Karakterisasi Kertas Dinding Berbasis Pulp Pinus Merkusii yang Dimodifikasi dengan Variasi Selulosa Bakteri Hasil Fermentasi Teh Kombucha dan Kalsium Karbonat

Abstract

This research was conducted to produce wallpaper based on natural materials as an alternative to conventional wallpaper made of PVC by utilizing mercury pine pulp as a matrix, bacterial cellulose fermented from kombucha tea as a strengthener, and calcium carbonate as a filler. This research aims to evaluate how different bacte-rial cellulose contents namely 0%, 20%, 25%, and 30%. The wallpaper produced by adding 30% calcium carbonate to the total mixture of materials. The produced wall-paper is characterized using tensile test, water absorption test, painting test, and SEM analysis. The research results show that bacterial cellulose variation of 30% was the most effective composition in all characterizations characterized by an increase in ten-sile strength up to 3.05 MPa, a decrease in water absorption up to 181.02%, the paint-ing test results indicated that no ink spreading occured on the paper surface and the painted line was getting sharper. Meanwhile, SEM observations revealed that the pa-per structure morphology contained a round-shaped bacterial cellulose attached to merkusii pine fibers.