Chemical recycling of poly(bisphenol A carbonate): 1,5,7-Triazabicyclo [4.4.0]-dec-5-ene catalyzed alcoholysis for highly efficient bisphenol A and organic carbonate recovery
Chemical recycling of poly(bisphenol A carbonate): 1,5,7-Triazabicyclo [4.4.0]-dec-5-ene catalyzed alcoholysis for highly efficient bisphenol A and organic carbonate recovery
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DOI：
10.1016/j.polymer.2018.04.015
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发表时间：
2018-05-09
期刊：
影响因子：
4.6
通讯作者：
Kim, Jeung Gon
中科院分区：
文献类型：
--
作者：
Do, Taeyang;Baral, Ek Raj;Kim, Jeung Gon
聚（双酚A碳酸酯）的化学降解是使用易于使用的有机催化剂TBD（1，5，7-三氮杂双环[4.4.0]-癸-5-烯）实现的。由于双酚A（BPA）作为一种有效的激素干扰剂越来越受到关注，因此必须对寿命终止的聚（双酚A碳酸酯）进行适当处置，以防止BPA泄漏到生态系统中。研究了聚双酚A碳酸酯的各种催化解聚方法。在所测试的多种催化剂中，TBD表现出最好的性能。在温和的条件下，低催化剂负载量下，聚双酚A碳酸酯可定量降解为其母体原料双酚A和碳酸二甲酯。此外，为了简化反应过程，解聚被设计为不需要辅助溶剂。产物碳酸二甲酯用作溶剂，并且观察到优异的解聚。辅助溶剂的缺乏减少了进入分离过程的化学组分的数量。也证明了与其他醇的醇解。以聚碳酸酯树脂为原料，成功地合成了一系列高附加值的有机碳酸酯。(C)2018爱思唯尔有限公司版权所有
Chemical degradation of poly (bisphenol A carbonate) is achieved using an easy-to-use organocatalyst, TBD (1,5,7-triazabicyclo [4.4.0]-dec-5-ene). Because of increased concern over bisphenol A (BPA) acting as a potent hormone disruptor, proper disposal of end-of-life poly (bisphenol A carbonate) must be conducted to prevent BPA leakage into the ecosystem. In this report, a study on various catalytic methods for the depolymerization of poly (bisphenol A carbonate is presented. Among the many catalysts tested, TBD exhibited the best performance. Under mild conditions and low catalyst loading, poly (bisphenol A carbonate) can be quantitatively degraded into its parent raw materials, bisphenol A and dimethyl carbonate. Additionally, to simplify the reaction process, the depolymerization was designed to not require an auxiliary solvent. The product dimethyl carbonate served as the solvent, and excellent depolymerization was observed. The lack of auxiliary solvent reduces the number of chemical components entering the separation process. Alcoholysis with other alcohols was demonstrated as well. A group of value-added organic carbonates were successfully synthesized from the polycarbonate resin. (C) 2018 Elsevier Ltd. All rights reserved.