Sintesis Poliuretan dari Campuran Getah Damar Mata Kucing (Shorea Javanica) dan Peg 400 dengan Toluena Diisosianat (TDI)

Abstract

The synthesis of polyurethane from Damar mata kucing (Shorea Javanica) and PEG 400 using isocyanate monomer was carried out by reacting the resin resin with 98% formic acid and 30% H2O2, then polyurethane was made by reacting the resin resin polyol with PEG 400 using isocyanate monomer with a variety of polyols. gum resin: PEG 400 with the addition of toluene 2,4-diisocyanate, namely 100:0; 80:20; 60:40; 40:60:2; 20:80: and 0:100. The polyurethane that was obtained was then characterized using FT-IR and the degree of swelling was tested to determine polyurethane cross-linking. The results of the FT-IR spectrum of gum resin and gum resin polyol show the presence of OH groups of 3406.8 cm-1 and 3414.2 cm-1, respectively. The results of the FT-IR spectrum show that polyurethane can be synthesized from gum resin polyol as evidenced by the presence of absorption at wave numbers around 3280-3295 cm-1 which indicates the absorption of –NH groups from urethane, the presence of wave numbers 1669-1654 cm-1 which indicates the C=O group, the presence of The wave number 1222 cm-1 indicates the presence of a C-O group and the absence of a peak at 2275-2250 cm-1 indicates that the isocyanate has reacted completely with the hydroxyl group. The optimum polyurethane ratio was obtained in 80% polyurethane polyurethane with a swelling degree percentage of 3.19% with the highest crosslinking. TGA analysis shows high thermal stability of 80% polyurethane with a total mass loss of 95.07%.Keywords:Cross-linking, Damar mata kucing resin, Polyol, Polyurethane