The use of cellulose nanofibres to reduce the wet strength polymer quantity for development of cleaner filters

Onur, Aysu; Ng, Aaron; Garnier, Gil; Batchelor, Warren

doi:10.1016/j.jclepro.2019.01.017

Cited by 27 publications

(16 citation statements)

References 22 publications

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“…NC and its derivatives-based materials have been widely used in food (Velasquez-Cock et al 2019), paper (Espinosa et al 2016), and composite materials (Pei et al 2011), especially in the paper industry. However, there are still some deficiencies in the paper industry, such as the poor retention of NC (Hollertz et al 2017); forming a tightly entangled network structure of the slender filaments is favoured for recycling but may cause drainage problems (Ahola et al 2008;Onur et al 2019); its limited adsorption capacity to pulp fibres and moderate reinforcement effect, which often makes it difficult to achieve specific strength requirements (Yang et al 2017). Some researchers have addressed these negative effects by modifying the NC, adding fillers or multi-reinforced systems by considering the complex interactions between cellulose pulp, NC, mineral fillers and various commonly used additives (Espinosa et al 2019;He et al 2017;Khalil et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Grafting nanocellulose with diethylenetriaminepentaacetic acid and chitosan as additive for enhancing recycled OCC pulp fibres

Zhang

et al. 2022

Cellulose

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This paper develops a novel paper additive for effectively recycling old corrugated container (OCC) by functionalizing nanocellulose (NC) with diethylenetriaminepentaacetic acid (DTPA) and chitosan (CS), and investigate the reinforcing mechanisms and effect of the developed additive on the physical properties of recycled OCC pulp handsheets. The tensile, tear and burst index, air permeability, tensile energy absorption (TEA), and drainage performance of the recycled OCC handsheets are examined. Fourier transform infrared FTIR) spectroscopy, thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM) are used for the chemical and microstructure characterization of both NC based additives and paper from recycled OCC pulp. The results show that functional groups on the NC based additive, such as carboxyl, amino and hydroxyl groups, can bond with the hydroxyl groups on the recycled OCC fibres to generate a chemical bond. This leads to an increase in the crosslinks and bonding area between the fibres, which increases their tensile strength and improves their recycling rate. SEM shows that the paper with NC based additives had tighter inter-fibre bonds and smaller paper pore structure. Addition of 0.3% NC-DTPA-CS additive results in optimal properties of the recycled OCC paper with an increase by 31.64%, 22.28% and 36.6% of tensile index, tear index, burst index respectively, and the air permeability decreases by 36.92%. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Grafting nanocellulose with diethylenetriaminepentaacetic acid and chitosan as additive for enhancing recycled OCC pulp fibres

Zhang

et al. 2022

Cellulose

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“…Thus, more chemical additives were chosen instead of beating or re ning, such as dry strength agent (cationic polyacrylamide, CPAM) (Djafari Petroudy et al 2014) and wet strength agent (polyamide amine-epichlorohydrin, PAE) (Obokata et al 2005; Obokata and Isogai 2007; Su et al 2012). Although the use of chemical additives has greatly improved the strength, it is not environmentally friendly, owing to the production of by-products in the manufacture and use process, and it is also not conducive to the recycling of paper (Hagiopol and Johnston 2011;Onur et al 2019). In addition, chemicals could induce an increase in wastewater load.…”

Section: Introductionmentioning

confidence: 99%

Reinforcement of Cellulose Nanofibers On the Stiffness and Strength of Composite Sheets Under Dry and Wet Conditions

Liu

Yano

Abe

2022

Preprint

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The objective of this study was to evaluate how a wide range (0–100%) of cellulose nanofiber (CNF) addition affects the mechanical properties of composite sheets made of bleached pulp fibers and CNFs. It was found that adding CNFs could reduce the porosity of the sheets, thus increasing the dry Young’s modulus within the CNF addition range of 0–100%, whereas the dry specific Young’s modulus of all the sheets was constant. The dry tensile strength of the sheets increased as the CNF addition increased to 70% because of the increased hydrogen bond density between the pulp fibers. However, there was no further improvement in the dry tensile strength when the CNF addition was more than 70%. Although the wet Young’s modulus decreased when the CNF addition was more than 20% owing to the increase in the thickness of the sheets, the wet tensile strength of the sheets increased almost linearly as more CNFs were added up to 70%, and the maximum wet strength retention reached nearly 10% at 40% CNF addition.

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“…As NC is derived from natural bres themselves, it has the inherent property of being compatible with pulp bres. Nevertheless, it could cause some negative effects during the papermaking process, such as the poor retention of NC (Hollertz et al, 2017); forming a tightly entangled network structure of the slender laments is favour for recycling but may cause drainage problems (Ahola et al, 2008;Onur et al, 2019); its limited adsorption capacity to pulp bres and moderate reinforcement effect, which often makes it di cult to achieve speci c strength requirements (Yang et al, 2017). Some researchers have addressed these negative effects by modifying the NC, adding llers or multi-reinforced systems by considering the complex interactions between cellulose pulp, NC, mineral llers and various commonly used additives (Eduardo Espinosa et al, 2019;He et al, 2017;Khalil et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Grafting Nanocellulose With Diethylenetriaminepentaacetic Acid and Chitosan As Additive for Enhancing Recycled OCC Pulp Fibres

Zhang

et al. 2021

Preprint

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This paper is to develop a novel paper additive for effectively recycling old corrugated container (OCC) by functionalizing nanocellulose (NC) with diethylenetriaminepentaacetic acid (DTPA) and chitosan (CS), and investigate the reinforcing mechanisms and effect of the developed additive on the physical properties of recycled OCC pulp handsheets. The tensile, tear and bursting strength, whiteness, air permeability, tensile energy absorption of the recycled OCC handsheets are examined. Fourier transform infrared FTIR) spectroscopy, thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM) are used for the chemical and microstructure characterization of both NC based additives and recycled OCC pulp paper. The results show that the functional groups, such as carboxyl, amino and hydroxyl groups on the NC based additives, can combine with the hydroxyl groups on the recycled OCC fibres to generate chemical bonds, which increase the crosslinks between fibres as well as the bonding area, thus enhancing their tensile strength and improving their recycling rate. SEM shows that the paper with NC based additives had tighter inter-fibre bonds and smaller paper pore structure. Addition of 0.2% NC-DTPA-CS additive results in optimal properties of the recycled OCC paper with an increase by 32%, 188%, 19% and 35% of tensile strength, tearing degree, breaking resistance and air permeability respectively.

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The use of cellulose nanofibres to reduce the wet strength polymer quantity for development of cleaner filters

Cited by 27 publications

References 22 publications

Grafting nanocellulose with diethylenetriaminepentaacetic acid and chitosan as additive for enhancing recycled OCC pulp fibres

Grafting nanocellulose with diethylenetriaminepentaacetic acid and chitosan as additive for enhancing recycled OCC pulp fibres

Reinforcement of Cellulose Nanofibers On the Stiffness and Strength of Composite Sheets Under Dry and Wet Conditions

Grafting Nanocellulose With Diethylenetriaminepentaacetic Acid and Chitosan As Additive for Enhancing Recycled OCC Pulp Fibres

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