Lignocellulosic micro/nanofibers from wood sawdust applied to recycled fibers for the production of paper bags

Tarrés, Quim; Pellicer, Neus; Balea, Ana; Merayo, Noemí; Negro, Carlos; Blanco, Ángeles; Mutjé, Pere

doi:10.1016/j.ijbiomac.2017.07.092

Cited by 24 publications

(8 citation statements)

References 20 publications

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“…In general, it is observed that LCNF obtained by TEMPO-mediated oxidation presents a higher nanofibrillation yield (49-70%) compared to those obtained by mechanical pretreatment (18-33%). The nanofibrillation yields of LCNF obtained by mechanical pretreatment are similar to those presented by other cellulose nanofibers produced by the same process [24][25][26][27][28], however, those obtained by TEMPO-mediated oxidation show a slightly lower yield than those shown by other authors, which usually exceed 90% [29][30][31]. This behavior is also observed in the cationic demand where the TEMPO-oxidized LCNF present considerably higher values of cationic demand.…”

Section: Lignocellulose Nanofiber Characterizationsupporting

confidence: 84%

Horticultural Plant Residues as New Source for Lignocellulose Nanofibers Isolation: Application on the Recycling Paperboard Process

et al. 2020

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Horticultural plant residues (tomato, pepper, and eggplant) were identified as new sources for lignocellulose nanofibers (LCNF). Cellulosic pulp was obtained from the different plant residues using an environmentally friendly process, energy-sustainable, simple, and with low-chemical reagent consumption. The chemical composition of the obtained pulps was analyzed in order to study its influence in the nanofibrillation process. Cellulosic fibers were subjected to two different pretreatments, mechanical and TEMPO(2,2,6,6-Tetramethyl-piperidin-1-oxyl)-mediated oxidation, followed by high-pressure homogenization to produce different lignocellulose nanofibers. Then, LCNF were deeply characterized in terms of nanofibrillation yield, cationic demand, carboxyl content, morphology, crystallinity, and thermal stability. The suitability of each raw material to produce lignocellulose nanofibers was analyzed from the point of view of each pretreatment. TEMPO-mediated oxidation was identified as a more effective pretreatment to produce LCNF, however, it produces a decrease in the thermal stability of the LCNF. The different LCNF were added as reinforcing agent on recycled paperboard and compared with the improving produced by the industrial mechanical beating. The analysis of the papersheets’ mechanical properties shows that the addition of LCNF as a reinforcing agent in the paperboard recycling process is a viable alternative to mechanical beating, achieving greater reinforcing effect and increasing the products’ life cycles.

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Section: Lignocellulose Nanofiber Characterizationsupporting

confidence: 84%

Horticultural Plant Residues as New Source for Lignocellulose Nanofibers Isolation: Application on the Recycling Paperboard Process

et al. 2020

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“…26 The possibility of substituting long fibers with CNFs was investigated recently in order to improve the breaking length of paper made from softwoods. 7,11 The results of this research showed that, instead of adding 30% Kraft pulp made from pine fibers, it is possible to use 7% CNFs, and still keep the paper breaking length. Other assessments revealed that the drainage rate, brightness, breaking length and density of paper increase if CNFs are added to the pulp, but it has a reverse effect on the paper bulk.…”

Section: Introductionmentioning

confidence: 87%

“…Based on the literature, the most common paper strengthening additives are starch, [1][2][3][4][5][6] polyacrylamides 3 and cellulose nanofibers (CNFs). [7][8][9][10][11][12] Starch is the most common and economical additive that increases paper strength, compared to the other conventional resins. 6 Starch is also a main component in the food industry and this makes a competitive demand and sometimes limited availability or periodic price variability for the use in the paper industry.…”

Section: Introductionmentioning

confidence: 99%

“…Using CNFs as a new additive to reinforce paper has been considered in the recent years. 7,8,11,12,21,22 According to research reports, using CNFs with CPAM retention aid makes stronger paper, and this reinforcement varies when using different CNFs. CNFs have a high aspect ratio and L/D ratio and therefore, it is used in wet and dry sections.…”

Section: Introductionmentioning

confidence: 99%

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Utilization of Cellulose Nanofibers and Cationic Polymers to Improve Breaking Length of Paper

Charani¹,

Moradian²

2019

Cellulose Chem. Technol.

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One of the key properties of paper is its breaking length, which is usually controlled in many paper products. To achieve this, several natural and synthetic polymers are used in paper industries in accordance with paper grades and customer needs. In this study, the combination of cationic starch (CS) and/or polyacrylamide (CPAM) as common additives, and cellulose nanofibers (CNFs), were added to a short-fiber pulp suspension to investigate the reinforcement effects and to compare such properties with those of paper prepared with 20% softwood long-fiber. The breaking length was measured on the prepared handsheets. The results showed that adding 1% CS significantly improves paper breaking length, which was well comparable to the handsheets reinforced with 15% softwood pulp. The results showed that adding less CS (0.5%) along with 3% CNFs significantly increased the paper breaking length, while reducing process difficulties associated with CS. The same result was also achieved adding 3% CNFs along with 0.03% CPAM. Furthermore, a triple system of CNFs, CS, and CPAM additives significantly enhanced the paper breaking length and surpassed the breaking length of paper made with 20% softwood pulp. Using this triple system led to the least changes in handsheet thickness as well. Therefore, this triple system of additives can replace softwood pulp, thereby significantly expanding the spectrum of paper products for the countries with limited softwood pulp sources.

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“…[2] Nowadays, higher value-added applications based on sawdust have also been developed, such as green composites made from recycled plastic, [3] biotemplates for catalytic systems [4] and packaging materials reinforced by sawdust nanofibers. [5] Unlike solely cellulose-based nanofibers (known as nanocelluloses) that are conventionally produced from more expensive bleached pulp, wood nanofibers use mechanical pulp or even wood sawdust as a starting material. This approach provides many advantages, e.g.…”

Section: Introductionmentioning

confidence: 99%

Preparation of flame-retardant lignin-containing wood nanofibers using a high-consistency mechano-chemical pretreatment

Sirviö

Hong

Ämmälä

et al. 2019

Chemical Engineering Journal

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Highlights Mechano-chemical pretreatment was developed to produce anionic wood nanofiber. Deep eutectic solvent worked both as reactive agent and medium for the reaction. The reaction consistency of wood biomass was greatly improved (up to 60 wt%). Anionic wood nanofibers obtained high sulfate group contents (up to 3.1 mmol g -1 ). Multi-functional films can be fabricated from anionic wood nanofibers.ASNFs was obtained with high sulfate group contents (up to 3.1 mmol g -1 ). Besides, the ASNFs possessed a well-individualized structure with a homogeneous size distribution (3-5 nm in width). More importantly, films fabricated from ASNFs achieved strong flame resistance and good mechanical strength. Due to the presence of lignin, ASNF films were able to block over 90% of UV light (at a wavelength of 200-400 nm). The investigated functionalities of ASNFs led the lignocellulosic biomass residuals to be converted to high value-added bioproducts.Therefore, the reactive DES treatment combined with milling and heating process offers a practical and sustainable route for multi-functional biomaterial production, which can be potentially utilized, even at an industrial scale.

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Lignocellulosic micro/nanofibers from wood sawdust applied to recycled fibers for the production of paper bags

Cited by 24 publications

References 20 publications

Horticultural Plant Residues as New Source for Lignocellulose Nanofibers Isolation: Application on the Recycling Paperboard Process

Horticultural Plant Residues as New Source for Lignocellulose Nanofibers Isolation: Application on the Recycling Paperboard Process

Utilization of Cellulose Nanofibers and Cationic Polymers to Improve Breaking Length of Paper

Preparation of flame-retardant lignin-containing wood nanofibers using a high-consistency mechano-chemical pretreatment

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