Chain Conformation and Local Rigidity of Soluble Polyimides(II): Isomerized Polyimides in THF
文献类型：期刊论文
| 作者 | Liu GH ; Qiu XP ; Bo SQ ; Ji XL |
| 刊名 | chemical research in chinese universities
 |
| 出版日期 | 2012 |
| 卷号 | 28期号:2页码:329-333 |
| 关键词 | LASER-LIGHT-SCATTERING FLUORINE-CONTAINING POLYIMIDES DILUTE-SOLUTION INTRINSIC-VISCOSITY MOLECULAR-WEIGHT POLYMERS PARAMETERS |
| ISSN号 | 1005-9040 |
| 通讯作者 | bo sq |
| 中文摘要 | 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. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000303369900034 |
| 公开日期 | 2013-10-09 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48862]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu GH,Qiu XP,Bo SQ,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 GH,Qiu XP,Bo SQ,&Ji XL.(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 GH,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：长春应用化学研究所
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