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Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (2): 369.

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Synthesis and Characterization of Poly-L-glutamic Acid with a High Molecular Weight

CAO Tian 1,  YIN Jing-Bo1,  LUO Kun1,  CHEN Hong-Dan1,  CHEN Xue-Si2   

  1. 1. Department of Polymer,  Shanghai University,  Shanghai  201800, China; 2. State Key Laboratory of Polymer Physics and Chemistry,  Changchun Institute of  Applied Chemistry,  Chinese Academy Sciences,  Changchun  130022, China
  • Received:2005-02-21 Online:2006-02-10 Published:2006-02-10
  • Contact: CHEN Xue-Si, xschen@ciac.jl.cn; YIN Jing-Bo，jbyin@staff.shu.edu.cn

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Abstract:

Abstract Poly-L-glutamic acid with a high molecular weight  was prepared by chemical synthesis.  The structures of PBLG and PLGA were confirmed by FTIR and 1H NMR spectroscopies and their molecular weights were measured by GPC and viscosity measurements.  The results show that the average molecular weight of poly-L-glutamic acid is about 7×104\_35×104.   Furthermore,  when the anhydride-initiator malar ratio n(A)/n(I)>50,  the average molecular weight was independent of the amount of triethylamine initiator. 

Key words: Keywords L-Glutamic acid;  γ-Benzyl L-glutamate; Poly(γ-benzyl L-glutamate);  Poly-L-glutamic acid

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