Individualization of cellulose nanofibers from wood using high-intensity ultrasonication combined with chemical pretreatments

Chen, Wenshuai; Yu, Haipeng; Liu, Yixing; Chen, Peng; Zhang, Mingxin; Hai, Yunfei

doi:10.1016/j.carbpol.2010.10.040

Cited by 838 publications

(453 citation statements)

References 62 publications

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“…The range of crystallinity index increased after chemical pretreatment from 15-18% to 51-55%. The increment of fiber crystallinity index is related to the removal of hemicellulose and lignin from OPMF (Jonoobi et al 2009), which led to cellulose realignment (Chen et al 2011). The crystallinity index of OPMF cellulose is comparable to that of other celluloses, as indicated in Table 3.…”

Section: Characteristics Of Opmf Cellulosementioning

confidence: 95%

Factors Affecting Spinnability of Oil Palm Mesocarp Fiber Cellulose Solution for the Production of Microfiber

Yasim-Anuar¹,

Ariffin²,

Norrrahim³

et al. 2016

BioResources

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Cellulose microfiber (MF) formation by electrospinning is affected by several factors. In this paper, fabrication of MF from oil palm mesocarp fiber (OPMF), a biomass residue abundantly available at the palm oil mill, was conducted by electrospinning. The effect of OPMF-cellulose solution properties on the spinnability of the solution was determined. Extracted cellulose from OPMF was dissolved in four different formulations of ionic liquids:DMF at cellulose concentrations of 1% to 9% (w/v). Scanning electron microscopy (SEM) analysis showed that MF formed had diameter sizes ranging from 200 to 500 nm. MF was formed only at 6% (w/v) cellulose concentration, when DMF was mixed in the solution. The results showed that cellulose concentration and viscosity played major roles in the spinnability of cellulose solution, in which too high viscosity of the cellulose solution caused failure of the electrospinning process and eventually affected the formation of MF. The characteristics of MF obtained herein suggest the potential of OPMF cellulose as a starting material for the production of MF.

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Section: Characteristics Of Opmf Cellulosementioning

confidence: 95%

Factors Affecting Spinnability of Oil Palm Mesocarp Fiber Cellulose Solution for the Production of Microfiber

Yasim-Anuar¹,

Ariffin²,

Norrrahim³

et al. 2016

BioResources

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“…There was improvement crystallinity index when the power of dispersed in water increase from 400 watt to 800 watt where high-intensity ultrasonic waves can produce a very strong mechanical oscillating power because of cavitation. The cavitation includes the formation, expansion and implosion of microscopic gas bubbles and it have effect for the molecules in a liquid in absorption ultrasonic energy [3][4]. …”

Section: Figure 2 Ftir Resultsmentioning

confidence: 99%

“…A fibrillation by oxidation-sonication has been used to produce nanocelluloses from natural fibers (hemp) and the method developed nanocellulose had wider size range (29-281 nm) and the average size (100-112 nm) [2]. Then fibrillation by two distinct stages namely, chemical process and high-intensity ultrasonication have been applied to individualize poplar wood and the achievements of fibrillation can show that the diameter of nanofibers ranged from 5 to 20 nm [3]. The similar study, culinary banana peel was explored as a source of raw material for production of cellulose nanofibers (CNFs) by different chemical treatments and high-intensity ultrasonication, can reduce size of CNFs and generated more thinner and needle-like structure [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of sonication treatment on fibrilating snake fruit (Sallaca) frond fiber

Darmanto

Rochardjo

Jamasri

et al. 2018

AIP Conference Proceedings

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Abstract. Aim of this research is to investigate influence of chemical and sonication treatment on fibrillating and mechanical properties of snake fruit frond fiber. The presence of surface impurities and the large amount of hydroxyl groups in natural fibers make less attractive for polymeric materials reinforcement. Effort to remove the impurities can be done by few treatments that consist of physical, chemical and mechanical treatment. Snake fruit frond bundle fiber were firstly subjected to chemical treatments with alkali solution, steaming at 2 bar and steam explosion at 6 bar by 40 times releasing of steam. Advanced treatment is done by flowing ultrasonic wave at 20 kHz by 90 -210 watt. The output of fibrillation can reach fiber in range 10 -25 nm compared with 10.72 µm in diameter for sonication and 6 bar in pressure of steam with 40x of rapidly steam release respectively.

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“…The reticular structure of HSC indicated that the process of purifying and bleaching had not broken the cellulose structure. 32 Moreover; the surface of HSC also exhibited a lumpish structure, which may be due to the strong intramolecular hydrogen bonds that exist in the molecule. On the other hand, the somewhat smooth surface of HSM revealed that the introduction of ethylenediamine units into cellulose units of HSC may have limited the formation of the intramolecular hydrogen bonds.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Chemical Modification of Cellulose Isolated from Underutilized Hibiscus sabdariffa via Surface Grafting: A Potential Bio-based Resource for Industrial Application

Adewuyi

Pereira

2017

Kem. Ind.

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Grafting of ethylenediamine onto Hibiscus sabdariffa cellulose was achieved via the simple reaction mechanism. The modified Hibiscus sabdariffa cellulose (HSM) and unmodified Hibiscus sabdariffa cellulose (HSC) were characterized using Fourier transformed infrared (FTIR) spectroscopy, elemental analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), particle size distribution, zeta potential, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Both HSM and HSC were also analysed for their water holding capacity, oil holding capacity, swelling capacity, and heavy metal adsorption capacity. The particle size distribution of HSC was found to be monomodal, while that of HSM was bimodal. HSM performed better than HSC in terms of oil adsorption capacity and metal adsorption capacity especially for Pb 2+ and Cd 2+ ions. HSM also performed better than some reported cellulosic materials found in literature. These properties exhibited by HSM present it as a potential resource in the food industry and in treatment of heavy metal contaminated water.

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Individualization of cellulose nanofibers from wood using high-intensity ultrasonication combined with chemical pretreatments

Cited by 838 publications

References 62 publications

Factors Affecting Spinnability of Oil Palm Mesocarp Fiber Cellulose Solution for the Production of Microfiber

Factors Affecting Spinnability of Oil Palm Mesocarp Fiber Cellulose Solution for the Production of Microfiber

Effect of sonication treatment on fibrilating snake fruit (Sallaca) frond fiber

Chemical Modification of Cellulose Isolated from Underutilized Hibiscus sabdariffa via Surface Grafting: A Potential Bio-based Resource for Industrial Application

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