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    • Polyarylates Containing Phthalazinone Moieties with Excellent Thermal Resistance

    Pei-qi Xu,Shou-hai Zhang,Qian Liu,Kai-wen Wu,Dan-hui Wang,Zhao-qi Wang,Ze-yuan Liu,Ying-nan Zhang,Xi-gao Jian

    HIGH PERFORMANCE POLYMERS（2023）

    Dalian Univ Technol

    Cited 4|Views19
    Abstract
    Polyarylates containing phthalazinone moieties are synthesized by interfacial polymerization of 2,4-(4-hydroxyphenyl)-2,3-phthalazin-1-one with isophthaloyl dichloride (IPC) and terephthaloyl dichloride (TPC). The effects of organic solvents and phase transfer catalysts (PTC) on the intrinsic viscosity ( ηint) are systematically investigated for polymers with ηintup to 1.52 dL g−1. The polyarylate has a high ηintwith 1,2-dichloroethane and cetyltrimethylammonium bromide used as the organic phase solvent and PTC. It is found that polyarylates prepared from BPPZ with IPC and TPC have excellent thermal resistance, with glass transition temperatures of 292 and 337°C, respectively. The polyarylates exhibit excellent thermal stability with 5% mass-loss temperature above 469°C in both N2and air, and residual mass ratios at 800°C in N2and air above 54.1% and 4.0%, respectively.
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    Polyarylate,phthalazinone,interfacial polymerization,intrinsic viscosity,thermal resistance
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    【要点】：该论文合成了含有酞菁酮基团的聚芳酯，通过界面聚合反应，使用1,2-二氯乙烷和胆碱盐作为有机溶剂和相转移催化剂，提高了聚芳酯的特性粘度，表现出优异的热稳定性。
    

    【方法】：采用界面聚合反应，以2,4-(4-羟基苯基)-2,3-酞菁-1-酮、间苯二酰 dichloride (IPC) 和对苯二酰 dichloride (TPC) 为原料合成聚芳酯。
    

    【实验】：使用1,2-二氯乙烷和胆碱盐作为有机相溶剂和相转移催化剂，系统地研究了这些因素对聚芳酯特性粘度的影响。结果显示，采用这些条件得到的聚芳酯具有较高的特性粘度。此外，聚芳酯表现出优异的热稳定性，在N-2和空气中的5%质量损失温度分别为469°C以上，在800°C时的剩余质量比分别为54.1%和4.0%。