Characterization of Polyurethanes from MDI, PEG 400 and Kepok Banana Hump additives with TGA, DTG and LCMS spectrometers

Abstract

Polyurethanes from methylene diphenyl isocyanate (MDI), polyethylene glycol (PEG) 400 and banana weevil starch have been synthesized. This polymer has been characterized using thermogravimetric analysis (TGA), differential thermogravimetry (DTG), liquid chromatography-mass spectrometry (LCMS), and polyurethane physical tests which include: tensile and strain tests. Thermal properties can be measured using TGA and DTG devices, which aim to determine the weight of the sample under controlled conditions and cooling at a controlled rate as a function of time. TGA and DTG analysis results showed that KBH starch with a concentration of 15% in phase 1 polymerization reaction occurred at a temperature of 78 ° C, then in phase 2 a mass change of 2.87% occurred and in phase 3 saturation occurred marked by a mass loss of 97.03%. Polyurethane physical test results showed a strain of 34.37% GL and an extension of 8.6733 nm. These results indicate that polyurethane has the potential to be applied as an ingredient in the manufacture of medical devices, that operate under heating conditions