Karakterisasi Sifat Fisis dan Mikrostruktur Papan Gipsum dengan Variasi Komposisi Lateks

Gypsum board is one of the advanced products of gypsum material with a mixture of fiber/fiber or other materials. Gypsum board has a weakness in its physical properties that easily absorb water. Therefore, there is a need for innovation in the manufacture of gypsum boards that will produce even better quality. The manufacture of gypsum board can utilize waste materials such as coconut shells and rice husks and latex as adhesives. The mixture of gypsum board materials including: gypsum, coconut shell, and rice husk used was 70%, 15%, 15% with latex variation 10%, 12%, 14%, 16%, 18% with FAS 0.5 and drying for 28 days. The parameters of the physical properties test include: density and thickness expansion, as well as microstructural testing to determine the morphology of the gypsum board sample. Analysis of the physical properties of gypsum board obtained optimal results, namely in sample A with a variation of 10% latex composition, the density value was 1.35 g/cm3, and the thickness expansion was 5.03% which met the SNI Standard 01-4449-2006. While the microstructure produces morphological images that show inhomogeneous distribution, particle agglomeration forms, and impurities