TEMPO-mediated oxidation cellulose pulp modified with Monosodium Glutamate (MSG)

Abstract

Monosodium glutamate (MSG) was conjugated onto cellulose microfibrils (CMF) by the reaction in acetone solvent at the presence of triethylamine and paratoluene sulfonyl chloride. Results showed that the thermal decomposition of CMF-MSG slightly decreased to lower temperature decomposition confirmed by thermogravimetry analysis (TGA) after MSG was present on CMF surfaces which was confirmed by the reduction of intensity in carboxyl groups bands under infra-red spectroscopy (FTIR) observation. After drying, CMF-MSG was agglomerated, and the color of CMF after modification turned from white into light-brown. This study provides another way to modify nanocellulose with cheap and edible chemical reagent using monosodium glutamate. The modified cellulose probably could be applied in copper (Cu) detection paper kit at mining extraction.