氟硅氧烷共聚低表面能杂化材料的研究

Synthesis and surface properties of low surface energy fluorosilicone copolymers

通过溶液聚合和溶胶-凝胶法复合工艺,采用甲基丙烯酸十二氟庚酯(FA)为含氟单体、乙烯基三乙氧基硅烷(VTES)为硅单体和正硅酸乙酯(TEOS)为无机相前驱体直接合成了一种分子级复合,最外层含氟侧链定向于空气,中间层是碳碳主链,底层为硅氧网络结构的氟硅氧烷共聚低表面能杂化材料。结果表明,溶剂含量对含氟侧链向表面的迁移速度以及材料疏水性能有着非常重要的影响。

The fluorosilieone eopolymers possessed fluorinated side chains as top layer, hydrocarbon backbone chain as interlayer and SiO2 network as bottom layer, were prepared by free-radical random eopolymerization and sol-gel process using Dodeeafluoroheptyl methyl acrylate as fluorine-containing monomer, vinyltriethoxy si- lane as silicone-containing monomers and tetraethyl orthosilieate as chemical precursor. The effect of solvent contents on the surface structure and surface wettability of the fluorosilieone eopolymers were investigated by FTIR, XPS and contact angle measurement. It have been demonstrated that the fluorosilieone eopolymers ex- hibited the high hydrophobieity properties. It have been also found that solvent concentration have a wignifieant influence on the mobility of perfluoroalkyl side chain and the wettability behaviour.