Nanostructured Biomaterials and Biocomposites from Bacterial Cellulose Nanofibers

Dahman, Yaser

doi:10.1166/jnn.2009.1466

Cited by 118 publications

(58 citation statements)

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“…The water absorption capacity depends especially on the number and size of pores on the polymer surface. It was reported by several authors that the loose fibril arrangement and large size of pores enhance the water capacity of BC [70,71]. It is considered that closely arranged microfibrils bind the water molecules more efficiently due to the stronger hydrogen bonding interactions, as compared to the loosely arranged microfibrils [72,73].…”

Section: Discussionmentioning

confidence: 99%

Time Dependent Influence of Rotating Magnetic Field on Bacterial Cellulose

Fijałkowski

Rakoczy

Żywicka

et al. 2016

International Journal of Polymer Science

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The aim of the study was to assess the influence of rotating magnetic field (RMF) on the morphology, physicochemical properties, and the water holding capacity of bacterial cellulose (BC) synthetized by Gluconacetobacter xylinus. The cultures of G. xylinus were exposed to RMF of frequency that equals 50 Hz and magnetic induction 34 mT for 3, 5, and 7 days during cultivation at 28 ∘ C in the customized RMF exposure system. It was revealed that BC exposed for 3 days to RMF exhibited the highest water retention capacity as compared to the samples exposed for 5 and 7 days. The observation was confirmed for both the control and RMF exposed BC. It was proved that the BC exposed samples showed up to 26% higher water retention capacity as compared to the control samples. These samples also required the highest temperature to release the water molecules. Such findings agreed with the observation via SEM examination which revealed that the structure of BC synthesized for 7 days was more compacted than the sample exposed to RMF for 3 days. Furthermore, the analysis of 2D correlation of Fourier transform infrared spectra demonstrated the impact of RMF exposure on the dynamics of BC microfibers crystallinity formation.

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Section: Discussionmentioning

confidence: 99%

Time Dependent Influence of Rotating Magnetic Field on Bacterial Cellulose

Fijałkowski

Rakoczy

Żywicka

et al. 2016

International Journal of Polymer Science

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“…The high surface to volume ratio along with the unique poly-functionality, hydrophilicity and biocompatibility all make the biocellulose nanofibers potential material for a wide range of biomedical applications [4]. Furthermore, the high elastic modulus and breaking strength of the nanofibers can lead to introducing several advanced functional nanocomposites [3][4][5]8]. BC has also many important applications in industries such as electronics, paper, medical devices, and food industry [4].…”

Section: Introductionmentioning

confidence: 99%

Potential of Biocellulose Nanofibers Production from Agricultural Renewable Resources: Preliminary Study

Dahman

Jayasuriya

Kalis

2010

Appl Biochem Biotechnol

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In the present preliminary study, we report results for the biocellulose nanofibres production by Gluconacetobacter xylinus. Production was examined by utilizing different feedstocks of single sugars and sugar mixtures with compositions similar to the acid hydrolyzates of different agriculture residues. Profiles for cell proliferation, sugar consumption, and the subsequent pH changes were thoroughly analyzed. Highest biocellulose production of 5.65 g/L was achieved in fructose medium with total sugar consumption of 95.57%. Moreover, the highest production using sugar mixtures was 5.2 g/L, which was achieved in feedstock with composition identical to the acid hydrolyzate of wheat straws. This represented the highest biocellulose yield of 17.72 g/g sugars compared with 14.77 g/g fructose. The lowest production of 1.1 and 1.75 g/L were obtained in xylose and glucose media, respectively, while sucrose and arabinose media achieved relatively higher production of 4.7 and 4.1 g/L, respectively. Deviation in pH of the fermentation broths from the optimum value of 4-5 generally had marked effect on biocellulose production with single sugars in feedstock. However, the final pH values recorded in the different sugar mixtures were approximately 3.3-3.4, which had lower effect on production hindrance. Analyzing profiles for sugars' concentrations and cell growth showed that large amount of the metabolized sugars were mainly utilized for bacterial cell growth and maintenance, rather than biocellulose production. This was clearly observed with single sugars of low production, while sugar consumption was rather utilized for biocellulose production with sugar mixtures. Results reported in this study demonstrate that agriculture residues might be used as potential feedstocks for the biocellulose nanofibres production. Not only this represents a renewable source of feedstock, but also might lead to major improvements in production if proper supplements and control were utilized in the fermentation process.

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“…Precisely, BC fibers have a high aspect ratio with a diameter of 20-100 nm and very high surface area, conferring a very high liquid-loading capacity to BC. Moreover, several other salient features, such as biocompatibility, hydrophilicity, transparency, and nontoxicity make it a suitable candidate for a wide range of applications in various fields including biomedicine and biotechnology [118]. Generally, the choice of a biomaterial for medical applications is principally dependent on its biocompatibility (i.e., ability to remain in contact with living tissues without causing any toxic or allergic side effects).…”

Section: Medical Applications Of Bc and Bc Compositesmentioning

confidence: 99%

Synthesis, Chemistry, and Medical Application of Bacterial Cellulose Nanocomposites

Ul-Islam

Khan

Khattak

et al. 2015

Advanced Structured Materials

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Bacterial cellulose (BC), an environmental friendly polymeric material, has recently received immense attention in the human society. Herein, we have focused on the biosynthesis, chemical structure, and physiological behavior of BC along with synthetic routes and medical applications of its nanocomposites. The structure of BC consists of nanofibrils made up of (1 → 4) β-glycosidic linked glucose units interconnected through intra-and intermolecular hydrogen bonds. The interconnected 3D network structure of BC nanofibers with a high degree of nanoporosity makes BC an ideal candidate for the incorporation of nanomaterials to form reinforced composites. BC nanocomposites have been synthesized through a number of routes that have not only improved the existing properties of BC, but also enhanced it with novel features. Among nanomaterials, metal, metal oxides, and organic nanomaterials have been effectively used to engender antimicrobial, biocompatible, conductive, and magnetic properties in BC. BC nanocomposites have been successfully employed in the medical field and have shown a high clinical value for wound healing and skin tissue repair. Recent interest has been focused on designing ideal biomedical devices like artificial skin and artificial blood vessels from BC. This study will provide an extensive background about the primary features of BC and discuss the synthetic routes and chemical feasibility of BC nanocomposites along with their current and future application in the medical field.

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Nanostructured Biomaterials and Biocomposites from Bacterial Cellulose Nanofibers

Cited by 118 publications

References 0 publications

Time Dependent Influence of Rotating Magnetic Field on Bacterial Cellulose

Time Dependent Influence of Rotating Magnetic Field on Bacterial Cellulose

Potential of Biocellulose Nanofibers Production from Agricultural Renewable Resources: Preliminary Study

Synthesis, Chemistry, and Medical Application of Bacterial Cellulose Nanocomposites

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