Dispersion and Beating of Bacterial Cellulose and their Influence on Paper Properties

Abstract

Three dispersion instruments (a standard laboratory disintegrator, PFI beater, and ultrasonic cell disrupter) were tested to determine their effects on the dispersion of bacterial cellulose (BC) wet films. After treatment with a standard 10000 r disintegrator treatment, there was still a large number of undispersed fiber bundles in the BC suspension. The BC films were dispersed well after PFI beating revolution at 30000 r, and the cationic charge demand of the BC suspension reached 2.4 × 10 -4 eq·g -1 . The ultrasonic cell crusher was altogether unsuitable for BC dispersion. The ultrasonic cell crusher only separated the BC from the bundles. The properties of the resulting paper indicated that the physical strength of paper containing BC dispersed by the PFI beater was higher than that of the sample produced via standard laboratory disintegrator. Well-dispersed BC was distributed evenly among the plant fibers, which benefitted the combination of BC and plant fiber to improve the physical properties of the paper sheets.

Ni(II) and Pb(II) Removal Using Bacterial Cellulose Membranes

“…In our case, the increase of the BC cationic demand could be performed without adding reagents by raising the surface area in contact with water. Addressing this matter, a study developed by Yuan et al demonstrated that a sharp increase in the cationic demand is obtained by just disintegrating the membranes, reaching its maximum after beating suspensions with 10% of BC material at 8000 rpm [ 56 ]. This treatment after the membrane synthesis could provide an enhancement of the performance when treating waters with low metal content.…”

Enhancement of Antibacterial Silk Face Covering with the Biosynthesis of Silver Nanoparticles from Garcinia mangostana Linn. Peel and Andrographis paniculata Extract and a Bacterial Cellulose Filter

“…Therefore, this result may have been related to the aggregation of the bacterial cellulose resulting in the index of tear strength being reduced. The accumulation of bacterial cellulose fibers was inversely related to the strength of the sheets [46,47]. It was also found that increasing the amount of nata de coco changed the water absorption properties of the bacterial cellulose sheets as the sheets became more water-resistant.…”

Bacterial Cellulose and Its Applications

“…D. Johnson et al [ 170 ] proposed improving the tensile properties of paper by using a BC additive. Xiang et al [ 167 ] and Yuan et al [ 171 ] also announced that a homogeneous dispersion of BC within the paper matrix is an important factor to manufacture successfully reinforcing paper. To succeed in this process, intense stirring [ 172 , 173 ] or acid hydrolysis [ 34 ] was tried, but the homogeneous dispersal was difficult due to the high entanglement of the nanofibers reached during culture [ 172 ].…”