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 |
| 卷号 | 41期号:21页码:3249-3260 |
| 关键词 | BIPHENYLTETRACARBOXYLIC DIANHYDRIDES UNSYMMETRICAL DIAMINE AROMATIC POLYIMIDES SOLUBLE POLYIMIDES THERMAL-PROPERTIES |
| ISSN号 | 0887-624x |
| 通讯作者 | ding mx |
| 中文摘要 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000185967500007 |
| 公开日期 | 2010-09-13 |
| 源URL | [http://202.98.16.49/handle/322003/18081]  |
| 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 | 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：长春应用化学研究所
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