期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 53, 期 11, 页码 1351-1359出版社
WILEY-BLACKWELL
DOI: 10.1002/pola.27568
关键词
CO2; dimethylcarbonate; K2CO3; methyl ricinoleate; NIPU; polycondensation; polyurethanes; renewable materials; structure-property relations; synthesis; TBD; thermal properties; thermoplastics; viscosity
资金
- Haute Normandie region
Novel fully renewable AA-BB type nonisocyanate polyurethanes (NIPUs) were synthesized using the transurethanization approach. Dicarbamate monomers were prepared by the reaction of a diamine with an excess of dimethylcarbonate (DMC), in presence of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as catalyst. Then, the dicarbamate was reacted with a diol to afford the polymer, in presence of TBD or K2CO3 as catalyst. Several renewable diamines and diols were tested. The two steps were conducted under neat conditions. The obtained materials exhibited T-g values varying from -38 to 42 degrees C, T-m values varying from 42 to 204 degrees C, and thermal stabilities above 200 degrees C. (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1351-1359
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