Effect of main-chain rigidity on the phase transitional behavior of comblike polymers
文献类型：期刊论文
| 作者 | Shi, Haifeng; Zhao, Ying; Jiang, Shichun; Rottstegge, Joerg; Xin, John H.; Wang, Dujin; Xu, Duanfu |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 40期号:9页码:3198-3203 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma062531z |
| 英文摘要 | The influence of the rigidity of polymer backbones on the side-chain crystallization and phase transition behavior was systematically investigated by a combination of differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), Fourier transform infrared spectroscopy (FTIR), and high-resolution solid-state nuclear magnetic resonance spectroscopy (NMR). DSC investigation indicated that the crystallization number of alkyl carbon atoms of the side chains grafted onto the rigid polymer backbone, poly(p-benzamide) (PBA), is much lower than that of the alkyl carbon atoms of the side chains grafted onto the flexible polymer backbone, poly(ethyleneimine) (PEI), implying that the conformational state of the polymer backbones has a strong effect on the side-chain crystallization behavior in comblike polymers. WAXD and FTIR results proved that these two comblike polymers pack into hexagonal (PBA18C) and orthorhombic (PEI18C) crystals, respectively, depending on the adjusting ability of the polymer backbones for particular conformational states. It was also found that the presence of the crystalline-amorphous interphase (delta = 31.6 ppm) in PBA18C detected by solid-state C-13 NMR spectroscopy can be attributed to the rigid PBA backbone, which restricts the mobility of the alkyl side chains. The conformation effect of the polymer backbones and the packing mode variation of alkyl side chains are explicitly discussed in terms of molecular chain mobility and theory of macromolecular chain conformation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000245900200033 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62945]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shi, Haifeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Engn Plast,Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China 2.Hong Kong Polytech Univ, Fac Appl Sci & Text, 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. Effect of main-chain rigidity on the phase transitional behavior of comblike polymers[J]. MACROMOLECULES,2007,40(9):3198-3203. |
| APA | Shi, Haifeng.,Zhao, Ying.,Jiang, Shichun.,Rottstegge, Joerg.,Xin, John H..,...&Xu, Duanfu.(2007).Effect of main-chain rigidity on the phase transitional behavior of comblike polymers.MACROMOLECULES,40(9),3198-3203. |
| MLA | Shi, Haifeng,et al."Effect of main-chain rigidity on the phase transitional behavior of comblike polymers".MACROMOLECULES 40.9(2007):3198-3203. |
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。