Optimization of Polymer Networks using Variations in Moleculer Weight of Polyetilen Glycol in the Manufacture of Semi – IPN Hidrogels from Coconut Water Cellulose Bacteria

Abstract

: Research heve been done to find out the effect of variation moleculer weight polietylen glikoln 1000; 3000 and 6000 on manufacture semi interpenetrating polymer networks hidrogel from bacterial selulose with sytem fermentation using accetobacterial-xylinum in based coconut water. IPN hidrogel by polietilenglikol 6000 has more croslinks compared using peg 3000 and peg 1000. Analysis thermal hidrogel IPN using peg 6000 is 457,14 0 C, compared PEG 3000 is 252, 80 0 C and PEG 1000 is 249,30 0 C. semi-IPN hydrogel formed was characterized by, crosslink percentage, chemistry structural analysis using Fourier Transform Infrared (FT-IR) spectroscopy, water absorption test and thermal resistance using Differential Thermal Analysis (DTA). From the analysis, they showed Semi Interpenetrating Polymer Network Hydrogel with using PEG 6000 the highest crosslink percentage (64,3%) for PEG 3000 is 42.5 % and PEG 1000 is 15. 7 %. Characterization results of FTIR indicate the occurrence of crosslinking between Polyacrylic acid and MBA. This shown in existence of 1403 cm -1 and 1560 cm -1 (COO - ) and 3413 cm -1 (NH amine). Thermal analysis using Differential Thermal Analysis (DTA) shows thermal optimum thermal stability at the addition of Polietilengiikol 6000 to semi-IPN hydrogel which was completely degraded at 680 o C, reaction that occurs during the decomposition process is endothermic and exothermic reaction.