Nanochitin: Chemistry, Structure, Assembly, and Applications
Long Bai,Liang Li,Marianelly Esquivel,Blaise L. Tardy,Siqi Huan,Xun Niu,Shouxin Liu,Guihua Tang,Yimin Fan,Orlando J. Rojas +9 more
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TL;DR: In this paper , the authors discuss recent achievements in the isolation, deconstruction, and fractionation of chitin nanostructures of varying axial aspects (nanofibrils and nanorods) along with methods for their modification and assembly into functional materials.
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Abstract: Chitin, a fascinating biopolymer found in living organisms, fulfills current demands of availability, sustainability, biocompatibility, biodegradability, functionality, and renewability. A feature of chitin is its ability to structure into hierarchical assemblies, spanning the nano- and macroscales, imparting toughness and resistance (chemical, biological, among others) to multicomponent materials as well as adding adaptability, tunability, and versatility. Retaining the inherent structural characteristics of chitin and its colloidal features in dispersed media has been central to its use, considering it as a building block for the construction of emerging materials. Top-down chitin designs have been reported and differentiate from the traditional molecular-level, bottom-up synthesis and assembly for material development. Such topics are the focus of this Review, which also covers the origins and biological characteristics of chitin and their influence on the morphological and physical-chemical properties. We discuss recent achievements in the isolation, deconstruction, and fractionation of chitin nanostructures of varying axial aspects (nanofibrils and nanorods) along with methods for their modification and assembly into functional materials. We highlight the role of nanochitin in its native architecture and as a component of materials subjected to multiscale interactions, leading to highly dynamic and functional structures. We introduce the most recent advances in the applications of nanochitin-derived materials and industrialization efforts, following green manufacturing principles. Finally, we offer a critical perspective about the adoption of nanochitin in the context of advanced, sustainable materials.
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Structural Color from Cellulose Nanocrystals or Chitin Nanocrystals: Self-Assembly, Optics, and Applications
Bruno Frka-Petesic,Thomas G. Parton,Camila Honorato-Rios,Aurimas Narkevicius,Kevin Ballu,Qingchen Shen,Zihao Lu,Yukio Ogawa,Johannes S. Haataja,Benjamin E Droguet,Richard M. Parker,Silvia Vignolini +11 more
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References
Surface deacetylation of chitin nano-whiskers
Siyu Chen,Dajun Chen +1 more
TL;DR: In this paper, chitin nano-whiskers (CNWs) were prepared through acid hydrolysis, and the surface deacetylation of the prepared CNW in alkali conditions was carried out.
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Effect of exfoliating agent on rheological behavior of β-chitin fibrils in aqueous suspensions and on mechanical properties of poly(acrylic acid)/β-chitin composites.
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TL;DR: It was revealed that the maximum reinforcing effect is achieved at high temperature (>120 °C) and high relative humidity (≥75.3%RH).
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Extraction processes in extraction of the biopolymer chitin from crab shells
TL;DR: In this paper, the kinetic characteristics of demineralization and deproteinization of chitin-containing raw material were investigated and it was found that increasing the concentration of extractant and the temperature significantly increases the intensity and rate of these processes.
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Anion-Specific Water Interactions with Nanochitin: Donnan and Osmotic Pressure Effects as Revealed by Quartz Microgravimetry.
Soo Ah Jin,Saad A. Khan,Richard J. Spontak,Orlando J. Rojas,Orlando J. Rojas,Orlando J. Rojas +5 more
TL;DR: In this paper, the swelling behavior of partially deacetylated nanochitin (NCh) was studied by quartz crystal microgravimetry and the extent of water uptake induced by halide anions was investigated.
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Preparation of a Chitin/Clay Hybrid Film by a Mechanochemical Method
Kanji Saito,Koji Morita,Makoto Ogawa +2 more
- 30 Sep 2020
TL;DR: The development of a facile and environmentally benign route to shaping chitin into macroscopic forms is one of the important and challenging issues for designing sustainable biopolymer materials as mentioned in this paper.
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