POLYURETHANE SYNTHESIS FROM THE MONOMER OF USED COOKING OIL OF HYDRATION RESULTS WITH METHYLENE -4,4'-DIFENILDIISOSIANAT (MDI)

Agnes Retno Purbandari, Monica POLYURETHANE SYNTHESIS FROM THE MONOMER OF USED COOKING OIL OF HYDRATION RESULTS WITH METHYLENE -4,4'-DIFENILDIISOSIANAT (MDI). S1 thesis, UNY.

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Abstract

This study aims at (1) determining effects of the hydration process in the nature of used cooking oil, (2) studying Polyurethane synthesis from the monomer of used cooking oil from hydrated adsorption reacted using MDI, (3) studying effects of variations of oil concentration and MDI on the mechanical properties of Polyurethane, (4) studying effects of variations of oil concentration and MDI on Polyurethane cross linking, and (5) determining the thermal properties of Polyurethane of synthesis results based on mechanical properties and the most optimum cross linking. Used cooking oil utilized in this study was the three-time-used cooking oil that had undergone the process of adsorption and hydration. Adsorption process was carried out using activated carbons and hydration process using H2SO4 solution with concentration variations of 15%, 20%, and 25% (v/v). Characterizations of used cooking oil before and after hydration were done through (1) the analysis of functional group using FTIR spectroscopy, (2) the determination of iodine number, (3) the hydroxyl number determination, and (4) the mass density determination. Polyurethane was synthesized from a basic material of used cooking oil of hydrated adsorption using MDI. Polymerization reaction was carried out at the room temperature (29°C) with variations of the oil mass composition to the total mass of reactants of 20%, 40%, and 60% (m/m). Polyurethane characterization of synthesis results included (1) the functional group analysis using FTIR spectroscopy, (2) the determination of the cross linking through a swelling degree test, (3) the determination of mechanical properties measured with a Shore A. Durometer, and (4) the determination of thermal properties was done by using DTA. Research results showed that the most optimum hydration process of used cooking oil was done using H2SO4 solution with the concentration of 20% (v/v), the hydration process caused the hydroxyl number and density of used cooking oil increased while the iodine number of the used cooking oil decreased. Polyurethane could be synthesized from used cooking oil of the hydrated adsorption of MDI indicated by the characteristic function group for the polyurethane through FTIR analysis. This study also showed that the higher the concentration ratio of MDI to the oil, the smaller the degree of the polyurethane swelling (the more cross linking) and the higher the mechanical properties (the hardness). Polyurethanes of used cooking oil and MDI with the composition ratio of 20% - 80° was best suited as a roll coating materials in paper industries. Keywords: Polyurethanes, hydration, thermal properties, mechanical properties, cross linking.

Item Type: Thesis (S1)
Subjects: Matematika dan Ilmu Pengetahuan Alam > Kimia
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Kimia > Kimia
Depositing User: admin fmipa
Date Deposited: 24 Jul 2012 08:11
Last Modified: 24 Jul 2012 08:11
URI: http://eprints.uny.ac.id/id/eprint/2668

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