聚(3，3，3-三氟丙基)甲基／N-β-氨乙基-γ-氨丙基甲基硅氧烷的合成及其构筑的超疏水织物

Sysnthesis of poly-tri(fluoropropyl)methyl/N-β-aminoethyl-γ-aminopropylmethyl polysiloxane and superhydrophobic cotton textiles fabricated from It

以KOH为催化剂,实现了1,3,5-三甲基-1,3,5-三(3,3,3-氟丙基)环三硅氧烷(DF3)和N-β-氨乙基-γ-氨丙基甲基二甲氧基硅烷(APAEDMS)的本体聚合,得到了侧链含(3,3,3-三氟丙基)和N-β-氨乙基-γ-氨丙基的聚甲基硅氧烷(FASO),并以其为低能物质,结合凝胶-溶胶法将普通棉织物构筑为接触角为156°的超疏水织物。红外光谱(IR)和核磁共振(1 H-NMR)分析表明FASO具有预期的化学结构,处理前后织物表面SEM和疏水性分析表明:织物自身具有的微米尺度二维粗糙度和FASO修饰所形成的低能表面是织物变疏水的主要原因,纳米SiO2在纤维束表面构建的纳米尺度粗糙度,可将水在纤维-水接触面间所占分率由34.7%降低到10%,接触角由134.5°提高到156°。最后,用X-射线光电子能谱(XPS)对超疏水织物的表面成分进行了分析。

Using potassium hydroxide as catalyst, a new fluoro-silicone copolymer FASO was synthesized by bulk polymerization of 1,3,5-tris（trifluoropropylmethyl） cyclotrisiloxane（DF3 ） with β- aminoethyl-γ-aminopropyl dimethoxysilane （APAEDMS）, and fabricated a superhydrophobic cotton textile with contact angle of 156° using FASO as low surface ener- gy materials and sol-gel modified method. The chemical structure of the FASO was characterized by IR and1 H-NMR. SEM and hydrophohic analysis of the treated cotton textile indicated two-dimensional micro-scale roughness of the textile and the hydrophobic films of FASO were the reasons why cotton fabric changed from hydrophilicity to hydrophohicity, Nano parti- cles formed by silica sol can decreasing the water area rates on water/textile/air surface from 34. 7% to 10%, increased the contact angle from 134. 5% to 156%. Finally, the chemical composition of treated textile surface was confirmed by X-ray pho- toelectron spectroscopy（XPS）.