摘要
聚对苯二甲酸丙二醇酯(PTT)是一种性能优异的芳香族热塑性聚酯,具有广泛的市场应用前景。本文对PTT主要合成方法以及用于PTT合成的催化剂进行了综述。相较于酯交换法,直接酯化法工艺流程短,生产效率高,是目前较好的PTT合成工艺路线。用于PTT合成的催化剂主要包括锡系、锑系、钛系以及复合型催化剂,其中锡系催化剂活性高,产品色相好,但锡化合物毒性较大,会对人体造成伤害以及污染环境;锑系催化剂价格便宜,但仅对缩聚阶段反应表现出优异的催化效果;钛系催化剂无毒环保且活性高,但合成的PTT产品色相偏黄。相比之下,复合型催化剂更具优势,但其催化活性以及稳定性有待进一步提高。随着环保要求的提高,高效环保的催化剂将成为今后PTT合成研究的的主要方向。
Polytrimethylene terephthalate(PTT)is an aromatic thermoplastic polyester with excellent properties and it has a broad prospect of application and market.The synthetic methods and catalysts of PTT are introduced in this review.Compared to transesterification,direct esterification is a better way to synthesize PTT because of its short process and high production efficiency.The catalysts for synthesis of PTT mainly including stannum serial,antimony serial,titanium serial and composite catalysts.Sn-based catalysts exhibited favorable effect on PTT properties,but they are toxic and harmful for environment and human-being;Antimony compounds is cheap,while it’s only suitable for condensation.Titanium-containing catalysts are nontoxic and environmentally friendly,which show excellent catalytic performance in the synthesis of PTT.However,PTT is discolored by using Titanium as the catalyst.In contrast,the composite catalysts have more advantages,but their activity and stability have to be further improved.With the improvement of environmental protection,the catalyst with high efficiency and eco-friendly would be the major trend of research for synthesis of PTT.
作者
李梦蝶
翟刚
贾冰莹
白元盛
王公应
LI Meng-die;ZHAI Gang;JIA Bing-ying;BAI Yuan-sheng;WANG Gong-ying(Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing, 100049, China;Chengdu Organic Chemicals Co., Ltd., Chengdu 610041, China)
出处
《合成化学》
CAS
北大核心
2020年第12期1089-1097,共9页
Chinese Journal of Synthetic Chemistry
基金
国家重点研发计划项目(2016YFB0301904)。
关键词
聚对苯二甲酸丙二醇酯
酯交换
直接酯化
催化剂
聚酯
合成
综述
polytrimethylene terephthalate
transesterification
direct esterification
catalysts
polyester
synthesis
review
作者简介
第一作者:李梦蝶(1994-),女,汉族,四川眉山人,硕士研究生,主要从事聚酯合成方面的研究;通信联系人:王公应,研究员,博士生导师,E-mail:gywang@cioc.ac.cn。
