EFFECT OF ALKYLATION DEGREE ON THE STRUCTURE OF N-OCTADECYLATED POLYETHYLENEIMINE COMB-LIKE POLYMERS
文献类型：期刊论文
| 作者 | Shi, Hai-feng1,2; Yin, Yi-ping1; Zhangi, Xing-xiang1; Wang, Du-jin2 |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2013-01-20 |
| 期号 | 1页码:56-62 |
| 关键词 | Comb-like Polymer Polyethyleneimine Crystallization Side Alkyl Groups |
| ISSN号 | 1000-3304 |
| DOI | 10.3724/SP.J.1105.2013.12136 |
| 英文摘要 | N-octadecylated polyethyleneimine (PEI18C) comb-like polymers with different substitution degrees (DS) ranging from 47% similar to 17.6% have been successfully fabricated through alkylation technique. The structure, crystallization behavior and thermal stability of PEI18C comb-like polymers with different DS had been systemically characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and thermogravimetric analysis (TGA), and also the effect of DS on the side-chain crystallization and the critical crystallization phenomenon of C18 side groups grafted along PEI backbone were also deeply investigated. The results show that the degree of crystallinity and the number of crystallizable carbon atoms in the C18 side chains of PEI18C comb-like polymers decreased from 54% to 20.3%, and from 11.4 to 4.3, respectively, with the DS decreasing from 47% to 17.6%. In the meantime, the packing mode of confined C18 side groups along PEI molecules display the same manner regardless of the variation of DS, and C18 side groups also take the hexagonally packed structure. The results further demonstrated that the degree of substitution of side alkyl groups or the dispersion density of side groups along polymeric backbones also acts as an important role in the aspect of controlling the side-chain crystallization and the critical crystallization behavior of comb-like polymer, besides the lengthscale of side alkyl chains and the rigidity of polymeric main chains. And, the crystallization behavior and thermal stability of comb-like polymers with different DS are further discussed from the viewpoint of side-chain crystallization. |
| 语种 | 英语 |
| WOS记录号 | WOS:000314263500009 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54773]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shi, Hai-feng |
| 作者单位 | 1.Tianjin Polytech Univ, State Key Lab Hollow Fiber Membrane Sci & Proc, Tianjin Key Lab Fiber Modificat & Funct Fiber, Inst Funct Fiber, Tianjin 300387, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Hai-feng,Yin, Yi-ping,Zhangi, Xing-xiang,et al. EFFECT OF ALKYLATION DEGREE ON THE STRUCTURE OF N-OCTADECYLATED POLYETHYLENEIMINE COMB-LIKE POLYMERS[J]. ACTA POLYMERICA SINICA,2013(1):56-62. |
| APA | Shi, Hai-feng,Yin, Yi-ping,Zhangi, Xing-xiang,&Wang, Du-jin.(2013).EFFECT OF ALKYLATION DEGREE ON THE STRUCTURE OF N-OCTADECYLATED POLYETHYLENEIMINE COMB-LIKE POLYMERS.ACTA POLYMERICA SINICA(1),56-62. |
| MLA | Shi, Hai-feng,et al."EFFECT OF ALKYLATION DEGREE ON THE STRUCTURE OF N-OCTADECYLATED POLYETHYLENEIMINE COMB-LIKE POLYMERS".ACTA POLYMERICA SINICA .1(2013):56-62. |
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。