Pembuatan dan Karakterisasi Superabsorben Polimer Berbasis Natrium Karboksimetil Selulosa dan Hidroksietil Metil Selulosa Menggunakan Asam Suksinat sebagai Agen Ikat Silang

Abstract

This study examines the preparation of polymer superabsorbent from sodium carboxymethyl cellulose (Na-CMC) and hydroxyethyl methyl cellulose (HEMC) with succinic acid crosslinking agent. The preparation of polymer superabsorbent is done by mixing Na-CMC and HEMC in the ratio of 3:1 in a 2% solution, then the crosslinking agent will be added with variations of 2%, 3%, 4%, 5%, and 6%. The result of the mixture is a film that will be cut into small pieces and characterized by testing the degree of crosslinking, water absorption, FTIR, DSC, and TGA. The highest percentage of crosslinking degrees in the 6% SAP AS sample was 53.12%. The results of water absorption with the optimum value are in the 3% SAP AS sample of 8.444% or 84,44 g/g. The results of the FTIR test showed the formation of superabsorbent polymer in SAP AS 3% with the presence of -OH groups at wave number 3302.4 cm-1 and -COO groups at wave number 1416.4 cm-1. The thermogram results on thermal analysis using DSC produced a glass transition temperature (Tg) value of SAP between Tg Na-CMC and HEMC which is 135.52 oC where the glass transition temperature of Na-CMC is 148.03 oC. HEMC is 113.61 oC which indicates that the two samples have mixed. The TGA analysis for the Na-CMC sample left a residue of 30.7% of the initial mass and a mass loss of 69.3%, and for the SAP AS 3% sample left a residue of 24% of the initial mass and a mass loss of 76%.