Ring opening polymerization of aliphatic cyclic carbonates in the presence of natural amino acids |
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| Authors: | Jiyan Liu Chao Zhang Lijian Liu |
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| Affiliation: | 1. College of Chemical and Environment Engineering, Jianghan University, Wuhan 430056, People's Republic of China;2. Department of Polymer Science, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, People's Republic of China |
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| Abstract: | Poly(dimethyl trimethylene carbonate) (PDTC) and poly(trimethylene carbonate) (PTMC) were synthesized by ring‐opening polymerization (ROP) of dimethly trimethylene carbonate (DTC) and trimethylene carbonate (TMC) in the presence of five kinds of natural amino acids (L ‐alanine, L ‐valine, L ‐leucine, L ‐proline, and L ‐phenylalanine). PDTCs with number‐average molecular weight (Mn) from 6700 to 18,900 g/mol and PTMCs with Mn from 7200 to 17,800 g/mol were obtained at a feed ratio of monomer]/L ‐phenylalanine] ranging from 50 to 200. The results of 1H nuclear magnetic resonance and titration proved amino acid connecting onto the polymer backbone. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | dimethyl trimethylene carbonate trimethylene carbonate natural amino acid initiator ring‐opening polymerization |
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