Phenylethynyl-endcapped oligomides with low melt viscosities and high T(g)s: effects of the molecular weights
文献类型：期刊论文
| 作者 | Su, Cao-ning; Ji, Mian; Fan, Lin; Yang, Shi-yong |
| 刊名 | HIGH PERFORMANCE POLYMERS
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 23期号:5页码:352-361 |
| 关键词 | Oligomides Melt Viscosity Thermal Stability Mechanical Property |
| ISSN号 | 0954-0083 |
| DOI | 10.1177/0954008311410997 |
| 英文摘要 | Phenylethynyl-endcapped imideoligomers (oligomides) with low melt viscosities and high glass transition temperatures (T-g) were prepared by the high temperature polycondensation of 2,3,30,4'-biphenyltetracarboxcylic anhydride (a-BPDA), 4,4'-methylenebis(2,6-dimethylaniline) (MBDA) and 4-phenylethynyl-phthalic anhydride (4-PEPA). Experimental results indicated that the oligomides were mixtures of biphenylethynyl-endcapped imide oligomers with different degrees of polymerization (DP = 0, 1, 2, 3, 4), corresponding to the molecular weights (M-n) of 737 to 2787 determined by MALDI-TOF. The melt viscosities of the oligomide were reduced by lowering the calculated molecular weight (Calc'd M-n). The thermally cured polyimide neat resins showed glass transition temperatures (T-g) of > 400 degrees C and 5% weight loss temperature (T-5) of > 499 degrees C. It was also found that the mechanical properties of the thermally cured polyimide neat resins were dependent on the Calc'd M-n values of the oligomide, and improved gradually with increasing Calc'd Mn. |
| 语种 | 英语 |
| WOS记录号 | WOS:000295076100002 |
| 出版者 | SAGE PUBLICATIONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72497]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, Shi-yong |
| 作者单位 | Chinese Acad Sci, Lab Adv Polymer Mat, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Cao-ning,Ji, Mian,Fan, Lin,et al. Phenylethynyl-endcapped oligomides with low melt viscosities and high T(g)s: effects of the molecular weights[J]. HIGH PERFORMANCE POLYMERS,2011,23(5):352-361. |
| APA | Su, Cao-ning,Ji, Mian,Fan, Lin,&Yang, Shi-yong.(2011).Phenylethynyl-endcapped oligomides with low melt viscosities and high T(g)s: effects of the molecular weights.HIGH PERFORMANCE POLYMERS,23(5),352-361. |
| MLA | Su, Cao-ning,et al."Phenylethynyl-endcapped oligomides with low melt viscosities and high T(g)s: effects of the molecular weights".HIGH PERFORMANCE POLYMERS 23.5(2011):352-361. |
入库方式： OAI收割
来源：化学研究所
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