Ecology

New findings from Jianghan University describe advances in applied polymer science

  2008 MAR 24 - (VerticalNews.com) -- According to a study from Wuhan, People's Republic of China, "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 (M-n) from 6700 to 18,900 g/mol and PTMCs with M-n from 7200 to 17,800 g/mol were obtained at a feed ratio of [monomefl/[L-phenylalanine] ranging from 50 to 200," wrote J.Y. Liu and colleagues, Jianghan University.

  The researchers concluded: "The results of H-1 nuclear magnetic resonance and titration proved amino acid connecting onto the polymer backbone."

  Liu and colleagues published the results of their research in the Journal of Applied Polymer Science (Ring opening polymerization of aliphatic cyclic carbonates in the presence of natural amino acids. Journal of Applied Polymer Science, 2008;107(5):3275-3279).

  For additional information, contact J.Y. Liu, Jianghan University, College Chemical & Environmental Engineering, Wuhan 430056, People's Republic of China.

  The publisher of the Journal of Applied Polymer Science can be contacted at: John Wiley & Sons Inc., 111 River St., Hoboken, NJ 07030, USA.

  Keywords: Asia, China, Conservation, Ecology, Engineering, Environment, Environmental Engineering, Isango limited.

  This article was prepared by VerticalNews Ecology, Environment & Conservation editors from staff and other reports. Copyright 2008, VerticalNews Ecology, Environment & Conservation via VerticalNews.com.