Journal
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
Volume 24, Issue 1, Pages -Publisher
UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS
DOI: 10.1590/1980-5373-MR-2020-0321
Keywords
Poly(L-glutamic acid); nanocomposites; multi-walled carbon nanotubes
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Funding
- Vietnam National University HoChiMinh City (VNU-HCM) [NV201920a-01/HD-KHCN]
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The study investigated the synthesis of poly(L-glutamic acid) using a reduction method and combined the resulting polyglutamic acid with multi-walled carbon nanotubes to form MWCNT/PG biocomposites.
The synthesis of poly(L-glutamic acid) (PG) was investigated. Reduction of poly(benzyl-L-glutamate) by the palladium/charcoal catalyst proved to be an effective method for obtaining polyglutamic acid pure and particularly exhibiting in the alpha-helix secondary structure. The structure of this synthetic polypeptide was assessed by infrared spectroscopy, gel permeation chromatography, proton nuclear magnetic resonance spectroscopy, temperature-modulated differential scanning calorimetry and wideangle powder X-ray diffraction methods. The alpha-helical PG was, for the first time, combined with multi-walled carbon nanotubes (MWCNTs). The obtained PG was demonstrated to be a promising matrix to disperse MWCNTs, forming MWCNT/PG biocomposites.
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