Synthesis and applications of silicone oil–soluble fluoroalkyl end‐capped cooligomers
Synthesis and applications of silicone oil–soluble fluoroalkyl end‐capped cooligomers
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DOI：
10.1002/app.21591
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发表时间：
2005-05
影响因子：
3
通讯作者：
H. Sawada;H. Horiuchi;T. Kawase;K. Oharu;H. Nakagawa;I. Kaneda
中科院分区：
文献类型：
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作者：
H. Sawada;H. Horiuchi;T. Kawase;K. Oharu;H. Nakagawa;I. Kaneda
在非常温和的条件下，将含氟烷基过氧化氢的聚二甲基硅氧烷和聚氧乙烯链段与含有相应链段的甲基丙烯酸酯单体和共聚单体如二甲基丙烯酰胺和丙烯酰吗啉进行冷却聚合，合成了含氟烷基末端封端的冷却剂。这些含氟冷却剂具有两亲性，可溶于水和普通有机溶剂。特别值得注意的是，含有聚氧乙烯单元的端氟烷基冷却剂不仅可溶于聚(甲基苯基硅氧烷)(硅油)，还可溶于水，包括除正己烷外的常见有机溶剂。此外，这些氟化冷却剂能够相当有效地将水和间二甲苯的表面张力分别降低到约15和20 mN/m的水平。在这些含氟冷却剂中，含有聚氧乙烯链段的含氟烷基末端的丙烯酰吗啉冷却剂是一种适用于水和硅油的新型乳化剂。
Fluoroalkyl end-capped cooligomers containing polydimethylsiloxane and polyoxyethylene segments were prepared under very mild conditions by the cooligomerizations of fluoroalkanoyl peroxides with methacrylate monomers containing the corresponding segments and comonomers such as dimethylacrylamide and acryloylmorpholine. These obtained fluorinated cooligomers exhibited amphipathic characteristics and became soluble in water and common organic solvents. In particular interest, fluoroalkyl end-capped cooligomers containing polyoxyethylene units were soluble not only in poly(methylphenylsiloxane) (silicone oil) but also in water, including common organic solvents except for hexane. Additionally, these fluorinated cooligomers were able to reduce the surface tension of water and m-xylene quite effectively, to around 15 and 20 mN/m levels, respectively. In these fluorinated cooligomers, fluoroalkyl end-capped acryloylmorpholine cooligomers containing polyoxyethylene segments were applicable as a novel emulsifying agent against water and silicone oil.