二氢月桂烯醇型三硅氧烷表面活性剂的合成及性能

Synthesis and Properties of Dihydromyrcenol-type Trisiloxane Surfactants

摘要:

在自制的Pt-聚甲基乙烯基硅氧烷(PMVS)催化剂作用下，1,1,1,3,5,5,5-七甲基三硅氧烷与二氢月桂烯醇型聚醚在甲苯中经硅氢加成合成系列三硅氧烷表面活性剂(Sxy)。通过FT-IR和1H-NMR验证了Sxy系列产物的结构，并测试了产物的表面与界面性能，与市售三硅氧烷表面活性剂BD-3077进行比较。结果表明，Sxy可将水的表面张力降低至23 mN/m以下，略高于BD-3077(21 mN/m)；质量分数为0.5%的S36、S39和S312溶液在室温下澄清，浊点高于85 ℃；Sxy均具有优良的水解稳定性，远优于BD-3077。

Abstract:

A series of dihydromyrcenol-type trisiloxane surfactants(Sxy) were synthesized by hydrosilylation from 1,1,1,3,5,5,5-Heptamethyltrisiloxane and dihydromyrcenol-polyether catalyzed by Pt-PMVS. The structures of the products were characterized by means of FT-IR and 1H-NMR. We studied their surface and interface properties, compared with the marketing available trisiloxane surfactant BD-3077. The results showed that Sxy could reduce the surface tension of water down to 23 mN/m, a little higher than BD-3077(21 mN/m). The cloud point of S36, S39 and S312 solution(mass fraction 0.5%) were higher than 85 ℃. Sxy showed better stability in hydrolysis resistant experiments than BD-3077.