Investigation into the structural, morphological, mechanical and thermal behaviour of bacterial cellulose after a two-step purification process

► Production of bacterial cellulose via fermentation of Acetobacter xylinum. ► Two-step process to purify bacterial cellulose. ► Improvement of mechanical and thermal properties after two-step purification. ► Control of structural morphology. ► Prevention of transformation from crystal structure cellulose I to cellulose II.