有机硅树枝状表面活性剂的制备及性能
Preparation and properties of a dendritic silicone surfactants
顾忠飞 1陈洪龄1
作者信息
- 1. 南京工业大学化工学院,江苏 南京 211800
- 折叠
摘要
以季戊四醇(PETP)、烯丙基缩水甘油醚(AGE)、七甲基三硅氧烷(MDHM)为原料,通过环氧开环和硅氢加成反应,合成出一种树枝状非离子表面活性剂AGE-PETP-MDHM.通过傅里叶红外光谱仪(FT-IR)对产物进行结构表征,并在25℃下测试产物的表面张力、铺展性能、乳化性能、消抑泡性能、增溶性能及其对聚醚表面活性剂溶液流变性的影响.结果表明:AGE-PETP-MDHM的临界胶束浓度(cmc)为1.08×10-4 mol/L,可降低水的最低表面张力至22.67 mN/m,接触角在石蜡表面由53.81°降至43.81°,乳化性能较差,具有不错的消抑泡性能和增溶能力,对聚醚表面活性剂溶液的降黏率可达到35.45%.
Abstract
A dendritic silicone nonionic surfactant AGE-PETP-MDH M was prepared from pentaerythritol(PETP),allyl glycidyl ether(AGE)and heptamethyltrisiloxane(MDH M)by epoxy ring opening and hydrosi-lylation reaction.The structure of the product was characterized by Fourier infrared spectrometer(FT-IR).The surface tension,spreading properties,emulsification properties,defoaming properties,solubilization proper-ties and rheological effects on polyether surfactant solution were investigated at 25 ℃.Results showed that the critical micelle concentration(cmc)of AGE-PETP-MDH M was 1.08×10-4 mol/L,the minimum surface tension of water could be reduced to 22.67 mN/m,the contact angle on the paraffin surface was reduced from 53.81° to 43.81°,the emulsification performance was poor,but it had good defoaming performance and solubilization ability,and the viscosity reduction rate of polyether surfactant solution could reach 35.45%.
关键词
季戊四醇/烯丙基缩水甘油醚/七甲基三硅氧烷/环氧开环/硅氢加成Key words
pentaerythritol/allyl glycidyl ether/heptamethyltrisiloxane/epoxy ringing/hydrosilylation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据