Chain Conformation and Local Rigidity of Soluble Polyimides(II): Isomerized Polyimides in THF
文献类型：期刊论文
| 作者 | Liu Gui-hua1,3; Qiu Xue-peng2; Bo Shu-qin1; Ji Xiang-ling1 |
| 刊名 | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
 |
| 出版日期 | 2012-03-01 |
| 卷号 | 28期号:2页码:329-333 |
| 关键词 | Isomerized Polyimide Chain Conformation Local Rigidity Wormlike Chain Persistence Length |
| ISSN号 | 1005-9040 |
| 英文摘要 | Two soluble isomerized polyimides(PIs) synthesized from 2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride(6FDA) with either 2,2'-dimethylbenzidine(2,2'-DMB) or 3,3'-DMB were investigated by means of size-exclusion chromatography coupled with multi-angle laser light scattering, a viscometer and a refractive index detector in tetrahydrofuran(THF) with tetrabutylammonium bromide(TBAB) at 35 degrees C. The corresponding parameters related to conformations a and v, evaluated from the scaling relationships [eta]=K eta Ma and R-g=KgMv, respectively, were 0.66 +/- 0.01 and 0.55 +/- 0.02 for poly(6FDA/3,3'-DMB), and 0.67 +/- 0.01 and 0.56 +/- 0.01 for poly(6FDA/2,2'-DMB), indicating a random coil conformation for both the samples in this mobile system. The persistence length l, and shift factor M-L(relative molecular weight per unit contour length) were estimated from the relationship between intrinsic viscosity and molecular weight for the wormlike cylinder model proposed by Bohdanecky. Both l(p) and M-L showed that the two PIs in THF are flexible chains and exhibit some local rigidity to some extent. |
| 语种 | 英语 |
| WOS记录号 | WOS:000303369900034 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47841]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Bo Shu-qin |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, Polymer Composite & Engn Lab, Changchun 130022, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Gui-hua,Qiu Xue-peng,Bo Shu-qin,et al. Chain Conformation and Local Rigidity of Soluble Polyimides(II): Isomerized Polyimides in THF[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2012,28(2):329-333. |
| APA | Liu Gui-hua,Qiu Xue-peng,Bo Shu-qin,&Ji Xiang-ling.(2012).Chain Conformation and Local Rigidity of Soluble Polyimides(II): Isomerized Polyimides in THF.CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,28(2),329-333. |
| MLA | Liu Gui-hua,et al."Chain Conformation and Local Rigidity of Soluble Polyimides(II): Isomerized Polyimides in THF".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 28.2(2012):329-333. |
入库方式： OAI收割
来源：化学研究所
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