A fluoride-containing organic silane was synthesized by the reaction of N-ethyl- N-hydroxy-etbyl perfluorinated octyl sulfonamide （EHPOS）, N-（β-aminoethyl）-γ-aminopropyl trimethoxy silane （ATS） and cis-butened...A fluoride-containing organic silane was synthesized by the reaction of N-ethyl- N-hydroxy-etbyl perfluorinated octyl sulfonamide （EHPOS）, N-（β-aminoethyl）-γ-aminopropyl trimethoxy silane （ATS） and cis-butenedioic anhydride （CA）. The experimental results show that the yield of product is up to 87% when the molar ratio ofEHPOS ： CA ： ATS is 1 ： 1.05 ： 1.1. EHPOS and CA were maintained at 115 ℃ for 3 hours, then after cooling the reaction solution to 75 ℃, ATS was added and reacted for another 3.5 hours at 145 ℃. The structure of the product and thermal properties were characterized by Fourier transform infrared （FTIR） and thermogravimetric analysis （TGA）, respectively. Results show that fluoride-containing organic silane has excellent thermal stability below 185℃.展开更多
Monodisperse emulsion copolymer was synthesized by semi-continuous core-shell emulsion polymerization of styrene, butyl acrylate and γ-methacryloxypropyl trimethoxy silane（KH570）. The emulsion particles size and it...Monodisperse emulsion copolymer was synthesized by semi-continuous core-shell emulsion polymerization of styrene, butyl acrylate and γ-methacryloxypropyl trimethoxy silane（KH570）. The emulsion particles size and its polydispersion were measured by dynamic light scattering（DLS）. The properties of emulsion copolymer were characterized by differential scanning calorimetry（DSC）, thermogravimetric analysis（TGA） and measurement of contact angle. The particle morphology was observed under a transmission electron microscope（TEM） and atomic force microscopy（AFM）. The results indicate that emulsion nanoparticles containing silicon possess core-shell structures and narrow polydispersity（PDI≤0.08）. The thermal stability and hydrophobicity of emulsion copolymer were improved with KH570 introduced into the system.展开更多
基金Funded by the Military Defense Project (No. 200701HX03)
文摘A fluoride-containing organic silane was synthesized by the reaction of N-ethyl- N-hydroxy-etbyl perfluorinated octyl sulfonamide （EHPOS）, N-（β-aminoethyl）-γ-aminopropyl trimethoxy silane （ATS） and cis-butenedioic anhydride （CA）. The experimental results show that the yield of product is up to 87% when the molar ratio ofEHPOS ： CA ： ATS is 1 ： 1.05 ： 1.1. EHPOS and CA were maintained at 115 ℃ for 3 hours, then after cooling the reaction solution to 75 ℃, ATS was added and reacted for another 3.5 hours at 145 ℃. The structure of the product and thermal properties were characterized by Fourier transform infrared （FTIR） and thermogravimetric analysis （TGA）, respectively. Results show that fluoride-containing organic silane has excellent thermal stability below 185℃.
基金Supported by the National Natural Science Foundation of China（No.51203105）, the China Postdoctoral Science Foundation （No.2014M551602）, the Jiangsu Provincial Industrial Support Program, China（No.BE2014821）, the Jiangsu Postdoctoral Science Foundation, China（No.1401083B） and the Research Prospective Study of Jiangsu Province, China（Nos.BY2014037-05, BY2015027-10, BY2015027-22）.
文摘Monodisperse emulsion copolymer was synthesized by semi-continuous core-shell emulsion polymerization of styrene, butyl acrylate and γ-methacryloxypropyl trimethoxy silane（KH570）. The emulsion particles size and its polydispersion were measured by dynamic light scattering（DLS）. The properties of emulsion copolymer were characterized by differential scanning calorimetry（DSC）, thermogravimetric analysis（TGA） and measurement of contact angle. The particle morphology was observed under a transmission electron microscope（TEM） and atomic force microscopy（AFM）. The results indicate that emulsion nanoparticles containing silicon possess core-shell structures and narrow polydispersity（PDI≤0.08）. The thermal stability and hydrophobicity of emulsion copolymer were improved with KH570 introduced into the system.
