Effect of addition cetyltrimethylammonium bromide on morphology and functional groups of composite membrane bacterial nanocellulose - Titanium dioxide

Abstract

This research investigates bacterial nanocellulose (BNC) composite reinforced with Titanium Dioxide (TiO2) in terms of morphology and membrane functional groups. Cetyltrimethylammonium Bromide (CTAB) was used as a surfactant. The purpose of this research is to investigate the effect of addition CTAB on the membrane composite. Bacterial cellulose (BC) pellicle was produced from the extract of pineapple peel waste. Acetobacter xylinum was used as the fermentation agent. The solution of 1% NaOH was applied for removing the BC pellicle impurities. Mechanical treatment and high pressure homogenize process had been done to synthesize BNC. The composite membranes were synthesized by using a mixture of BNC, TiO2 1%, and CTAB with different mass percentages, 0.5%, 1%, and 2%, and then the composite solution was dried by the oven for 14 hours at 80 °C. Properties of the composite membrane can be known based on its morphology and functional groups. Scanning Electron Microscope was used to observe the morphology. The results show that a higher concentration of CTAB makes BNC structure became more porous, and TiO2 particles spread more uniformly. FTIR analysis was conducted in range of 682cm-1, 862cm −1, 1041cm −1 and 3421 cm−1. Successively, they are the position of the C-OH, C-H, C-O-C, and O-H function clusters.