Polyimides from isomeric oxydiphthalic anhydrides
文献类型：期刊论文
| 作者 | Li, QX; Fang, XZ; Wang, Z; Gao, LX; Ding, MX |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2003-11-01 |
| 卷号 | 41期号:21页码:3249-3260 |
| 关键词 | Oxydiphthalic Dianhydride Isomer/isomerization Polyimides Melt Processability Structure-property Relations |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.10918 |
| 英文摘要 | 2,2',3,3'-Oxydiphthalic dianhydride (2,2',3,3'-ODPA) and 2,3,3',4'-ODPA were synthesized from 3-chlorophthalic anhydride with 2,3-xylenol and 3,4-xylenol, respectively. Their structures were determined via single-crystal X-ray diffraction. A series of polyimides derived from isomeric ODPAs with several diamines were prepared in dimethylacetamide (DMAc) with the conventional two-step method. Matrix-assisted laser desorption/ionization time-of-flight spectra showed that the polymerization of 2,2',3,3'-ODPA with 4,4'-oxydianiline (ODA) has a greater trend to form cyclic oligomers than that of 2,3,3',4'-ODPA. Both 2,2',3,3'-ODPA and 2,3,3',4'-ODPA based polyimides have good solubility in polar aprotic solvents such as DMAc, dimethylformamide, and N-methylpyrrolidone. The 5% weight-loss temperatures of all polyimides were obtained near 500 degreesC in air. Their glass-transition temperatures measured by dynamic mechanical thermal analysis or differential scanning calorimetry decreased according to the order of polyimides on the basis of 2,2',3,3'-ODPA, 2,3,3',4'-ODPA, and 3,3',4,4'-ODPA. The wide-angle X-ray diffraction of all polyimide films from isomeric ODPAs and ODA showed some certain extent of crystallization after stretching. Rheological properties revealed that polyimide (2,3,3',4'-ODPA/ODA) has a comparatively lower melt viscosity than its isomers, which indicated its better melt processability. (C) 2003 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000185967500007 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/80701]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ding, MX |
| 作者单位 | 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 | Li, QX,Fang, XZ,Wang, Z,et al. Polyimides from isomeric oxydiphthalic anhydrides[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2003,41(21):3249-3260. |
| APA | Li, QX,Fang, XZ,Wang, Z,Gao, LX,&Ding, MX.(2003).Polyimides from isomeric oxydiphthalic anhydrides.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,41(21),3249-3260. |
| MLA | Li, QX,et al."Polyimides from isomeric oxydiphthalic anhydrides".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 41.21(2003):3249-3260. |
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。