首页> 外文会议>Annual International Waterborne, High-Solids, Powder Coatings Symposium >NOVEL SYNTHESIS of F-CONTAINING COLLOIDAL DISPERSIONS and FILM FORMATION via SELF ASSEMBLY and INTERFACIAL STRATIFICATION
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NOVEL SYNTHESIS of F-CONTAINING COLLOIDAL DISPERSIONS and FILM FORMATION via SELF ASSEMBLY and INTERFACIAL STRATIFICATION

机译:通过自组装和界面分层进行含F含胶体分散体和膜形成的新颖合成

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These studies focus on the behavior of fluorosurfactants containing hydrophobic and ionic entities in the presence of methyl methacrylate/n-butyl acrylate (MMA/nBA) colloidal dispersions stabilized by sodium dodecyl sulfate (SDS) as well as on the synthesis of stable colloidal particles containing MMA/nBA and heptadecafluorodecyl methacrylate (FMA). The presence of flurosurfactants significantly changes the mobility of SDS in MMA/nBA films and alters morphological features of the film-air (F-A) interfaces of films. Depending upon the chemical structure of the flourosurfactant, spherical islands and rod-like morphologies can be formed which also alter the surface kinetic coefficient of friction of films by at least three orders of magnitude. Dual hydrophobic tails and an anionic head appears to have the largest effect on the decreased surface friction. A combination of F-containing surfactants and monomers also allows successful synthesis of stable methyl methacrylate/n-butyl acrylate/heptadecafluorodecyl methacrylate (MMA/ nBA/FMA) colloidal dispersions which is accomplished by using a dual-tail anionic fluorosurfactant which facilitates the synthesis of MMA/nBA/FMA through a low-sheer monomer-starved emulsion polymerization process. As a result, significant enhancements of mechanical and chemical film properties are achieved.
机译:这些研究重点是含有疏水性和离子实体在甲基丙烯酸甲酯/正丁酯(MMA / NBA)胶体分散体存在下含有疏水性和离子实体的含氟活性剂(MMA / NBA)胶体分散体以及含有稳定的胶体颗粒的合成MMA / NBA和甲基丙烯酸甲酯(FMA)。氟睾膏剂的存在显着改变了MMA / NBA膜中SDS的迁移率,并改变了薄膜 - 空气(F-A)界面的形态特征。取决于粉状胶质剂的化学结构,可以形成球形岛和棒状形态,其也将薄膜的表面动力学系数改变至少三个数量级。双疏水性尾部和阴离子头似乎对表面摩擦降低的影响最大。含F的表面活性剂和单体的组合还允许成功合成通过使用双尾阴离子氟菌剂的甲基丙烯酸甲基丙烯酸甲酯/正丁酯/丙烯酸正丁酯/庚二氟二烷基甲基丙烯酸甲酯(MMA / NBA / FMA)胶体分散体。 MMA / NBA / FMA通过低薄层单体饥饿的乳液聚合方法。结果,实现了机械和化学膜性能的显着增强。

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