Extraction of cellulose nano-crystals from old corrugated container fiber using phosphoric acid and enzymatic hydrolysis followed by sonication

Tang, Yanjun; Shen, Xiaochuang; Zhang, Junhua; Guo, Daliang; Kong, Fangong; Zhang, Nan

doi:10.1016/j.carbpol.2015.02.063

Cited by 188 publications

(83 citation statements)

References 45 publications

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“…However, all the nanocellulose yields prepared via Cr(III)-and Mn(II)-catalyzed hydrolysis under mild reaction were much more higher than the value reported for the hydrolysis of cellulosic materials including rice straw cellulose (16.9%) (Jiang and Hsieh 2013), microcrystalline cellulose (28.6%) (Zhou 2012), and bamboo bleached fiber (30%) (Brito et al 2012) via H2SO4 (~65 wt.%) hydrolysis procedure. A recent study (Tang et al 2015) conducted by Tang's group found that the yield of nanocellulose produced via phosphoric acid hydrolysis followed by enzymatic hydrolysis was only able to achieve a yield of 23.98% with a crystallinity of 57.8%. …”

Section: Fig 2 Xrd Patterns Of Native Cellulose Mn(ii)- and Cr(iimentioning

confidence: 99%

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Chen¹,

Lee²,

Hamid³

2016

BioResources

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Nanostructured cellulose was successfully prepared from native cellulose using a homogeneous catalytic H2SO4 hydrolysis pathway in the presence of Cr(III)-and Mn(II)-transition metal salts as the co-catalyst. The effect of transition metal salts with different valence states (Cr 3+ and Mn 2+) on the physicochemical properties (chemical characteristics, crystallinity index, nano-structure, thermal stability, and morphology) of prepared nanocellulose was investigated. Interestingly, TEM micrographs showed that the Cr(III)-treated and Mn(II)-treated nanocellulose exhibited a weblike nanostructured-surface with average diameters of 44.7 ± 13.2 nm and 58.4 ± 15.3 nm, respectively. XRD study revealed that the crystallinity of nanocellulose was increased because the catalytic degradation of the less crystalline regions of cellulose occurred at a faster rate than its crystalline phases. Cr(III)-treated nanocellulose was capable of rendering a higher crystallinity index (75.6 ± 0.1%) compared with Mn(II)-treated nanocellulose (72.3 ± 0.4%). Furthermore, a dynamic light scattering (DLS) study revealed that Cr(III)-treated nanocellulose showed a smaller distribution range (92% at 14 to 135 nm) compared with Mn(II)-treated nanocellulose (92% at 607 nm). A higher valence state for the Cr(III)-cation, with a trivalent state (+3), rendered a more effective hydrolysis reaction compared with the Mn(II)-cation, with a divalent state (+2), for preparing the nanocellulose.

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Section: Fig 2 Xrd Patterns Of Native Cellulose Mn(ii)- and Cr(iimentioning

confidence: 99%

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Chen¹,

Lee²,

Hamid³

2016

BioResources

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“…grinding (Jonoobi et al, 2015), ultrasonic treatment , and steam explosion (Cherian et al, 2010)), or enzyme-assisted methods (Filson, Dawson-Andoh, & Schwegler-Berry, 2009) are applied. But physical approaches usually consume much energy, and enzymes are expensive and enzymatic hydrolysis is usually time-consuming (Tang et al, 2015). Most recently, solid acids were used to replace the strong liquid acids to manufacture CNC, because solid acids could be more easily and safely handled, cause less waste, and could be readily regenerated for reuse (Tang, Huang, Ou, Chen, & Chen, 2014).…”

Section: Introductionmentioning

confidence: 99%

Cellulose nanocrystals prepared via formic acid hydrolysis followed by TEMPO-mediated oxidation

Kronlund

et al. 2015

Carbohydrate Polymers

205

103

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Cellulose nanocrystals (CNCs) as a renewable and biodegradable nanomaterial have wide application value. In this work, CNCs were extracted from bleached chemical pulp using two stages of isolation (i.e. formic acid (FA) hydrolysis and 2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPO) mediated oxidation) under mild conditions. In the first stage, FA was used to remove hemicellulose, swell cellulose fibers, and release CNCs. The FA could be readily recovered and reused. In the second stage, the CNCs isolated by FA were further modified by TEMPO-mediated oxidation to increase the surface charge of CNCs. It was found that the modified CNCs with more ordered crystal structure and higher surface charge had better redispersibility and higher viscosity in aqueous phase. Therefore, the modified CNCs could be more effective when used as rheology modifier in the fields of water based coating, paint, food etc.

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“…The typical method for the preparation of CNCs is inorganic strong acid hydrolysis, including sulphuric (Habibi 2014;Tang et al 2013), hydrochloric (de Oliveira et al 2012), nitric (Cao et al 2015), phosphoric acids (Camarero Espinosa et al 2013;Tang et al 2015) or their mixtures hydrolysis (Li et al 2013d). In the process of acid hydrolysis, the amorphous fraction of cellulose was dissolved and rod shaped crystallites were obtained (Eyholzer et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of thermally stable cellulose nanocrystals via a sustainable approach of FeCl3-catalyzed formic acid hydrolysis

Liu

et al. 2016

Cellulose

158

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Cellulose nanocrystals (CNCs) can be used as building blocks for the production of many renewable and sustainable nanomaterials. In this work, CNCs were produced from bleached eucalyptus kraft pulp with a high yield over 75 % via FeCl 3 -catalyzed formic acid (FA) hydrolysis process. It was found that the particle size of resultant CNC products (F-CNC) decreased with the increase of FeCl 3 dosage in FA hydrolysis, and a maximum crystallinity index of about 75 % could be achieved when the dose of FeCl 3 was 0.015 M (i.e. about 7 % based on the weight of starting material). Thermogravimetric analyses revealed that F-CNC exhibited a much higher thermal stability (the decomposition temperature was over 260°C) than S-CNC prepared by typical sulfuric acid hydrolysis. In the FeCl 3 -catalyzed FA hydrolysis process, FA could be easily recovered and reused, and FeCl 3 could be transferred to Fe(OH) 3 as a high value-added product. Thus, the FeCl 3 -catalyzed FA hydrolysis process could be sustainable and economically feasible. In addition, F-CNC could be well dispersed in DMSO and its dispersibility in water could be improved by a cationic surface modification.

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Extraction of cellulose nano-crystals from old corrugated container fiber using phosphoric acid and enzymatic hydrolysis followed by sonication

Cited by 188 publications

References 45 publications

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Cellulose nanocrystals prepared via formic acid hydrolysis followed by TEMPO-mediated oxidation

Preparation and characterization of thermally stable cellulose nanocrystals via a sustainable approach of FeCl3-catalyzed formic acid hydrolysis

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