Deep eutectic solvent system based on choline chloride-urea as a pre-treatment for nanofibrillation of wood cellulose

Sirviö, Juho Antti; Visanko, Miikka; Liimatainen, Henrikki

doi:10.1039/c5gc00398a

Cited by 241 publications

(154 citation statements)

References 35 publications

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“…7). The slight blue shifts, increased peak width, enhanced peak strength, and newly occurred small peaks in the fingerprint region of the regenerated cellulose all demonstrate the breaking of hydrogen bonds in cellulose, which was consistent with previous studies (Sirviö et al 2015;Rashid et al 2016). The fibrils of regenerated cellulose (Fig.…”

Section: Dissolving Of Cellulose In Allyl-functionalized Dessupporting

confidence: 79%

Synthesis of a Novel Allyl-Functionalized Deep Eutectic Solvent to Promote Dissolution of Cellulose

Ren¹,

Chen²,

Zhao³

et al. 2016

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Section: Dissolving Of Cellulose In Allyl-functionalized Dessupporting

confidence: 79%

Synthesis of a Novel Allyl-Functionalized Deep Eutectic Solvent to Promote Dissolution of Cellulose

Ren¹,

Chen²,

Zhao³

et al. 2016

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“…The formation of cellulose gel is commonly associated with swelling and dissolution. It has been proposed that ChCl/urea interacts with cellulose; however, there are no studies on how ChCl/urea affects the structure of cellulose (Abbott et al 2006;Sirviö et al 2015).…”

Section: Effect Of Chcl/urea On Pulp Propertiesmentioning

confidence: 99%

Method for Forming Pulp Fibre Yarns Developed by a Design-driven Process

Tenhunen¹,

Hakalahti²,

Kouko³

et al. 2016

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A simple and inexpensive method for producing water-stable pulp fibre yarns using a deep eutectic mixture composed of choline chloride and urea (ChCl/urea) was developed in this work. Deep eutectic solvents (DESs) are eutectic mixtures consisting of two or more components that together have a lower melting point than the individual components. DESs have been previously studied with respect to cellulose dissolution, functionalisation, and pre-treatment. This new method uses a mixture of choline chloride and urea, which is used as a swelling and dispersing agent for the pulp fibres in the yarn-forming process. Although the pulp seemed to form a gel when dispersed in ChCl/urea, the ultrastructure of the pulp was not affected. To enable water stability, pulp fibres were crosslinked by esterification using polyacrylic acid. ChCl/urea could be easily recycled and reused by distillation. The novel process described in this study enables utilisation of pulp fibres in textile production without modification or dissolution and shortening of the textile value chain. An interdisciplinary approach was used, where potential applications were explored simultaneously with material development from process development to the early phase prototyping.

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“…Due to its low cost, low toxicity, and recyclability, DES has been widely used in various fields [232]. Sirviö and workers proposed a bio-based DES consisting of urea and choline chloride (molar ratio of 2 : 1) which could be used to the pretreatment of cellulose pulp [233]. Li and coworkers used the urea-based DES as the pretreatment for the preparation of CNFs [234].…”

Section: Deep Eutectic Solvent Pretreatmentsmentioning

confidence: 99%

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Xie

Yang

2018

International Journal of Polymer Science

219

128

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The recent strategies in preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) were described. CNCs and CNFs are two types of nanocelluloses (NCs), and they possess various superior properties, such as large specific surface area, high tensile strength and stiffness, low density, and low thermal expansion coefficient. Due to various applications in biomedical engineering, food, sensor, packaging, and so on, there are many studies conducted on CNCs and CNFs. In this review, various methods of preparation of CNCs and CNFs are summarized, including mechanical, chemical, and biological methods. The methods of pretreatment of cellulose are described in view of the benefits to fibrillation.

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Deep eutectic solvent system based on choline chloride-urea as a pre-treatment for nanofibrillation of wood cellulose

Abstract: Deep eutectic solvent of choline chloride-urea was used as a sustainable pre-treatment media prior mechanical nanofibrillation of wood cellulose.

Cited by 241 publications

References 35 publications

Synthesis of a Novel Allyl-Functionalized Deep Eutectic Solvent to Promote Dissolution of Cellulose

Synthesis of a Novel Allyl-Functionalized Deep Eutectic Solvent to Promote Dissolution of Cellulose

Method for Forming Pulp Fibre Yarns Developed by a Design-driven Process

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

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