,微波辐射法合成氢化松香基季铵盐适宜反应条件为:反应时间75 min,微波功率500 W,反应温度80℃,反应物料配比1∶1∶1(物质的量比),产物酯化率为99.66%,阳离子表面活性物质量分数为82.24%。产物的临界胶束浓度(CMC)为9.83×10-4mol/L,表面张力为35.7 mN/m,乳化力为20 min,泡沫力为225 mm,泡沫稳定性为175 mm,Krafft点<0℃,亲水亲油平衡值(HLB值)为20.9。微波辐射法与常规加热法相比,反应时间比常规加热法缩短105 min。
Hydrogenated rosin-based quaternary ammonium surfactant was synthesized by means of microwave irradiation method using hydrogenated rosin, epichlorohydrin and triethylamine as raw materials. The effects of reaction conditions on esterification rate were investigated by single-factor experiment. The structure and surfactivity of synthesized product was then characterized. The results showed that the suitable synthesis reaction conditions of the titled compound were as follows ： reaction time of 75 min, microwave power of 500 W, reaction temperature of 80 ℃ and molar ratio of 1 ： 1 ： 1. The esterification rate of 99.66 % with 82.24 % cationic surface active substance was obtained. The results of the surfactivity experiment showed that the critical micelle concentration （CMC） can be low to 9.83 × 10 ^-4 mol/L, the surface tension is 35.7 mN/m and the emulsifying ability is 20 min. Foaming ability can reach 225 mm, foaming stability is 175 mm, Krafft point is less than 0 ℃ and HLB value is 20.9. The reac- tion time of microwave irradiation method can be shortened 105 min more than that by conventional heating method.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2012年第5期41-45,共5页
Chemistry and Industry of Forest Products
基金
国家自然科学基金资助项目(20976031)
广西研究生教育创新计划项目(105931003075)
广西石化资源加工及过程强化技术重点实验室主任课题基金(z015)
关键词
氢化松香
季铵盐表面活性剂
微波
合成
hydrogenated rosin
quaternary ammonium surfactants
microwave
synthesis
