Wettability and Morphological Characterization of a Polymeric Bacterial Cellulose / corn Starch Membrane

Silva, Carina Maiara da; Bottene, Marcia Karspinki; Barud, Hélida Gomes de Oliveira; Barud, Hernane da Silva; Ligabue, Rosane Angélica; Jahno, Vanusca Dalosto

doi:10.1590/1516-1439.351214

Cited by 6 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…General, relatively high values of the water contact angle were recorded compared to the data in the literature [37,38]. Da Silva et al [39] showed that the value of the water contact angle for bacterial cellulose was equal to 32.22 • at the moment of applying a drop of water to the polymer surfaces. *-means and standard deviations in parentheses, **-significant at a 0.05 confidence level, and *** γ tot -surface free energy as the sum of two components: dispersion (γ D ) and polar (γ P ).…”

Section: Contact Angle and Surface Free Energy (Sfe)mentioning

confidence: 94%

“…Comparing the strength properties of bacterial cellulose, they are much higher than for other commonly used polymers when in the form of a film. Stanisławska et al [18] provide, as a comparative example, the tensile strength values for cellophane (20-100 MPa) and polypropylene (30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), which are definitely lower than the tensile strength values for bacterial cellulose (200-300 MPa).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Impact of the Mechanical Modification of Bacterial Cellulose Films on Selected Quality Parameters

et al. 2021

View full text Add to dashboard Cite

This study investigated the effect of the homogenization of bacterial cellulose particles and their reintegration into a membrane on the mechanical and physical parameters of the films produced from them in relation to films made of native cellulose (not subjected to the homogenization process). Bacterial cellulose was obtained from a culture of microorganisms forming a conglomerate of bacteria and yeast, called SCOBY. The research has shown that the mechanical modification of bacterial cellulose contributes to an increase in the elongation of the material. Modified polymer films were characterized by a higher Young’s modulus and a much higher breaking force value compared to native cellulose. The mechanical modification of cellulose contributed to an increase in hygroscopicity and changes in water vapor permeability. The obtained results may provide significant information on the methods of modifying bacterial cellulose, depending on its various applications.

show abstract

Section: Contact Angle and Surface Free Energy (Sfe)mentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

The Impact of the Mechanical Modification of Bacterial Cellulose Films on Selected Quality Parameters

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, BC has different degrees of polymerization and means of production. BC fibers are more stable and more resistant due to their ultra-fine reticular structure, high crystallinity, high tensile strength, high elasticity and durability [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Kinetic Study of a Bacterial Cellulose Production by Komagataeibacter Rhaeticus Using Coffee Grounds and Sugarcane Molasses

et al. 2021

View full text Add to dashboard Cite

Biotechnology can be used to convert waste into valuable products. In this context, there is bacterial cellulose (BC), a natural biopolymer that can be transformed into several useful materials, but its production is limited due to the high cost of the culture media used for its industrialization. In this work, BC was produced from the bacteria Komagataeibacter rhaeticus, using coffee grounds, sugarcane molasses and ethanol. The experiments were carried out under static conditions. The products were collected every 48 h, with a total period of 240 h. The maximum BC production (11.08 g.L-1) was obtained in a culture medium supplemented with coffee powder, hydrolyzed cane molasses and the addition of 1% (v/v) ethanol. The results show that the use of different carbon sources of the evaluated by-products are viable alternatives in reducing costs in BC production.

show abstract

“…Bacterial cellulose (BC) is an exopolymer composed of glucopyranose β 1-4 units. It differs from plant cellulose due to its greater crystallinity (60 to 90%), mechanical strength, greater purity, lack of lignin and hemicelluloses, high water absorption and retention capacity, higher degree of polymerization, and biocompatibility (da Silva et al 2015;Fan et al 2016;Zhao et al 2018). These features have made bacterial cellulose attractive for potential applications in various industries, such as paper, electronics, cosmetics, and even in the medical and pharmaceutical fields (Khan et al 2018;Lazarini et al 2018).…”

Section: Introductionmentioning

confidence: 99%

The influence of culture medium components on the physical and mechanical properties of cellulose synthesized by kombucha microorganisms

Betlej

Salerno-Kochan

Krajewski

et al. 2020

BioRes

View full text Add to dashboard Cite

Preliminary studies are presented showing to what extent nutrients available in the growth environment of Kombucha microorganisms affect the physical and mechanical properties of synthesized cellulose. With an increase in the amount of sucrose in the growth medium and with the presence of additional nutrients, peptone and tea extract, the thickness and strength of the biopolymer increased, while elongation was reduced. The best physical and mechanical parameters were obtained for bacterial cellulose from cultures with the addition of 10% sucrose and 0.25% peptone content. The increase in elongation correlated with the decrease in the degree of polymerization, which means that in media rich in nutrients, the number of molecules building the polymer decreases. The presented data is important in order to select ingredients that will help synthesize bacterial cellulose with the desired physio-mechanical properties.

show abstract

Wettability and Morphological Characterization of a Polymeric Bacterial Cellulose / corn Starch Membrane

Cited by 6 publications

References 19 publications

The Impact of the Mechanical Modification of Bacterial Cellulose Films on Selected Quality Parameters

The Impact of the Mechanical Modification of Bacterial Cellulose Films on Selected Quality Parameters

Kinetic Study of a Bacterial Cellulose Production by Komagataeibacter Rhaeticus Using Coffee Grounds and Sugarcane Molasses

The influence of culture medium components on the physical and mechanical properties of cellulose synthesized by kombucha microorganisms

Contact Info

Product

Resources

About