Coil-to-rod conformational transition and single chain structure of graft copolymer by tuning the graft density
文献类型：期刊论文
| 作者 | Liu, WY ; Liu, YJ ; Zeng, GS ; Liu, RG ; Huang, Y |
| 刊名 | POLYMER
 |
| 出版日期 | 2012 |
| 卷号 | 53期号:4页码:1005 |
| 关键词 | CYLINDRICAL POLYMER BRUSHES NAOH/UREA AQUEOUS-SOLUTION ATOMIC-FORCE MICROSCOPY NECKLACE STRUCTURES PERSISTENCE LENGTH MOLECULAR BRUSHES DRUG-DELIVERY THIN-FILMS CELLULOSE POLYELECTROLYTE |
| ISSN号 | 0032-3861 |
| 通讯作者 | Liu, WY: Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat, BNLMS,Inst Chem, Beijing 100190, Peoples R China. |
| 中文摘要 | The chain conformation and individual chain structures of the graft copolymers ethyl cellulose grafting poly (acrylic acid) (EC-g-PAA) were investigated by laser light scattering (LLS) and atom force microscopy (AFM). The EC-g-PAA graft copolymers with two different side chain lengths and side chain grafting densities were synthesized via atom transfer radical polymerization (ATRP) from ethyl cellulose as the backbone. The graft copolymer molecules are adsorbed on the mica surface, and the observed single molecule structures by AFM reflect the molecular conformation in solution. An increase of the graft density of the graft copolymer induces the conformational transition due to the repulsion between side chains from coil to rod conformation. The observed disclike and rodlike single chain structures response to the coil and rod conformations, respectively. The results provide a direct visual experimental evidence of chain conformational and single chain structural transitions for graft copolymers in common solvents induced by graft density. (C) 2012 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [21104017, 20974114, 21174156]; Hunan Provincial Education Department [11C0383] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34830]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, WY,Liu, YJ,Zeng, GS,et al. Coil-to-rod conformational transition and single chain structure of graft copolymer by tuning the graft density[J]. POLYMER,2012,53(4):1005. |
| APA | Liu, WY,Liu, YJ,Zeng, GS,Liu, RG,&Huang, Y.(2012).Coil-to-rod conformational transition and single chain structure of graft copolymer by tuning the graft density.POLYMER,53(4),1005. |
| MLA | Liu, WY,et al."Coil-to-rod conformational transition and single chain structure of graft copolymer by tuning the graft density".POLYMER 53.4(2012):1005. |
入库方式： OAI收割
来源：物理研究所
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