RESEARCH AND PRODUCTION OF COMBINED MATERIALS BASED ON DERMATED CHITOSAN AND POLYPHENOL ISOLATED FROM SIM LEAVES

Abstract

In this paper, chitosan was modified by Sodium tripolyphosphate (STPP) at
different concentrations (1%, 3% and 5% by weight). The denaturation has a
significant effect on the mechanical strength, swelling and slight influence on the
structure of chitosan. The denaturation results showed that when using 3% STPP,
the modified CS film had the highest breaking strength. Therefore, 3% STPP was
selected for further studies. Research on the successful fabrication of modified
chitosan and polyphenol composites, through IR results, showed that the
positions of peaks characteristic for the oscillations of O-H, C-H, N-H groups had a
slight change, showing that the polyphenols were attached. to the chitosan
surface in a significant amount. The structural morphology showed that the
polyphenols were coated/coated by CS, forming particles with size 10µm to 20µm.