Colorless polyimides derived from adamantane-containing diamines
文献类型：期刊论文
| 作者 | Miao, Jie; Hu, Xiaofan; Wang, Xianwei; Meng, Xiangsheng; Wang, Zhen; Yan, Jingling |
| 刊名 | POLYMER CHEMISTRY
 |
| 出版日期 | 2020 |
| 卷号 | 11期号:37页码:6009-6016 |
| 关键词 | LOW DIELECTRIC-CONSTANT TRANS-1,4-CYCLOHEXANE UNIT TRANSPORT-PROPERTIES LOW-CTE LOW-K DIANHYDRIDE |
| DOI | 10.1039/d0py01016b |
| 英文摘要 | In this study, three adamantane-containing diamines,i.e.1,3-bis(4-aminophenyl) adamantane (ADMDA), 1,3-bis(3,5-dimethyl-4-aminophenyl) adamantane (DMADMDA) and 1,3-bis(fluoro-aminophenyl) adamantane (FADMDA), were successfully synthesized by Friedel-Crafts alkylation reactions between 1-adamantanol and acetanilide or its analogues, followed by hydrolysis with aqueous NaOH solution. Three regio-isomers were formed in the case of FADMDA due to the occurrence of bothpara- andortho-alkylation (relative to the amino groups). Three series of semi-alicyclic polyimides were subsequently produced through a conventional one-step solution polycondensation between the as-developed diamines and commercial dianhydrides. The properties of the synthesized polyimides were characterized with respect to their thermal, mechanical and optical properties. The adamantane-containing polyimides exhibited significantly high glass transition temperatures (T-g) in the range 285-440 degrees C, excellent optical transparency (>80% transmittance at 400 nm) and optimal thermal and mechanical properties. The substituents in diamines significantly impacted the properties of the resulting polyimides. Specifically, the polyimides from DMADMDA demonstrated higherd-spacing, higherT(g), lower coefficient of thermal expansion (CTE), better optical properties and inferior tensile properties relative to the ADMDA-derived polymers, which could be attributed to the enhanced chain rigidity and reduced inter- and intra-molecular interactions associated with the two bulky methyl groups. In contrast, the FADMDA-derived polymers exhibited lowerd-spacing, lowerT(g), higher CTE, higher tensile modulus and lower elongation at break than the ADMDA-based ones, due to the reduced chain linearity regularity caused by theortho-alkylated isomers, as well as suppressed intramolecular interaction originating from the strongly electron-withdrawing fluorine atoms. The excellent comprehensive properties of the adamantane-containing polyimides render these materials promising candidates for a variety of optical and optoelectronic applications. |
| 学科主题 | Polymer Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20434]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Yan, JL (corresponding author), Chinese Acad Sci, Changchun Inst Appl Chem, Changchun 130022, Peoples R China. 2.Meng, XS 3.Yan, JL (corresponding author), Chinese Acad Sci, Ningbo Inst Ind Technol, Ningbo 315201, Peoples R China. 4.Wang, Z 5.Wang, Z (corresponding author), Univ Sci & Technol China, Coll Appl Chem & Engn, Hefei 230026, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Miao, Jie,Hu, Xiaofan,Wang, Xianwei,et al. Colorless polyimides derived from adamantane-containing diamines[J]. POLYMER CHEMISTRY,2020,11(37):6009-6016. |
| APA | Miao, Jie,Hu, Xiaofan,Wang, Xianwei,Meng, Xiangsheng,Wang, Zhen,&Yan, Jingling.(2020).Colorless polyimides derived from adamantane-containing diamines.POLYMER CHEMISTRY,11(37),6009-6016. |
| MLA | Miao, Jie,et al."Colorless polyimides derived from adamantane-containing diamines".POLYMER CHEMISTRY 11.37(2020):6009-6016. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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