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将氨丙基三乙氧基硅烷化学键合于玻璃片表面,与α-溴代异丁酰溴进行酰胺化反应制备表面引发剂。以甲基丙烯酸甲酯,苯乙烯和γ-甲基丙烯酰氧基丙基三甲氧基硅烷为单体,在玻璃表面引发原子转移自由基聚合反应(SI-ATRP)。衰减全反射傅立叶变换红外光谱(ATR/FT-IR),X-射线光电子能谱(XPS)显示PMMA、PS和PS/KH570共聚物(Poly(St-co-KH570))都接枝到玻璃片表面。凝胶渗透色谱(GPC)数据表明游离PMMA与PS的数均分子量随反应时间增加而增大,且分子量分布系数较低。接触角测试表明,改性后玻璃的表面疏水性得到一定程度改善,当KH570体积含量为80%时,水接触角增大到92.5°。
The aminopropyl triethoxysilane chemically bonded to the glass surface, and α-bromoisobutyryl bromide amidation reaction preparation of surface initiator. Atom transfer radical polymerization (SI-ATRP) was initiated on the glass surface with methyl methacrylate, styrene and γ-methacryloxypropyltrimethoxysilane. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR / FT-IR) and X-ray photoelectron spectroscopy (XPS) showed that both PMMA, PS and PS / KH570 copolymers surface. Gel permeation chromatography (GPC) data show that the number average molecular weight of free PMMA and PS increases with increasing reaction time and the molecular weight distribution coefficient is low. The contact angle test showed that the surface hydrophobicity of modified glass was improved to some extent. When the volume content of KH570 was 80%, the contact angle of water increased to 92.5 °.