Preparation of Poly(p-phenylene Benzobisoxazole) by High Temperature Thermal Treatment of Isopropoxy Functionalized Aromatic Polyamides

被引：0
作者：
Chen F. [1 ,2 ]
Gao Y. [2 ]
Gui J. [1 ]
Lü L. [1 ,2 ]
机构：
[1] Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing
[2] Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing
来源：
Binggong Xuebao/Acta Armamentarii | 2019年 / 40卷 / 09期
关键词：
Aromatic polyimide; High-performance fiber; Poly(p-phenylene benzobisoxazole); Precursor; Thermal treatment;
D O I：
10.3969/j.issn.1000-1093.2019.09.016
中图分类号：
学科分类号：
摘要：
4, 6-diamino-1, 3-dihydroxy-benzene (DAR) used as monomer for the synthesis of high-performance poly (p-phenylene benzobisoxazole) (PBO) is easily oxidized and difficultly synthesized by traditional method, and the polymerization process is complicated and the spinning operation is also difficult. A novel method was developed to synthesize PBO by high temperature thermal treatment of isopropoxy functionalized aromatic polyamide, which was prepared by polycondensation of 4, 6-diisopropoxy-1, 3-diamine-benzene and terephthalic chloride. And the obtained PBO exhibits excellent thermal degradation temperature up to 562℃. The proposed method is used to avoid DAR by replacement of the more stable monomer as 4, 6-diisopropoxy-1, 3-diamine-benzene, greatly simplify the polymerization process for the improved solubility of monomer and polymer, and easily spin the obtained PBO precursor into nanofibers. © 2019, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1911 / 1917
页数：6
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