Nanocellulose reinforcement in paper produced from fiber blending

Pego, Matheus Felipe Freire; Bianchi, Maria Lúcia; Yasumura, Patrícia Kaji

doi:10.1007/s00226-020-01226-w

Cited by 18 publications

(10 citation statements)

References 29 publications

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“…Despite the expectation that cellulose microfibrils should enhance the paper surface, this unexpected decrease in the burst index was attributed to the heterogeneity of the CMF layers. Similarly, Pego et al (2020) observed lower burst index values on specimens coated with a slurry of 10 wt% CNF. In contrast, Kumar et al (2016) employed roll-to-roll coating on 178 g/m 2 kraft paper with 2% CNF/CMC suspensions, reporting a burst strength increase of up to 50%.…”

Section: Mechanical Propertiesmentioning

confidence: 74%

Potential use of nanofibrillated cellulose-loaded cationic starch solutions as coating formulation for recycled fluting papers

Tozluoğlu

2024

BioRes

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Effects of cellulose nanofibers (CNF) and cationic starch (CS) were evaluated as coating components relative to the physical and mechanical properties of fluting papersheets fabricated from recycled corrugated cardboard fibers. Fabricated fluting papers were subjected to size press applications by three different coating blends. Coating suspensions were prepared at various concentrations of CNF (0.5%, 1%, 2%, 3%, and 4%) and 4 wt% CS, and the same amounts of CS/CNF. The paper sheets were fabricated using size press machine as three-time repetitive applications, followed by one-time drying section, and compared to uncoated, CS-coated, and CNF-coated papers. The application of CNF suspensions increased tensile indices up to 11.7%. Moreover, CS/CNF suspensions resulted in a 67.2% increase in tensile index values. The coating of CS/CNF suspensions increased the burst index values by 163% at the CS+1%CNF concentration when compared to the control pulp. Surface application of prepared suspensions reduced the porosity of the samples under all conditions. The highest reduction in the air permeability was observed in the CS+4%CNF-coated samples as 91.5%. It can be concluded that the superficial applications of CNF on the physical and mechanical properties of recycled fluting paper was more effective in the presence of CS.

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Section: Mechanical Propertiesmentioning

confidence: 74%

Potential use of nanofibrillated cellulose-loaded cationic starch solutions as coating formulation for recycled fluting papers

Tozluoğlu

2024

BioRes

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“…NC also acts by blocking the voids in the 3D network, reducing the ease of air-volume passage within, since compacted NC provides longer tracks for air molecules to pass through [ 95 ]. Air-permeability reduction is also related to a decrease in porosity with NC addition [ 96 ].…”

Section: Resultsmentioning

confidence: 99%

Synergies between Fibrillated Nanocellulose and Hot-Pressing of Papers Obtained from High-Yield Pulp

et al. 2023

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To extend the application of cost-effective high-yield pulps in packaging, strength and barrier properties are improved by advanced-strength additives or by hot-pressing. The aim of this study is to assess the synergic effects between the two approaches by using nanocellulose as a bulk additive, and by hot-pressing technology. Due to the synergic effect, dry strength increases by 118% while individual improvements are 31% by nanocellulose and 92% by hot-pressing. This effect is higher for mechanical fibrillated cellulose. After hot-pressing, all papers retain more than 22% of their dry strength. Hot-pressing greatly increases the paper’s ability to withstand compressive forces applied in short periods of time by 84%, with a further 30% increase due to the synergic effect of the fibrillated nanocellulose. Hot-pressing and the fibrillated cellulose greatly decrease air permeability (80% and 68%, respectively) for refining pretreated samples, due to the increased fiber flexibility, which increase up to 90% using the combined effect. The tear index increases with the addition of nanocellulose, but this effect is lost after hot-pressing. In general, fibrillation degree has a small effect which means that low- cost nanocellulose could be used in hot-pressed papers, providing products with a good strength and barrier capacity.

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“…The strength of the paper is closely related to the bond between the bers. NFC can form higher hydrogen bonds and stable van der Waals forces with bers because of its higher speci c surface area, and it can strengthen paper as an additive in the paper industry (Pego et al 2020). When the coated paper achieves superhydrophobicity, the breakage resistance index and tear index increase by 12.94% and 10.17%, respectively.…”

Section: Analysis and Characterization Of Papermentioning

confidence: 99%

Simple preparation of environmentally friendly and durable superhydrophobic antibacterial paper

Tian

Wang

et al. 2022

Cellulose

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As non-biodegradable single-use plastic packaging products have been restricted in recent years, paperbased materials have attracted appreciable attention for their environmental bene ts. However, the hydrophilic nature of paper-based materials limits its application for replacing non-biodegradable plastic.In this study, an environmentally friendly and multifunctional superhydrophobic paper was developed using a simple spraying method, for reducing white pollution concerns caused by non-degradable singleuse plastic packaging products. The results shown that when base paper (BP) with a low spray amount of 1.5 g/m 2 , the coated paper (CP) exhibits excellent superhydrophobicity (water contact angle of 160°), water repellency (Cobb value of 7.5 g/m 2 ), and strong durability to sandpaper abrasion, nger-wipe, bending, folding, and sustained exposure to corrosion media (HCl with a pH of 1, NaOH with a pH of 10, high temperature treatment at 180°C, and UV irradiation). Additionally, not only does the CP surface directly prevented adhesion of S. aureus and E. coli, but also indirectly repelled solid contaminants upon washing with water, thereby demonstrating highly e cient anti-bacterial and anti-fouling property. The durable and multifunctional superhydrophobic paper developed in this study not only provides a novel direction to solve the problem of white pollution but also presents a better research pathway for the potential applications of paper-based materials.

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Nanocellulose reinforcement in paper produced from fiber blending

Cited by 18 publications

References 29 publications

Potential use of nanofibrillated cellulose-loaded cationic starch solutions as coating formulation for recycled fluting papers

Potential use of nanofibrillated cellulose-loaded cationic starch solutions as coating formulation for recycled fluting papers

Synergies between Fibrillated Nanocellulose and Hot-Pressing of Papers Obtained from High-Yield Pulp

Simple preparation of environmentally friendly and durable superhydrophobic antibacterial paper

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