多功能基共改性聚甲基三氟丙基硅氧烷的合成表征与膜形貌

通过聚甲基三氟丙基含氢硅氧烷与端烯丙基聚氧乙烯醚、丙烯酸十八醇酯、烯丙基缩水甘油醚的硅氢化加成反应,制备了一种十八酯基/聚醚/环氧基共改性聚甲基三氟丙基硅氧烷(PSA-PFMS)。用红外光谱(FT-IR)、核磁共振氢谱(1H-NMR)、场发射扫描电镜(FESEM)、原子力显微镜(AFM)等仪器分别对PSA-PFMS的结构、成膜形态及性能进行表征和研究。结果表明,在棉纤维和单晶硅表面,PSA-PFMS均可成膜。在单晶硅表面,可形成粗糙度大(2μm×2μm的扫描范围内,硅膜的均方粗糙度达1.197 nm)、呈微观相分离结构的疏水膜。该膜附着在纤维表面,能使处理后织物表面水的静态接触角达到129.2°。

Synthesis,Characterization and Film Morphology of Multifunctional Group co-Modified Polymethyltrifluoropropylsiloxane

A novel co-modified polymethyltrifluoropropylsiloxane grafted by a series of allylpolyoxyethylene ether,stearyl alcohol acrylic ester and allylglyeidyl ether(PSA-PFMS),was synthesized by Si-H additional reaction.Chemical structure of PSA-PFMS was characterized by infrared spectrum(IR) and proton nuclear magnetic resonance(1H-NMR).Film morphology of PSA-PFMS on silicon wafer and cotton fiber substrates were observed by atomic force microscope(AFM) and field emission scanning electron microscopy(FESEM),respectively.Results show that PSA-PFMS can form a hydrophobic polysiloxane film on both fiber and silicon wafer surfaces.PSA-PFMS film possesses quite higher roughness and phase-separated morphology in its AFM images under microanalysis(Rq,1.197 nm within the scanning 2 μm×2 μm areas).Contact angle of water on cotton fabrics treated by PSA-PFMS can reach to 129.2°.