The Influence of Nano-Fibrillated Cellulose as a Coating Component in Paper Coating

Xu, Yaxi; Kuang, Yudi; Salminen, Pekka; Chen, Gang

doi:10.15376/biores.11.2.4342-4352

Cited by 15 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The suitability of NFC as rheological modifiers in the aqueous coating formulation for paper products has been extensively evaluated, for example, using TO‐NFC as rheological modifiers, calcium carbonate, and kaolin as pigments, carboxylic butadiene–styrene latex as synthetic binders, and polyamine polyurea resin as water‐resistant agents. [ 336 ] The presence of TO‐NFC increased the viscosity at low shear rates, but TO‐NFC had no obvious influence on viscosity at high shear rates due to the superior shear‐thinning behavior of TO‐NFC. The enhanced low shear rate viscosity was advantageous for sagging prevention.…”

Section: Emerging Applications Of Cnms As Rheology Modifiersmentioning

confidence: 99%

Rheological Aspects of Cellulose Nanomaterials: Governing Factors and Emerging Applications

et al. 2021

View full text Add to dashboard Cite

of nanomaterials from green, low-cost, abundant, renewable, and biodegradable natural resources. One such attractive bioresource is cellulose, the most abundant biopolymer on earth, which is widely present in various forms of renewable biomass, such as trees, plants, tunicates, and bacteria.Structurally, cellulose is a linear, high molecular weight polysaccharide with repeating glucose units linked by 1-4 glycosidic bonds. Owing to the presence of hydroxyl groups, those linear chains of glucose units link together through van der Waals forces and intermolecular hydrogen bonding to form elementary fibrils, which are further packed into larger aggregates known as microfibrils. [3] Cellulose fibrils consist of disordered (amorphous) regions and highly ordered (crystalline) regions. In the crystalline regions, cellulose chains are closely packed together in highly ordered fashion (parallel to the direction of fibril length), dictated by the intricate intraand intermolecular hydrogen bonding; whereas in the amorphous regions, cellulose chain stacking is less ordered and not as closely packed. Therefore, the amorphous regions are more vulnerable to both physical disintegration and chemical hydrolysis in comparison with crystalline regions. When cellulose is prepared in nano-scale fibrillar or crystalline forms, it is broadly referred to as cellulose nanomaterials (CNMs).The isolation, characterization, modification, and application of CNMs are currently receiving much attention. Understanding Cellulose nanomaterials (CNMs), mainly including nanofibrillated cellulose (NFC) and cellulose nanocrystals (CNCs), have attained enormous interest due to their sustainability, biodegradability, biocompatibility, nanoscale dimensions, large surface area, facile modification of surface chemistry, as well as unique optical, mechanical, and rheological performance. One of the most fascinating properties of CNMs is their aqueous suspension rheology, i.e., CNMs helping create viscous suspensions with the formation of percolation networks and chemical interactions (e.g., van der Waals forces, hydrogen bonding, electrostatic attraction/repulsion, and hydrophobic attraction). Under continuous shearing, CNMs in an aqueous suspension can align along the flow direction, producing shear-thinning behavior. At rest, CNM suspensions regain some of their initial structure immediately, allowing rapid recovery of rheological properties. These unique flow features enable CNMs to serve as rheological modifiers in a wide range of fluid-based applications. Herein, the dependence of the rheology of CNM suspensions on test protocols, CNM inherent properties, suspension environments, and postprocessing is systematically described. A critical overview of the recent progress on fluid applications of CNMs as rheology modifiers in some emerging industrial sectors is presented as well. Future perspectives in the field are outlined to guide further research and development in using CNMs as the next generation rheological modifiers.

show abstract

Section: Emerging Applications Of Cnms As Rheology Modifiersmentioning

confidence: 99%

Rheological Aspects of Cellulose Nanomaterials: Governing Factors and Emerging Applications

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Treatment of cellulose with the relatively stable free-radical species 2,2,6,6tetramethylpiperidine-1-oxyl radical (TEMPO) in the presence of an oxidizing agent has become a popular route to the production of NFC under reduced energy requirements (Lasseuguette 2008;Lasseuguette et al 2008;Johnson et al 2009;Hirota et al 2010;Besbes et al 2011a,b;Ishii et al 2011;Loranger et al 2012a,b;Mishra et al 2012;Araki 2013;Benhamou et al 2014;Fukuzumi et al 2014;Kekalainen et al 2014aKekalainen et al , 2015Lindström and Aulin 2014;Mohtaschemi et al 2014a,b;Nechyporchuk et al 2014Nechyporchuk et al , 2015Bettaieb et al 2015;Jowkarderis et al 2015;Martoia et al 2015Martoia et al , 2016Rees et al 2015;Pääkkönen et al 2016;Xu et al 2016). In addition to facilitating the fibrillation of the material, TEMPO-mediated oxidation also imparts a negative charge to the surfaces (at pH values near to or above the pKa value of the carboxylic acids) (Hirota et al 2010;Fukuzumi et al 2014;Isogai 2015).…”

Section: Chemical Assistance To Fibrillationmentioning

confidence: 99%

“…In aqueous coating formulations for paper products, NFC appears to provide favorable attributes of water retention and thickening (Dimic-Misic et al 2013a;Gruneberger et al 2014;Zhou et al 2014;Rautkoski et al 2015;Salo et al 2015;Xu et al 2016). Dimic-Misic et al (2013a reported that NFC tends to act as both viscosity enhancer and water-binding agent, whereas conventional thickeners used in coating formulation, such as CMC, appear to serve more as viscosity enhancers.…”

Section: Coating Formulationmentioning

confidence: 99%

Rheology of nanocellulose-rich aqueous suspensions: A Review

Hubbe

Tayeb

Joyce

et al. 2017

BioRes

227

View full text Add to dashboard Cite

The flow characteristics of dilute aqueous suspensions of cellulose nanocrystals (CNC), nanofibrillated cellulose (NFC), and related products in dilute aqueous suspensions could be of great importance for many emerging applications. This review article considers publications dealing with the rheology of nanocellulose aqueous suspensions in the absence of matrix materials. In other words, the focus is on systems in which the cellulosic particles themselves – dependent on their morphology and the interactive forces between them – largely govern the observed rheological effects. Substantial progress in understanding rheological phenomena is evident in the large volume of recent publications dealing with such issues including the effects of flow history, stratification of solid and fluid layers during testing, entanglement of nanocellulose particles, and the variation of inter-particle forces by changing the pH or salt concentrations, among other factors. Better quantification of particle shape and particle-to-particle interactions may provide advances in future understanding. Despite the very complex morphology of highly fibrillated cellulosic nanomaterials, progress is being made in understanding their rheology, which supports their usage in applications such as coating, thickening, and 3D printing.

show abstract

“…Should the resulting combination of measurements be related to an unacceptably low yield, recycling for further fibrillation would be triggered, automating the common decision in a typical batch process. Extractives can be determined gravimetrically after a solid-liquid extraction with organic solvents, while the consistency index, directly proportional to the apparent viscosity, would require a rheometer (Xu et al 2016;Serra-Parareda et al 2021c).…”

Section: On the Input Parametersmentioning

confidence: 99%

Prediction of cellulose micro/nanofiber aspect ratio and yield of nanofibrillation using machine learning techniques

et al. 2022

View full text Add to dashboard Cite

inputs were chosen among these easily controlled or measured variables: Total lignin (wt%), Cellulose (wt%), Hemicellulose (wt%), Extractives (wt%), HPH Energy Consumption (kWh/kg), Cationic Demand (µeq/g), Transmittance at 600 nm and Consistency index (Ostwald-De Waele's k). In both cases, the ANN models trained here provided satisfactory estimates of aspect ratio (MAPE = 4.54% and R 2 = 0.96) and the yield of nanofibrillation (MAPE = 6.74% and R 2 = 0.98), being able to capture the effect of the applied energy along the fibrillation process. RF and LR models resulted in correlation coefficients of 0.93 and 0.95, respectively, for aspect ratio, while for yield of nanofibrillation the correlation coefficients were 0.87 and 0.92.

show abstract

The Influence of Nano-Fibrillated Cellulose as a Coating Component in Paper Coating

Cited by 15 publications

References 12 publications

Rheological Aspects of Cellulose Nanomaterials: Governing Factors and Emerging Applications

Rheological Aspects of Cellulose Nanomaterials: Governing Factors and Emerging Applications

Rheology of nanocellulose-rich aqueous suspensions: A Review

Prediction of cellulose micro/nanofiber aspect ratio and yield of nanofibrillation using machine learning techniques

Contact Info

Product

Resources

About