Preparation and characterization of individual chitin nanofibers with high stability from chitin gels by low-intensity ultrasonication for antibacterial finishing

Zou, Haizhong; Lin, Baofeng; Xu, Chuanhui; Lin, Minjie; Zhan, Wei

doi:10.1007/s10570-017-1634-x

Cited by 21 publications

(14 citation statements)

References 41 publications

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“…The FTIR spectrum of the chitin nanopowder was dominated by peaks at 1660 and 1627 cm −1 , which are assigned to CO stretching modes (amide I bands). The peak at 1553 cm −1 is a NH bending vibration (amide II band), and the intense feature at 1011 cm −1 is due to CO stretching vibrations of the glucosamine units along the chitin backbone. The peaks at 3444 and 3259 cm −1 are assigned to OH and NH stretching vibrations, respectively.…”

Section: Resultsmentioning

confidence: 99%

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Meng

Xie

Waterhouse

et al. 2019

J of Applied Polymer Sci

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The accumulation of nonbiodegradable petrochemical-based polymers in the environment motivates the development and use of low-cost, eco-friendly, and biodegradable polymers. A series of biodegradable poly(butylene adipate-co-terephthalate) composites reinforced by sustainably sourced nanochitin were successfully prepared using melt blending and compression molding methods. Structural, thermal, and mechanical characterizations of poly(butylene adipate-co-terephthalate) (PBAT)/nanochitin composites were performed. SEM revealed that the nanochitin was uniformly dispersed throughout the PBAT matrix at low contents (<2 wt %), while DSC analyses revealed a corresponding increase in the crystallinity (32.6% enhancement) of the PBAT matrix. The tensile strength and elongation at break of the PBAT/nanochitin composite containing 0.5 wt % nanochitin were higher by 82.5 and 64.2%, respectively, compared with pristine PBAT. The Chitin-0.5 composite also showed improved thermal stability compared with PBAT (the char yield improved by 8%) due to the uniform dispersion of nanochitin in the PBAT matrix. The enhanced performance of the PBAT/nanochitin composites, prepared without an added compatibilizer, informs the development of improved biodegradable PBATbased polymers.

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Section: Resultsmentioning

confidence: 99%

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Meng

Xie

Waterhouse

et al. 2019

J of Applied Polymer Sci

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“…[ 58 ] Ultrasound can not only make chitin powders into chitin fibers, but also make chitin gels change into nanofibers dimension ( Figure ). [ 59 ] Ultrasound can be used alone, or used in combination with other treatment methods to make the nanofibers better dispersed in water. [ 39–43,51–56 ]…”

Section: Preparation Methods Of Nano‐chitinmentioning

confidence: 99%

“…A model description of ultrasonic effect on chitin gel (left); SEM micrographs of dispersed chitin at different ultrasonic duration (right): 0 min a), 150 min b), 270 min c) and 210 min d). Reprinted by permission from [Springer Nature]: [Springer Nature] [Cellulose] [ 59 ] [COPYRIGHT] (2018).…”

Section: Preparation Methods Of Nano‐chitinmentioning

confidence: 99%

“…[58] Ultrasound can not only make chitin powders into chitin fibers, but also make chitin gels change into nanofibers dimension ( Figure 7). [59] Ultrasound can be used alone, or used in combination with other treatment methods to make the nanofibers better dispersed in water. [39][40][41][42][43][51][52][53][54][55][56] Crustacean exoskeletons consist of chitin nanofibrils, proteins and minerals, and the purified chitin nanofibers can be separated by simple mechanical grinding.…”

Section: Mechanical Treatmentmentioning

confidence: 99%

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Recent Progress in Preparation and Application of Nano‐Chitin Materials

Yang

Liu

Pei

et al. 2020

Energy & Environ Materials

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Chitin is a kind of natural macromolecule material which was first discovered in mushrooms and was widely found in the shells of crustaceans and arthropods, the cell walls of fungi (yeast and mold) and algae, and the mollusks. The original chitin in nature usually has an antiparallel molecular chain alignment forming nanofibers connected by inter-and intramolecular hydrogen bonds. These microfibers consist of nanofibers about 2-5 nm in diameter, and about 300 nm long, embedded by protein matrices. Due to their unique dimensional, optical, mechanical, and other characteristics, the preparation of nano-chitin materials is an important subject. It is possible to extract nano-chitins from their sources with various methods, including acid hydrolysis, mechanical disintegration, TEMPO-mediated oxidation, electrospinning, and others. In this article, the latest progress in recent years in the preparation and applications of nano-chitin were reviewed. The morphology of the nano-chitins obtained from the above methods was presented. The advantages and disadvantages of each method were analyzed. An overview of applications of nano-chitins was discussed, including biomedicine, food applications, water treatment, green electronic materials, enzyme immobilization carriers, cotton textile materials, cosmetics, and others. REVIEW Nano-Chitin Materials

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“…Series of chitosan-based waterborne polyurethane improve tear strength and antimicrobial activity of polyester cotton dyed and printed fabrics [96] Chitosan and herbal extract of Aristolochia bracteolate as medical textile product (band aid) [97] Eco-friendly antimicrobial chitosan-based water dispersible polyurethanes finishes [98] Chitin nanofibers for antibacterial finishing application [99] Batteries Chitosan networks crosslinked with citric acid or polymeric carboxylic acids as binders for silicon/graphite composite electrodes in lithium ion batteries [100] Molybdenum disulfide-coated nitrogen-doped mesoporous carbon sphere/sulfur composite cathode and carbon nanotube/chitosan modified separator promoting lithium sulfur batteries [101] Chitosan/epoxidized natural rubber networks by cross-linking as a binder material [102] Highly-crystalline lithium titanate nanoparticles with N-doped carbon-coating and chitosan (as carbon and nitrogen source) [103] Chitosan composite carbon material with high specific electrochemical performance of lead-carbon battery [104] Biomedical and Pharmaceutical Applications…”

Section: Field Examplesmentioning

confidence: 99%

Chitin and Chitosans: Characteristics, Eco-Friendly Processes and Applications in Cosmetic Science

Casadidio

Peregrina

Gigliobianco

et al. 2019

Preprint

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Huge amounts of chitin and chitosans can be found in the biosphere as important constituent of the exoskeleton of many organisms, as well as waste by worldwide seafood companies. Nowadays, politicians, environmentalists, and industrialists encouraged the use of these marine polysaccharides as renewable source, particularly when developed by alternative eco-friendly processes, especially in the production of regular cosmetics. The aim of this review is to outline the physicochemical and biological properties and the different bioextraction methods of chitin and chitosans sources, focusing on enzymatic deproteinization, bacteria fermentation, and enzymatic deacetylation methods. Thanks to their biodegradability, non-toxicity, biocompatibility, and bioactivity, the application of these marine polymers is widely used in the contemporary manufacturing of biomedical and pharmaceutical products. In the end, advanced cosmetic products based on chitin and chitosans are presented, analyzing different therapeutic aspects about skin, hair, nail, and oral care. The innovative formulations described can be considered as excellent solutions regarding problems in the various body anatomical sectors.

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Preparation and characterization of individual chitin nanofibers with high stability from chitin gels by low-intensity ultrasonication for antibacterial finishing

Cited by 21 publications

References 41 publications

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Recent Progress in Preparation and Application of Nano‐Chitin Materials

Chitin and Chitosans: Characteristics, Eco-Friendly Processes and Applications in Cosmetic Science

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