玻璃表面铜-胺氧化还原引发自由基接枝聚合  

CuSO4-AMINE REDOX-INITIATED GRAFT POLYMERIZATION FROM GLASS SUBSTRATE SURFACES

作　　者：陈肖博[1] 翟光群[1,2] 

机构地区：[1]常州大学材料科学与工程系,常州213164 [2]常州一品堂化学有限公司,常州213164

出　　处：《高分子学报》2012年第11期1295-1306,共12页Acta Polymerica Sinica

基　　金：常州市应用基础研究计划(项目号CJ20115008)资助项目

摘　　要：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.Amino-terminated glass surface was prepared by coupling 3-aminopropyltriethoxysilane, and the CuE＋-amino redox system was designed to initiate the radical polymerization of the electron-deficient monomers,such as N,N-dimethylacrylamide） in aqueous solutions. The results from attenuated total reflection- Fourier transform infrared spectroscopy, contact angle measurements, atomic force microscopy and X-ray photoelectron spectroscopy confirmed the formation of the glass substrate grafted with functional polymer chains. As there was no free polymer chains formed in the reaction mixtures, our approach provided a facile strategy for the preparation of organic/inorganic hybrid materials. The amount of materials m （ CuSO4 ） ： m（DMAAm）： m（H20） = 5： 1000：1000 should be selected, 80~C should be selected as the suitable temperature,and 4 h should be selected as the suitable reaction time. The weight gain ratio and specific graft yield of Glassxn.550-g-PDMAAm were 0. 342% and 0.47 mg/cm2. The results showed that chemical composition and microstructure on the glass surface changed obviously, and the effect of graft polymerization was very distinct.

关 键 词：水溶性单体 玻璃 铜-胺氧化还原引发 表面接枝聚合 杂化材料 

分 类 号：O631.5[理学—高分子化学]