Facile and controllable synthesis of hybrid silica nanoparticles densely grafted with poly(ethylene glycol)
文献类型：期刊论文
| 作者 | Shui, Yudan1,2; Su, Yunlan1; Kuang, Xiao1; Zhao, Weiwei1; Cai, Yuanli2; Wang, Dujin1 |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2017-10-01 |
| 卷号 | 66期号:10页码:1395-1401 |
| 关键词 | Stober Silica Nanoparticles Poly(Ethylene Glycol) Mixed Solvent Grafting Density Grafting To |
| 英文摘要 | We report that a mixture of good and poor solvents greatly enhances the grafting density of nanosized silica grafted with poly(ethylene glycol) (PEG) by the 'grafting to' method. Methoxypolyethylene glycol (MPEG) (molecular weight 750, 2000 and 4000gmol(-1)) was modified in a controlled manner to prepare epoxide terminated PEG (MPEG-EO). Silica nanoparticles were modified with N-(2-aminoethy)-3-aminopropylmethyldimethoxysilane through the silanization coupling reaction to obtain a well-defined siloxane structure. MPEG-EO was coupled to the modified silica by the reaction of their terminal groups in a mixed solvent (n-decane/toluene). The grafting density of MPEG-EO was found to be controlled by the concentration of MPEG-EO and the ratio of n-decane to toluene in the grafting system. Based on TGA, the maximum grafting density was found to be about 2.8, 1.47 and 0.76 chains nm(-2) for molecular weights of 750, 2000 and 4000, respectively, which is extremely high compared to previous reports. This high grafting density can be explained by the decreased chain dimension of PEG in the presence of the poor solvent. The method can be applied to other nanoparticles and polymers which can greatly enhance the application of SiO2 nanocomposites. (c) 2017 Society of Chemical Industry |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39300]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Jiangsu Key Lab Adv Funct Polymer Design & Applic, Suzhou 215123, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shui, Yudan,Su, Yunlan,Kuang, Xiao,et al. Facile and controllable synthesis of hybrid silica nanoparticles densely grafted with poly(ethylene glycol)[J]. POLYMER INTERNATIONAL,2017,66(10):1395-1401. |
| APA | Shui, Yudan,Su, Yunlan,Kuang, Xiao,Zhao, Weiwei,Cai, Yuanli,&Wang, Dujin.(2017).Facile and controllable synthesis of hybrid silica nanoparticles densely grafted with poly(ethylene glycol).POLYMER INTERNATIONAL,66(10),1395-1401. |
| MLA | Shui, Yudan,et al."Facile and controllable synthesis of hybrid silica nanoparticles densely grafted with poly(ethylene glycol)".POLYMER INTERNATIONAL 66.10(2017):1395-1401. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。