Journal ArticleDOI
The structure and mechanical properties of sheets prepared from bacterial cellulose Part 2 Improvement of the mechanical properties of sheets and their applicability to diaphragms of electroacoustic transducers
Yoshio Nishi,Masaru Uryu,Shigeru Yamanaka,Kunihiko Watanabe,N. Kitamura,Masatoshi Iguchi,S. Mitsuhashi +6 more
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TLDR
In this paper, the applicability of bacterial cellulose to diaphragms of electroacoustic transducers is discussed and improvement of the mechanical properties by the removal of impurities is investigated.Abstract:
A sheet obtained from bacterial cellulose had a remarkably high modulus of elasticity as reported in Part 1 of this series. The Young's modulus of a sheet prepared by squeezing and drying a gel-like pellicle of bacterial cellulose was found to be >15 GPa. In addition, it has been found that treatment of the gel-like pellicles or dried sheets of bacterial cellulose with alkaline and/or oxidative solutions improves the mechanical properties significantly, and the Young's modulus of the resulting sheets approaches 30 GPa. In this paper, improvement of the mechanical properties of bacterial cellulose sheets by the removal of impurities is investigated and the applicability of bacterial cellulose to diaphragms of electroacoustic transducers is discussedread more
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Cellulose nanomaterials review: structure, properties and nanocomposites
Robert J. Moon,Robert J. Moon,Ashlie Martini,John A. Nairn,John Simonsen,Jeffrey P. Youngblood +5 more
TL;DR: This critical review provides a processing-structure-property perspective on recent advances in cellulose nanoparticles and composites produced from them, and summarizes cellulOSE nanoparticles in terms of particle morphology, crystal structure, and properties.
Journal ArticleDOI
Cellulose nanopaper structures of high toughness.
TL;DR: Wood nanofibrils are used to prepare porous cellulose nanopaper of remarkably high toughness and the large strain-to-failure means that mechanisms, such as interfibril slippage, also contributes to inelastic deformation in addition to deformation of the nan ofibrils themselves.
Journal ArticleDOI
Bacterial cellulose—a masterpiece of nature's arts
TL;DR: A review of relevant studies including the production of cellulose by bacteria, the formation of microfibrils and gel layer, the properties of gel and processed sheets, and some aspects of applications can be found in this article.
Journal ArticleDOI
Microbial cellulose - The natural power to heal wounds
TL;DR: Recent developments and applications of microbial cellulose synthesized in abundance by Acetobacter xylinum in the emerging field of novel wound dressings and skin substitutes are summarized.
Journal ArticleDOI
Cellulose reinforced polymer composites and nanocomposites: a critical review
Chuanwei Miao,Wadood Y. Hamad +1 more
TL;DR: In this paper, a critical assessment of the use of cellulosic materials for reinforcement in polymer composites is provided, focusing on structure-property interrelationships and the compatibilization of cellulose materials for optimal performance of composite materials.
References
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Journal ArticleDOI
Colorimetric Method for Determination of Sugars and Related Substances
TL;DR: In this article, a method was developed to determine submicro amounts of sugars and related substances using a phenol-sulfuric acid reaction, which is useful for the determination of the composition of polysaccharides and their methyl derivatives.
Journal ArticleDOI
The structure and mechanical properties of sheets prepared from bacterial cellulose
Shigeru Yamanaka,Kunihiko Watanabe,N. Kitamura,Masatoshi Iguchi,S. Mitsuhashi,Yoshio Nishi,Masaru Uryu +6 more
TL;DR: A preliminary experiment has shown that a sheet-shaped material prepared from bacterial cellulose has remarkable mechanical properties, the Young's modulus being as high as >15 GPa across the plane of the sheet.