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Synthesis of Polyurea via the Addition of Carbon Dioxide to a Diamine Catalyzed by Organic and Inorganic Bases
Author(s) -
Wu PeiXuan,
Cheng HaiYang,
Shi RuHui,
Jiang Shan,
Wu QiFan,
Zhang Chao,
Arai Masahiko,
Zhao FengYu
Publication year - 2019
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201801134
Subject(s) - polyurea , chemistry , diamine , catalysis , attenuated total reflection , infrared spectroscopy , organic base , organic chemistry , fourier transform infrared spectroscopy , base (topology) , carbon dioxide , polymer chemistry , inorganic chemistry , chemical engineering , mathematical analysis , mathematics , engineering , coating
The synthesis of polyurea via the addition of carbon dioxide (CO 2 ) to a diamine of 4,7,10‐trioxa‐1,13‐tridecanediamine (TOTDDA) was investigated by using organic and inorganic base catalysts. It was found that 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) was the most active among the catalysts examined. The influence of CO 2 pressure, temperature, and reaction time was examined for the DBU‐catalyzed polyurea synthesis. The reaction mixture was analyzed by in situ high‐pressure attenuated total reflectance Fourier‐transform infrared spectroscopy (ATR‐FTIR) under reaction conditions, and possible reaction mechanisms, in which DBU can activate both CO 2 and TOTDDA, were proposed. Physicochemical properties of polyurea materials synthesized were examined by several techniques. In addition, the catalytic performance of DBU was further examined for the addition of CO 2 to other different diamine compounds.