Preparation of high temperature resistant polycarbonate via ionic liquid activation of bisphenol fluorene under mild conditions

IF 1.8 4区化学 Q3 POLYMER SCIENCE

High Performance Polymers Pub Date : 2023-12-30 DOI:10.1177/09540083231225290

Huanhuan Gao, Xiaozhou Zhang, X. Jian, Jinyan Wang

引用次数: 0

Abstract

In this study, the melt polycondensation reaction of 9,9’- bis(4-hydroxyphenyl)fluoride (BHPF) and diphenyl carbonate (DPC) was catalyzed using three ionic liquids (ILs) and a conventional alkali metal as catalysts. The optimal IL catalysts were determined to be [BMmim][BF4] ionic liquid catalysts, and the catalytic mechanism was investigated. Furthermore, the optimum process conditions were identified: the optimal amount of [BMmim][BF4] was 0.05 mol% based on DPC, the polycondensation temperature was set at 200°C for a duration of 3 h, followed by polymerization at 280°C for another 3 h. As a result, the Mn value of poly(9,9-bis(4-hydroxyphenyl) carbonate) (PFC) reached up to 41387 g/mol with a glass transition temperature band of approximately 254°C and Td-5% value of around 436°C.

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在温和条件下通过离子液体活化双酚芴制备耐高温聚碳酸酯

本研究以三种离子液体（IL）和一种传统碱金属为催化剂，催化了 9,9'-双（4-羟基苯基）氟化物（BHPF）和碳酸二苯酯（DPC）的熔融缩聚反应。确定最佳离子液体催化剂为[BMmim][BF4]离子液体催化剂，并研究了催化机理。此外，还确定了最佳工艺条件：[BMmim][BF4] 的最佳用量为 DPC 的 0.05 摩尔%，缩聚温度设定为 200 摄氏度，持续 3 小时，然后在 280 摄氏度下再聚合 3 小时。结果，聚（9,9-双（4-羟基苯基）碳酸酯）（PFC）的 Mn 值高达 41387 克/摩尔，玻璃化转变温度带约为 254 摄氏度，Td-5% 值约为 436 摄氏度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Performance Polymers 化学-高分子科学

CiteScore

4.20

自引率

14.30%

发文量

106

审稿时长

1.2 months

期刊介绍： Health Services Management Research (HSMR) is an authoritative international peer-reviewed journal which publishes theoretically and empirically rigorous research on questions of enduring interest to health-care organizations and systems throughout the world. Examining the real issues confronting health services management, it provides an independent view and cutting edge evidence-based research to guide policy-making and management decision-making. HSMR aims to be a forum serving an international community of academics and researchers on the one hand and healthcare managers, executives, policymakers and clinicians and all health professionals on the other. HSMR wants to make a substantial contribution to both research and managerial practice, with particular emphasis placed on publishing studies which offer actionable findings and on promoting knowledge mobilisation toward theoretical advances. All papers are expected to be of interest and relevance to an international audience. HSMR aims at enhance communication between academics and practitioners concerned with developing, implementing, and analysing health management issues, reforms and innovations primarily in European health systems and in all countries with developed health systems. Papers can report research undertaken in a single country, but they need to locate and explain their findings in an international context, and in international literature.