Preparation of poly(N-isopropylacrylamide) brush grafted silica particles via surface-initiated atom transfer radical polymerization used for aqueous chromatography
文献类型：期刊论文
| 作者 | Liu, Zong-Jian1; Liang, Yan-Li1; Geng, Fang-Fang1; Lv, Fang1; Dai, Rong-Ji1; Zhang, Yu-Kui1,2; Deng, Yu-Lin1 |
| 刊名 | frontiers of materials science
 |
| 出版日期 | 2012-03-01 |
| 卷号 | 6期号:1页码:60-68 |
| 关键词 | poly(N-isopropylacrylamide) (PNIPAAm) atom transfer radical polymerization (ATRP) temperature-responsive chromatography separation |
| 英文摘要 | thermoresponsive poly(n-isopropylacrylamide) (pnipaam) brushes were densely grafted onto silica surface via surface- initiated atom transfer radical polymerization (si-atrp). the grafting reaction started from the surfaces of 2-bromoisobutyrate functionalized silica particles in 2-propanol aqueous solution at ambient temperature using cucl/ cucl2/n, n, n', n', n''-pentamethyldiethylenetriamine (pmdeta) as the catalytic system. based on thermogravimetric analysis (tga) results, the grafting amount and grafting density of pnipam chains on the surface of silica were calculated to be 1.29 mg/ m(2) and 0.0215 chains/ nm(2), respectively. the gel permeation chromatography (gpc) result showed the relatively narrow molecular weight distribution (m-w/ m-n= 1.21) of the grafted pnipaam. the modified silica particles were applied as high- performance liquid chromatography (hplc) packing materials to successfully separate three aromatic compounds using water as mobile phase by changing column temperature. temperature-dependent hydrophilic/hydrophobic property alteration of pnipaam brushes grafted on silica particles was determined with chromatographic interaction between stationary phase and analytes. retention time was prolonged and resolution was improved with increasing temperature. baseline separation with high resolution at relatively low temperatures was observed, demonstrating dense pnipaam brushes were grafted on silica surfaces. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | materials science, multidisciplinary |
| 研究领域[WOS] | materials science |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000208935800004 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142960]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Beijing Inst Technol, Sch Life Sci, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zong-Jian,Liang, Yan-Li,Geng, Fang-Fang,et al. Preparation of poly(N-isopropylacrylamide) brush grafted silica particles via surface-initiated atom transfer radical polymerization used for aqueous chromatography[J]. frontiers of materials science,2012,6(1):60-68. |
| APA | Liu, Zong-Jian.,Liang, Yan-Li.,Geng, Fang-Fang.,Lv, Fang.,Dai, Rong-Ji.,...&Deng, Yu-Lin.(2012).Preparation of poly(N-isopropylacrylamide) brush grafted silica particles via surface-initiated atom transfer radical polymerization used for aqueous chromatography.frontiers of materials science,6(1),60-68. |
| MLA | Liu, Zong-Jian,et al."Preparation of poly(N-isopropylacrylamide) brush grafted silica particles via surface-initiated atom transfer radical polymerization used for aqueous chromatography".frontiers of materials science 6.1(2012):60-68. |
入库方式： OAI收割
来源：大连化学物理研究所
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。