| 一种新型共聚酰亚胺的合成与表征 |
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| 引用本文： | 张毅,张清华.一种新型共聚酰亚胺的合成与表征[J].合成技术及应用,2008,23(1):31-33. |
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| 作者姓名： | 张毅 张清华 |
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| 作者单位： | 东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620 |
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| 基金项目： | 上海市启明星跟踪计划
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教育部新世纪人才计划 |
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| 摘 要： | 以3,3’-二氨基二苯砜（DDS）和4,4’-二氨基二苯醚（ODA）作为共缩聚二胺单体,与3,3’,4,4’-二苯酮四羧酸二酐（BTDA）进行缩合聚合,合成了一系列具有一定溶解性的共聚酰亚胺。采用升温红外光谱监控了聚酰胺酸热环化为聚酰亚胺的过程,对所得产物的热稳定性和力学性能进行研究,发现二胺单体的组成对共聚酰亚胺的性能产生较为明显的影响。
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| 关 键 词： | 共聚酰亚胺 可溶性 热稳定性 |
Synthesis and characterization of novel copolyimides |
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| Zhang Yi,Zhang Qinghua.Synthesis and characterization of novel copolyimides[J].Synthetic Technology and Application,2008,23(1):31-33. |
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| Authors: | Zhang Yi Zhang Qinghua |
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| Affiliation: | Zhang Yi, Zhang Qinghua ( State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China) |
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| Abstract: | A series of soluble copolyimides were synthesized by reacting 3,3'4,4'-benzophenonetetracarboxylic di- anhydride(BTDA)with various molar ratios of 3,3'-sulfonyldianiline(DDS)and 4,4'-oxydianiline(ODA)in N,N- dimethylacetamide.The transformation from poly(amic acid)(PAA)to polyimide via thermal imidization was monitored using in situ fourier transform infrared spectra(FTIR).The diamine composition of DDS/ODA has an influence on the thermal stability and mechanical properties.The increase of ODA in the copolymer results in a high decomposition tem- perature and the improvement of mechanical properties.The solubility of the copolyimides was discussed. |
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| Keywords: | copolyimide solubility thermal stability |
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