Order-disorder transition in eicosylated polyethyleneimine comblike polymers
文献类型：期刊论文
| 作者 | Shi, Haifeng; Zhao, Ying; Jiang, Shichun; Xin, John H.; Rottstegge, Joerg; Xu, Duanfu; Wang, Dujin |
| 刊名 | POLYMER
 |
| 出版日期 | 2007-04-24 |
| 卷号 | 48期号:9页码:2762-2767 |
| 关键词 | Order-disorder Transition Eicosylated Polyethyleneimine Comblike Polymer |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2007.03.012 |
| 英文摘要 | Order-disorder transition (ODT) behavior in eicosylated polyethyleneimine (PEI20C) comblike polymer obtained by grafting n-eicosyl group on polyethyleneimine backbone was systematically investigated by the combination of differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), Fourier transform infrared (FTIR) spectroscopy as well as solid-state high resolution nuclear magnetic resonance (NMR) spectroscopy. DSC investigations showed two obvious transitions, assigned to the transitions (1) from orthorhombic to hexagonal and (2) from hexagonal to amorphous phase, respectively. These transitions are induced by the variations of alkyl side chain conformation and packing structure with temperature changing, which consequently lead to the destruction of original phase equilibrium. The ODT behavior can also be confirmed by spectroscopic methods like WAXD, FTIR and NMR. The ordered structure and the transition behavior of the alkyl side chains confined by the PEI backbone are obviously different from those of pristine normal alkanes. The transition mechanism of ODT and the origin of the phase transition behavior in PEI20C comblike polymer were discussed in detail in this paper. (c) 2007 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000246329300038 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62039]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Dujin |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijng Natl Lab Mol Sci, CAS Lab Engn Plast,Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China 2.Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Haifeng,Zhao, Ying,Jiang, Shichun,et al. Order-disorder transition in eicosylated polyethyleneimine comblike polymers[J]. POLYMER,2007,48(9):2762-2767. |
| APA | Shi, Haifeng.,Zhao, Ying.,Jiang, Shichun.,Xin, John H..,Rottstegge, Joerg.,...&Wang, Dujin.(2007).Order-disorder transition in eicosylated polyethyleneimine comblike polymers.POLYMER,48(9),2762-2767. |
| MLA | Shi, Haifeng,et al."Order-disorder transition in eicosylated polyethyleneimine comblike polymers".POLYMER 48.9(2007):2762-2767. |
入库方式： OAI收割
来源：化学研究所
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