期刊
POLYMER
卷 43, 期 6, 页码 1773-1779出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0032-3861(01)00751-0
关键词
polyaspartimides; phosphorus; Michael addition
Novel polyaspartimides were successfully synthesized via Michael addition reactions involving phosphorus-containing diamines and bismaleimides as monomers and using p-toluenesulfonic acid and N-N-dimethylacetamide as a catalyst and a solvent, respectively. The yields of the polymerization and the molecular weights and inherent viscosities of the polymers increased with the increasing monomers, concentrations, with an upper limit of 0.92 mol/l. All of the obtained polymers were soluble in organic solvents and showed high glass transition temperatures of 227-256 degreesC, good thermal stability of 360-427 degreesC, high char yields of 53-64% in nitrogen and 25-46% in air at 700 degreesC. (C) 2002 Elsevier Science Ltd. All rights reserved.
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