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将3-氨基丙基三乙氧基硅烷(KH-550)固定于玻璃片表面,利用铜-胺氧化还原反应在水溶液中引发缺电子乙烯基单体,如N,N-二甲基丙烯酰胺(DMAAm)进行自由基接枝聚合.通过衰减全反射红外分析(ATR-FTIR)、接触角、原子力显微镜(AFM)和X射线光电子能谱(XPS)等方法进行表征,证明玻璃表面已接枝上功能性聚合物链,且不会产生游离均聚物.当原料配比为m(CuSO4)∶m(DMAAm)∶m(H2O)=5∶1000∶1000,反应温度为80℃,反应时间为4 h时,所得样品GlassKH-550-g-PDMAAm的接枝率与单位面积接枝量分别达到了0.342%和0.47 mg/cm2.接枝后玻璃表面化学组成和形貌都发生了显著变化.本方法操作简单、效果明显,具有一定普适性.
3-Aminopropyltriethoxysilane (KH-550) was immobilized on the surface of the glass plate and electron-deficient vinyl monomer such as N, N-dimethylacrylamide was initiated in aqueous solution by copper-amine redox reaction (DMAAm) .At the same time, ATR-FTIR, contact angle, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) Functional polymer chain, and will not produce free homopolymer.When the raw material ratio is m (DMAc): m (DMAAm): m (H2O) = 5:1000:1000, the reaction temperature is 80 ℃, the reaction time 4 h, the graft ratio and unit area grafting amount of GlassKH-550-g-PDMAAm reached 0.342% and 0.47 mg / cm 2, respectively.The chemical composition and morphology of glass surface after grafting changed significantly The method is easy to operate, the effect is obvious, and it has certain universality.