| Surface Modification of Nano－SiO2 by Grafting PMMA／PBA |
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| 引用本文： | 宇海银,顾家山,关明云,吴正翠,孙益民,杜俊.Surface Modification of Nano－SiO2 by Grafting PMMA／PBA[J].中国化学,2003,21(10):1297-1299. |
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| 作者姓名： | 宇海银 顾家山 关明云 吴正翠 孙益民 杜俊 |
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| 作者单位： | CollegeofChemistryandMaterialsScience,AnhuiNormalUniversity,Wuhu,Anhui241000,China |
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| 摘 要： | The surface of nano-SiO2 was modified by being encapsulated with hydroxy-propyl-methyl cellulose (HPMC), and then co-grafted with acrylates. The grafting conditions, such as pH of the medium, and initiator concentration have been studied. The modified nano-SiO2 particles were characterized by TEM, DSC and FT-IR spectra. TEM images show that the surface of the nano-particles has been successfully modified by a thick layer of film-like polymer in this way. The DSC results show that the decomposition temperature of modified nano-particles of SIO2 is 90 ℃ higher than that of grafted-on polymer. According to the FT-IR spectra, It is convinced that poly-methyl methacrylate ( PMMA ) and poly-acrylic butyl-ester ( PBA ) were co-grafted onto the surface of nano-SiO2.
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| 关 键 词： | 表面改性 纳米二氧化硅 SiO2 嫁接法 PMMA／PBA 接技共聚物 羟基丙基甲基纤维素 聚甲基异丁烯酸酯 聚丙烯酸丁基醚 |
Surface modification of nano‐SiO2 by grafting PMMA/PBA |
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| Hai‐Yin Yu,Jia‐Shan Gu,Ming‐Yun Guan,Zheng‐Cui Wu,Yi‐Min Sun,Jun Du.Surface modification of nano‐SiO2 by grafting PMMA/PBA[J].Chinese Journal of Chemistry,2003,21(10):1297-1299. |
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| Authors: | Hai‐Yin Yu Jia‐Shan Gu Ming‐Yun Guan Zheng‐Cui Wu Yi‐Min Sun Jun Du |
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| Abstract: | The surface of nano‐SiO2 was modified by being encapsulated with hydroxy‐propyl‐methyl cellulose (HPMC), and then cografted with acrylates. The grafting conditions, such as pH of the medium, and initiator concentration have been studied. The modified nano‐SiO2 particles were characterized by TEM, DSC and FT‐IR spectra. TEM images show that the surface of the nano‐particles has been successfully modified by a thick layer of film‐like polymer in this way. The DSC results show that the decomposition temperature of modified nano‐particles of SiO2 is 90 °C higher than that of grafted‐on polymer. According to the FT‐IR spectra, it is convinced that poly‐methyl methacrylate (PMMA) and poly‐acrylic butyl‐ester (PBA) were co‐grafted onto the surface of nano‐SiO2. |
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| Keywords: | hydroxy‐propyl‐methyl cellulose nano‐SiO2 particle surface modification co‐graft polymerization |
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