Environmental, legal, health, and safety issue of nanocellulose
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Nanocellulose
Bacterial Cellulose
Biocompatible material
Nanocellulose
Bacterial Cellulose
Nanomaterials
Nanocrystalline material
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Self-cooling material usually uses synthetic or employ harmfull chemicals. Nanocellulose from bacterial culture composited with CaCO3 and ZnO is proposed to overcome the limitation. Bacterial nanocellulose was prepared via kombucha fermentation. Obtained bacterial nanocellulose was bleached using H2O2 to remove impurities. The bleached bacterial nanocellulose exhibited a nanofiber shape and a cellulose I crystalline structure with a crystallinity of 44.3%. The fiber diameter was approximately 92.51±21.46 nm. Bleached bacterial nanocellulose had a higher nanocellulose content than unbleached bacterial nanocellulose. The bleached bacterial cellulose was composited with CaCO3 and ZnO particles to form randomly distributed particles. The composite decreases sample temperature as high as 3.8°C and 3.7°C for CaCO3 and ZnO composites, respectively.
Nanocellulose
Bacterial Cellulose
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Physiochemical properties of bacterial cellulose producing by Gluconacetobacter rhaeticus TL-2C was investigated for confirming its possibility as wound care dressing material. Scanning electron micrograph showed that the diameter of bacterial cellulose fiber was 40 to 50 nm. Solid state 13 C nuclear magnetic resonance (NMR) data showed that the bacterial cellulose had amorphous peak of C-4 and C-6 and the crystallinity index of bacterial cellulose was 75.4. Water absorption ability of bacterial cellulose was 19-fold higher than α-cellulose. Bacterial cellulose had 2-fold higher water maintenance ability than α-cellulose. Key words : Bacterial cellulose, Gluconacetobacter rhaeticus, nanofiber, water absorption.
Bacterial Cellulose
Cellulose fiber
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Bacterial cellulose is a kind of very potential new-type biologic fiber material.The properties of paper made up of bacterial cellulose and cellulose fiber was analyzed.The results shown that by proper treatment bacterial cellulose could be made into pulp for paper-making;Physical strength of paper by appending of bacterial cellulose is enhanced dramatically because of bridge formation among fibers resulted from a large length of bacterial cellulose.
Bacterial Cellulose
Cellulose fiber
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Abstract Summary: Nanocelluloses combine in a very exciting manner important properties of cellulose with amazing features of nano‐scale materials. With a view to the increasing discussion on the potential risks of nanoparticles and nanotechnology to human health and the environment, it is important to point out that the nanocellulose fibers are irreversibly networked in the supramolecular cellulose structure. This contribution assembles the current knowledge in research, development, and application in the field of nanocelluloses through examples. The topics combine selected results on nanocelluloses from bacteria and wood as well as the formation and in situ shaping of cellulose bodies, the coating of materials with nanosized cellulose networks/supports, and the preparation of nanocellulose composites as well as the use of bacterial cellulose as novel type of medical implants.
Nanocellulose
Bacterial Cellulose
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Abstract Bacterial nanocellulose (BNC) is a nanofibrilar polymer produced by strains such as Gluconacetobacter xylinus, one of the best bacterial species which given the highest efficiency in cellulose production. Bacterial cellulose is a biomaterial having unique properties such as: chemical purity, good mechanical strength, high flexibility, high absorbency, possibility of forming any shape and size and many others. Such a large number of advantages contributes to the widespread use of the BNC in food technology, paper, electronic industry, but also the architecture in use. However, the greatest hopes are using the BNC in medicine. This text contains information about bacterial nanocellulose, its specific mechanical and biological properties and current applications.
Nanocellulose
Bacterial Cellulose
Biomaterial
Nanomaterials
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Acetic acid bacteria (AAB) have been used in various fermentation processes. Of several ABB, the bacterial nanocellulose (BNC) producers, notably Komagataeibacter xylinus, appears as an interesting species, in large part because of their ability in the secretion of cellulose as nano/microfibrils. In fact, BNC is characterized by a native nanofibrillar structure, which may outperform the currently used celluloses in the food industry as a promising novel hydrocolloid additive. During the last couple of years, a number of companies worldwide have introduced some BNC-based products to the market. The main aim of this editorial is to underline the BNC potentials.
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Bacterial Cellulose
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This chapter contains sections titled: Introduction Cultivation Conditions for Production of Bacterial Cellulose Bioreactor System for Bacterial Cellulose Plant Cellulose vs. Bacterial Cellulose Compositional View of Bacterial Cellulose Molecular Biology of Bacterial Cellulose Importance of Genetically Modified Bacteria in Bacterial Cellulose Production Applications of Bacterial Cellulose in Different Industrial Sector Conclusion
Bacterial Cellulose
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Nanocellulose
Bacterial Cellulose
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Bacterial Cellulose
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