Enzymatically produced nano-ordered short elements containing cellulose Iβ crystalline domains

Hayashi, Noriko; Kondo, Tetsuo; Ishihara, Mitsuro

doi:10.1016/j.carbpol.2005.04.018

Cited by 110 publications

(58 citation statements)

References 21 publications

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“…Figures 7 and 8 show results of FTIR spectra obtained for kenaf fiber, wheat straw, bleached cellulose, cellulose after ball milling at different time intervals. Peaks observed at wavenumber 3275 cm 21 are indicative of OAH stretching band, which is due to the vibrations of the hydrogen bonded hydroxyl group.…”

Section: Resultsmentioning

confidence: 98%

“…The peaks at 2920 cm 21 and 2854 cm 21 were due to aliphatic saturated CAH stretching vibration. The presence of the peak at 1734 cm 21 in kenaf fiber and wheat straw is associated with the C@O stretching vibration of the acetyl and uronic ester groups.…”

Section: 16mentioning

confidence: 98%

“…Shimadzu FTIR 8400s equipped with MIRacle TM attenuated total reflection (ATR) was used and scans were acquired in between 650-3500 cm 21 with a resolution of 4 cm 21 .…”

Section: Fourier Transform-infrared (Ftir) Spectroscopymentioning

confidence: 99%

“…15 Several methods have been utilized for isolation of cellulose nanoparticles (cellulose nanofibers, cellulose microfibrils, and cellulose nanowhiskers) from lignocelluloses. These methods include acid hydrolysis treatment 3,[16][17][18] ; high-pressure homogenizer 19,20 ; enzyme assisted hydrolysis 21,22 ; 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO) catalyzed oxidation 23,24 ; and ultrasonication technique. [25][26][27] All of these methods isolate cellulose nanofibers depending upon type of raw material and also the pretreatment process.…”

Section: Introductionmentioning

confidence: 99%

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A novel approach for extracting cellulose nanofibers from lignocellulosic biomass by ball milling combined with chemical treatment

Nuruddin¹,

Hosur²,

Uddin³

et al. 2015

J of Applied Polymer Sci

121

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Cellulose nanofibers (CNFs) were isolated from kenaf fibers and wheat straw by formic acid (FA)/acetic acid (AA), peroxyformic acid (PFA)/peroxyacetic acid (PAA), hydrogen peroxide (H 2 O 2 ) treatment; and subsequently through ball milling treatment. Characterization of extracted cellulose and cellulose nanofibers was carried out through Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). TEM images showed that extracted cellulose nanofibers had diameter in the range of 8-100 nm. FTIR and XRD results implied that hemicellulose and lignin were mostly removed from lignocellulosic biomass with an increase in crystallinity, and isolation of cellulose nanofibers was successful. The TGA results showed that decomposition temperature of cellulose nanofibers increased by about 278C when compared with that of untreated lignocellulosic biomass. No significant change was observed in the decomposition temperature of bleached celluloses after ball milling.

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Section: Resultsmentioning

confidence: 98%

Section: 16mentioning

confidence: 98%

“…Shimadzu FTIR 8400s equipped with MIRacle TM attenuated total reflection (ATR) was used and scans were acquired in between 650-3500 cm 21 with a resolution of 4 cm 21 .…”

Section: Fourier Transform-infrared (Ftir) Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel approach for extracting cellulose nanofibers from lignocellulosic biomass by ball milling combined with chemical treatment

Nuruddin¹,

Hosur²,

Uddin³

et al. 2015

J of Applied Polymer Sci

121

View full text Add to dashboard Cite

show abstract

“…Physical preparation is relatively simple, but consumes more energy. There are two methods for biological preparation of nanocellulose: bacterial production as a bottom-up strategy (Gardner et al, 2008;Tanpichai et al, 2012) and enzyme pretreatment as a top-down way (Hayashi et al, 2005;Janardhnan and Sain, 2007;Satyamurthy et al, 2011;Siqueira et al, 2010). In the bacterial method, bacteria directly produce nanoscale cellulose.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose isolation from Amorpha fruticosa by an enzyme- assisted pretreatment

Zhuo¹,

Wei²,

Xu³

et al. 2017

Appl Env Biotechnol

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Nanocellulose has many advantages, such as a wide range of sources of raw materials, renewability, biodegradability, high aspect ratio and large specific surface area. It can be potentially used in medicine, electronics, information technology, energy industry, aerospace and some other high-technological fields. For preparation of nanocellulose, it is particularly important to separate nanocellulose from raw materials by an environment-friendly method with environmental protection awareness. Consequently, we here report an effective and environmental friendly method to isolate nanocellulose from a shrub plant, i.e., Amorpha fruticosa Linn. Firstly, the plant fiber is pretreated with chemicals to remove lignin and hemicellulose; then the derived purified cellulose is pretreated with enzyme hydrolysis, followed by slight treatment of high-pressure homogenization. The results showed that with the assistance of enzyme pretreatment, effective isolation of nanocellulose could be achieved, resulting in materials with a uniform diameter distribution and an average value of about 10 nm. The aspect ratio of the derived nanocellulose is greater than 1000. Such results showed that the method was green and effective for nanocellulose isolation, and the derived biomaterial as a unique biocompatible and high-strength biomass nanomaterial could be used in biomedical, environmental protection and other fields.

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Nanocomposites Based on Starch and Fibers of Natural Origin

Satyanarayana¹,

Woehl²,

Ramos³

et al. 2011

Handbook of Bioplastics and Biocomposites Engineering Applications

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Enzymatically produced nano-ordered short elements containing cellulose Iβ crystalline domains

Cited by 110 publications

References 21 publications

A novel approach for extracting cellulose nanofibers from lignocellulosic biomass by ball milling combined with chemical treatment

A novel approach for extracting cellulose nanofibers from lignocellulosic biomass by ball milling combined with chemical treatment

Nanocellulose isolation from Amorpha fruticosa by an enzyme- assisted pretreatment

Nanocomposites Based on Starch and Fibers of Natural Origin

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