以聚醚胺（T-403）、4,4′-二氨基二苯醚（ODA）和3,3′,4,4′-二苯甲酮二酐（BTDA）为单体,采用A2＋B3法通过热亚胺化和化学亚胺化得到一系列超支化聚酰亚胺（HBPIs）。通过红外光谱测试（FT-IR）、热重分析测试（TGA）、溶解性测试和X射线衍射分析（XRD）对聚合物进行了结构表征和性能测试。FT-IR表明生成了预期的聚合物;TGA表明合成的超支化共聚PI随着共聚体系中芳香二胺的比例增大,其在N2中5%和10%的热失重温度也随之升高;溶解性测试表明合成的超支化聚酰胺酸具有较好的溶解性,化学亚胺化合成的HBPI溶解性良好;X射线衍射分析（XRD）表明聚合物的结晶度较低。
A series of hyper-branched polyimides were synthesized via A2＋B3 approach using 3,3′,4,4′-benzophenone tetracarboxylic dianhydride（BTDA） and 4,4′-diaminodiphenyl ether（ODA） and poly（oxyalkylene） triamine（T-403） as materials.The structure and properties of the products were characterized by Fourier transform infrared spectroscopy（FT-IR）,thermal gravimetric analysis（TGA）,X-ray diffraction（XRD） and solubility test.The chemical structure of hyper-branched copolyimides was confirmed by FT-IR spectra.The thermogravimetric curve indicates that PI′s 5% or 10% thermal decomposition temperature in N2 increases as the proportion of ODA increases;the solubility test shows that the obtained hyper-branched poly（amic acid）s and the polyimide obtained by chemical imidization are soluble in several polar aprotic solvents.XRD spectrum demonstrates that the polymers have low-order aggregation structure.
参考文献
| [1] | 杨小进,陈文求,易昌凤,徐祖顺.微波辐射四元共缩聚聚酰亚胺的合成与表征[J].高分子材料科学与工程,2009(08):12-15. |
| [2] | Jin-tian Yang,Bin Ji,Wei Huang,Yong-feng Zhou,De-yue Yan.SYNTHESIS AND CHARACTERIZATION OF ORGANSOLUBLE POLYIMIDE AND COPOLYIMIDES FROM ALICYCLIC DIANHYDRIDE[J].高分子科学（英文版）,2007(04):409-417. |
| [3] | Park SJ;Li K;Jin FL .Synthesis and characterization of hyper-branched polyimides from 2,4,6-triaminopyrimidine and dianhydrides system[J].Materials Chemistry and Physics,2008(2/3):214-219. |
| [4] | 廖学明,宋涛,余万能,屈秀宁,刘良炎,LIU Liang-ya.3,3',4,4'-二苯甲酮四酸二酐的合成及应用研究[J].化工技术与开发,2008(09):38-42. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%