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首页> 外文期刊>Polymers for advanced technologies >Novel synthesis of high-molecular-weight prepolymer of poly(p-phenylene benzoxazole) in ionic liquids
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Novel synthesis of high-molecular-weight prepolymer of poly(p-phenylene benzoxazole) in ionic liquids

机译：离子液体中聚（对亚苯并恶唑）高分子量预聚物的新合成

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Using ionic liquids (ILs) as the reaction solvent for the synthesis of prepolymer polyamide of poly(p-phenylene benzoxazole) (PBO) was investigated. The optimum condition of prepolymer preparation was determined in ILs. A series of 1,3-dialkylimidazolium ILs were used to be the reaction media of the polycondensation. The relationship between the molecular weight of prepolymer and the structure of ILs was analysed by changing the structure of the cation and species of anion of ILs. In order to prove the feasibility of the transformation, the prepolymer was used to prepare PBO in polyphosphoric acid media, and the conversion process was analyzed. The spinnability of the PBO solution was explored by the preparation of PBO fibers. The basic mechanical properties of PBO single fiber were tested. In a word, using 1,3-dialkylimidazolium ILs as the reaction solvents was feasible for the synthesis of high-molecular-weight PBO prepolymer, which could be a promising PBO preparation method.
机译：研究了使用离子液体（IL）作为合成聚（对苯并苯并恶唑）（PBO）的预聚物聚酰胺的反应溶剂。 在ILS中测定预聚物制剂的最佳条件。 使用一系列1,3-二烷基咪唑鎓ILS是缩聚的反应介质。 通过改变IL的阳离子和阴离子的结构，分析预聚物分子量与ILS结构之间的关系。 为了证明转化的可行性，使用预聚物在多磷酸介质中制备PbO，分析转化过程。 通过制备PbO纤维探讨了PBO溶液的可纺性。 测试了PBO单纤维的基本力学性能。 总之，使用1,3-二烷基咪唑鎓ILS作为反应溶剂可用于合成高分子量PBO预聚物，这可能是一种有前途的PBO制备方法。

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