氟硅非离子表面活性剂的制备及性能

doi:10.13218/j.cnki.csdc.2018.11.001

摘要/Abstract

摘要： 以含氢硅油(PMHS)、N-甲基-N-烯丙基-2-全氟-2-甲基-3-氧代己酰胺(NF2)和烯丙基聚醚(F6)为原料,在Karstedt催化剂作用下,通过硅氢加成反应制备了氟硅非离子表面活性剂PF2F6;采用FT-IR、¹H NMR和¹⁹F NMR对产物结构进行了表征,并测定了产物的溶解度、浊点、表面张力和润湿性。结果表明,PF2F6在弱极性溶剂中具有良好的溶解度,在水中的溶解度随着F6物质的量的增大而增大;当n(Si-H)∶n(NF2)∶n(F6)=2∶0.7∶1.3时,临界胶束浓度(cmc)和平衡表面张力(γ_cmc)最小,其值分别为0.13 g/L和22.8 mN/m;随着反应体系中F6物质的量的增加,PF2F6的浊点增加,而在有机玻璃(PMMA)表面的接触角减小。

关键词: 氟硅非离子表面活性剂, 硅氢加成反应, 表面张力, 浊点, 润湿性

Abstract: Hydrosilylation of poly(methylhydrosiloxane) (PMHS) with N-methyl-N-allyl-2- perfluoro-2-methyl-3-oxocaproamide (NF2) and allyl polyethylene glycol (F6) was conducted in the presence of the Karstedt catalyst in order to prepare a series of nonionic fluorosilicone surfactants (PF2F6).The structure of the products were characterized by FT-IR,¹H NMR and¹⁹F NMR.The properties of the products including solubility,cloud point,surface tension and wettability were measured.The results show that the solubility of PF2F6 in polar solvents was excellent and the solubility in water increases with the increase of the content of F6.When the molar ratio of Si-H∶NF2∶F6 is 2∶0.7∶1.3,the critical micelle concentration (cmc) and the surface tension at cmc (γ_cmc) are minimum,which are 0.13 g/L and 22.8 mN/m,respectively.The cloud point of PF2F6 increases and the contact angle on PMMA surface decreases with the increase of the content of F6 in the reaction system.

Key words: nonionic fluorosilicone surfactant, hydrosilylation, surface tension, cloud point, wettability

中图分类号:

TQ423.2

叶志刚, 占昌朝, 曹小华, 胡庆华, 谭景林. 氟硅非离子表面活性剂的制备及性能[J]. 日用化学工业, 2018, 48(11): 605-610.

YE Zhi-gang, ZHAN Chang-chao, CAO Xiao-hua, HU Qing-hua, TAN Jing-lin. Synthesis and properties of nonionic fluorosilicone surfactants[J]. China Surfactant Detergent & Cosmetics, 2018, 48(11): 605-610.

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