Preparation by combined enzymatic and mechanical treatment and characterization of nanofibrillated cotton fibers

Hideno, Akihiro; Abe, Kentaro; Uchimura, Hiromi; Yano, Hiroyuki

doi:10.1007/s10570-016-1075-y

Cited by 21 publications

(18 citation statements)

References 31 publications

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“…After a refinement (using a refiner) and a high-pressure homogenization, CNFs with a width of ~5-6 nm (single CNFs) and ~10-20 nm (CNF bundles) were produced [174]. Recently, cellulase was used to cut and swell cotton fibers through breakage of the hydrogen bonds between CNFs [175]. After pretreated with cellulase, mainly consisting of cellobiohydrolase, the successful mechanical nanofibrillation of the cotton boll and dried cotton was achieved, resulting in CNFs with a width of 10-50 nm, although a few CNF bundles of around 100 nm remained.…”

Section: Mechanical Nanofibrillationmentioning

confidence: 99%

Biopolymer nanofibrils: Structure, modeling, preparation, and applications

Ling

Chen

Fan

et al. 2018

Progress in Polymer Science

357

263

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Biopolymer nanofibrils exhibit exceptional mechanical properties with a unique combination of strength and toughness, while also presenting biological functions that interact with the surrounding environment. These features of biopolymer nanofibrils profit from their hierarchical structures that spun angstrom to hundreds of nanometer scales. To maintain these unique structural features and to directly utilize these natural supramolecular assemblies, a variety of new methods have been developed to produce biopolymer nanofibrils. In particular, cellulose nanofibrils (CNFs), chitin nanofibrils (ChNFs), silk nanofibrils (SNFs) and collagen nanofibrils (CoNFs), as the four most abundant biopolymer nanofibrils on earth, have been the focus of research in recent years due to their renewable features, wide availability, low-cost, biocompatibility, and biodegradability. A series of top-down and bottom-up strategies have been accessed to exfoliate and regenerate these nanofibrils for versatile advanced applications. In this review, we first summarize the structures of biopolymer nanofibrils in nature and outline their related computational models with the aim of disclosing fundamental structure-property relationships in biological materials. Then, we discuss the underlying methods used for the preparation of CNFs, ChNFs, SNF and CoNFs, and discuss emerging applications for these biopolymer nanofibrils.

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Section: Mechanical Nanofibrillationmentioning

confidence: 99%

Biopolymer nanofibrils: Structure, modeling, preparation, and applications

Ling

Chen

Fan

et al. 2018

Progress in Polymer Science

357

263

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“…They could cut and swell the cotton fibers and significantly reduce the interaction between CeNFs. Thus, CeNFs with a width of 10–50 nm were produced after mechanical isolation of the pretreated cotton fibers, with a few remained CeNF bundles of around 100 nm …”

Section: Top‐down Isolation Techniquesmentioning

confidence: 99%

“…www.advancedsciencenews.com www.biotechnology-journal.com the pretreated cotton fibers, with a few remained CeNF bundles of around 100 nm. [78] Although mechanical-, chemical-, and enzymatic pretreatments have significantly improved isolation degree of various cellulose sources, these approaches cannot exfoliate cellulose fiber into single nanofibril scale, i.e., elemental fibrils with a width of 3-4 nm. [6,36,37] To improve isolation degree, 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation of cellulose pulp was pursued.…”

Section: Nanocellulose Isolationmentioning

confidence: 99%

“…By integrating endoglucanase hydrolysis and high‐pressure homogenization processing, CeNFs with ≈10–30 nm (or even 5–6 nm in some reports) in width and several micrometers in length have been successfully produced. Recently, cellulose was applied to pretreat cotton fibers, as a type of enzyme that can brake noncovalent interactions presented in the amorphous structure of cellulose. They could cut and swell the cotton fibers and significantly reduce the interaction between CeNFs.…”

Section: Top‐down Isolation Techniquesmentioning

confidence: 99%

“…The data are extracted from refs [6,[36][37][38][39][41][42][43][44][45][46][50][51][52][53][64][65][66][68][69][75][76][77][78][79][80][81][82][83][108][109][110][111][112][114][115][116][117][118][119][120][121][122][124][125][126].…”

mentioning

confidence: 99%

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Nanobiopolymers Fabrication and Their Life Cycle Assessments

Yang

Zhang

et al. 2018

Biotechnology Journal

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Living organisms produced nanopolymers (nanobiopolymers for short), such as nanocellulose, nanochitin, nanosilk, nanostarch, and microbial nanobiopolymers, having received widely scientific and engineering interests in recent years. Compare with petroleum-based polymers, biopolymers are sustainable and biodegradable. The unique structural features that stem from nanosized effects, such as ultrahigh aspect ratio and length-diameter ratio, further endow nanobiopolymers with high transparence and versatile processability. To fabricate these nanobiopolymers, a variety of mechanical, chemical, and synthetic biology techniques have been developed. The applications of the isolated nanobiopolymers have been extended from polymer fillers into wide emerging high-tech fields, such as biomedical devices, bioplastics, display panels, ultrafiltration membranes, energy storage devices, and catalytic supports. Accordingly, in the review, the authors first introduce isolation techniques to fabricate nanocellulose, nanochitin, nanosilk, and nanostarch. Then, the authors summarized the nanobiopolymers produced from biosynthetic pathway, including microbial polyamides, polysaccharides, and polyesters. On the other hand, most of these techniques require high energy consumption and usage of chemical reagents. In this regard, life cycle assessment offered a quantitative route to precisely evaluate and compare environmental benefits of different artificial isolation approaches, which are also summarized in the second section of the review.

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Assessment of cellulose structural variety from different origins using near infrared spectroscopy

Horikawa

2017

Cellulose

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Preparation by combined enzymatic and mechanical treatment and characterization of nanofibrillated cotton fibers

Cited by 21 publications

References 31 publications

Biopolymer nanofibrils: Structure, modeling, preparation, and applications

Biopolymer nanofibrils: Structure, modeling, preparation, and applications

Nanobiopolymers Fabrication and Their Life Cycle Assessments

Assessment of cellulose structural variety from different origins using near infrared spectroscopy

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