Preparation of millimeter-long cellulose I nanofibers with diameters of 30–80nm from bamboo fibers

Chen, Wenshuai; Yu, Haipeng; Liu, Yixing

doi:10.1016/j.carbpol.2011.04.061

Cited by 186 publications

(105 citation statements)

References 51 publications

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“…[5] (d) TEM micrograph of nanocellulose after treated by high intensity ultrasonication. [6] (e,f) AFM and TEM micrograph of TEMPO-oxidized nanocellulose. [7,8] Structure and properties of nanocellulose Nanocellulose can be individualized from many kinds of natural plant fibers such as wood.…”

Section: Figurementioning

confidence: 99%

“…Next, the cellulose pulps were subjected to nanofibrillation via strong acid hydrolysis, high intensity ultrasonication, TEMPO-mediated oxidation, and mechanical treatment using a high-pressure homogenizer, a grinder, or a high speed blender, resulting in nanocellulose with different structures, shaped and surface chemistry (Figure 2). [4][5][6][7][8] For example, Elazzouzi-Hafraoui et al fabricated nanocellulose (cellulose nanocrystals) by the sulfuric acid hydrolysis of cellulose from cotton, Avicel, and tunicate. [4] Nanocellulose from cotton and Avicel have a length between 100 and 300 nm (Figure 2a,b), whereas those from tunicin are several micrometers long and have a whisker-like shape.…”

Section: Figurementioning

confidence: 99%

“…[6] To prepare homogeneous nanocellulose colloids, Isogai et al disintegrated never-dried native celluloses after oxidation mediated by the TEMPO followed by a homogenizing mechanical treatment, resulting in individualized, high aspect ratio and slender nanocellulose (Figure 2e). [7,8] Figure 3 (a-e) The cell structures and compressive stress-strain curves of nanocellulose-reinforced amylopectin foams, [9] (f) Digital photo and SEM image of TEMPO-oxidized nanocellulose aerogel, [10] (g) Functionalization of nanocellulose aerogels using conjugated polymers, [11] (h) ) Optical micrographs of LbL-functionalized nanocellulose aerogels in the dry state, and the corresponding chemical formulas of the functional polyanion used in the LbL.…”

Section: Figurementioning

confidence: 99%

See 2 more Smart Citations

Green Foams/Aerogels Based on Nanocellulose derived from Natural Plant Fibers

Chen¹,

Cao²,

Li³

et al. 2016

Proceedings of the 2016 International Conference on Civil, Transportation and Environment

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Abstract. Green foams/aerogels based on nanocellulose derived from natural plant fibers have been extensively studied because of their great potential for applications in energy adsorption, energy storage, template, thermal insulation, sensing, and water purification. Progress in fabricating foams/aerogels using nanocellulose as reinforcing fillers or building blocks is reviewed. Firstly, structure and properties of nanocellulose is discussed. Additionally, by means of material classification, various approaches for fabricate foams/aerogels with various types of nanocellulose are introduced. Nanocellulose plays a critical role on the structural, mechanical properties, thermal properties and further functionalizations of foams/aerogels.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Green Foams/Aerogels Based on Nanocellulose derived from Natural Plant Fibers

Chen¹,

Cao²,

Li³

et al. 2016

Proceedings of the 2016 International Conference on Civil, Transportation and Environment

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“…are attributed to C-H stretching and the bending of CH 2 groups, respectively (Chen et al, 2011b), its intensities are decreased or even disappeared with the conversion of CH 2 OH into carboxylate groups. Meanwhile, the intensity of a band at 900 cm …”

Section: Ft-ir Spectroscopy Analysismentioning

confidence: 99%

The Preparation of Soluble Cellouronic Acid Sodium Salt by 4-Acetamide-TEMPO Mediated Oxidation of Ultrasound-Pretreated Parenchyma Cellulose from Bagasse Pith

Gao¹,

Zhang²,

Peng³

2015

Archives of Acoustics

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The parenchyma cellulose isolated from bagasse pith was used as an alternative resource for preparation of water-soluble cellouronic acid sodium salt (CAS). The influence of ultrasound treatment on the cellulose was investigated for obtaining CAS by regioselective oxidization using 4-acetamide-TEMPO and NaClO with NaClO2 as a primary oxidant in an aqueous buffer at pH 6.0. The yield, carboxylate content and polymerization degree (DP) of CAS were measured as a function of ultrasonic power, agitating time and cellulose consistency by an orthogonal test. The ultrasound-treated conditions were further improved by discussion of ultrasonic power, the most important factor influencing the yield and DP. An optimized CAS yield of 72.9% with DP value (DPv) of 212 was found when the ultrasonic strength is 550 W, agitating time is 3 h and cellulose consistency is 2.0%. The oxidation reactivity of cellulose was improved by ultrasonic irradiation, whereas no significant changes in crystallinity of cellulose were measured after ultrasonic treatment. Moreover, the ultrasound treatment has a greater effect on yielding CAS from parenchyma cellulose than from bagasse fibrous' one. The CAS was further characterized by Fourier transform infrared spectroscopy (FT-IR) and Scanning electron microscopy (SEM).

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“…There are, mechanical treatment which involves grinding [2], chemical treatment [8], biological treatment involving enzyme-assisted hydrolysis [9] as well as combination of two or more of the aforementioned methods. Most of the treatments used highly aggressive hydrolysis and/or shearing force during fibrillation which often resulted in short fiber length of the cellulose obtained [10]. Thus, this is undesirable.…”

Section: Matec Matecmentioning

confidence: 99%

Extraction of Continuous Fiber from Mengkuang Leaves: The Influence of Process Parameters during Alkaline Treatment

Hamizol

Yusoff

Latif

2014

MATEC Web of Conferences

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Abstract. Currently, natural cellulose fiber composite is a promising prospect in the composite world. However, achieving uniform strength in natural fiber composite is a challenge due to limited fiber length and its random orientation in the composite. Thus, the focus of this paper was to obtain a continuous cellulose fiber from mengkuang leaves using chemical extraction process. The chemical extraction involved alkaline treatment of the mengkuang leave followed by bleaching. This paper focused on extraction using sodium hydroxide (NaOH) and its process parameters. The process parameters of the extraction were varied in terms of concentration of NaOH solution and also the soaking time. The texture and structure of the chemically purified continuous cellulose fiber were observed by visual inspection. Detailed microstructural analysis was carried out using Field Emission Scanning Electron Microscopy (FESEM) while chemical composition analysis in term of cellulose percentage was conducted using Technical Association of the Pulp and Paper Industry (TAPPI); TAPPI T203. Preliminary results showed that increment in cellulose percentage when the concentration of NaOH and soaking time were increased.

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Preparation of millimeter-long cellulose I nanofibers with diameters of 30–80nm from bamboo fibers

Cited by 186 publications

References 51 publications

Green Foams/Aerogels Based on Nanocellulose derived from Natural Plant Fibers

Green Foams/Aerogels Based on Nanocellulose derived from Natural Plant Fibers

The Preparation of Soluble Cellouronic Acid Sodium Salt by 4-Acetamide-TEMPO Mediated Oxidation of Ultrasound-Pretreated Parenchyma Cellulose from Bagasse Pith

Extraction of Continuous Fiber from Mengkuang Leaves: The Influence of Process Parameters during Alkaline Treatment

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