Acrylate/Nanofibrillated Cellulose Nanocomposites and Their Use for Paper Coating

Hassan, Mohammad L.; Fadel, Shaimaa M.; Hassan, Enas A.

doi:10.1155/2018/4953834

Cited by 12 publications

(7 citation statements)

References 24 publications

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“…The large aspect ratio of CNFs makes them more tightly entangled, which can better enhance the mechanical properties of the coating layer. Moreover, the density of the CNF fiber network can be further improved through esterification crosslinking (acrylates), thus greatly increasing the mechanical properties of the coating layer [22,23]. In paper coating, the hydroxyl group of CNF can be closely bonded with the paper surface fiber through hydrogen bond [24], and CNF can also intertwine with the paper fibers to further improve the mechanical properties of the coated paper [15].…”

Section: Mechanical Reinforcement Coatingmentioning

confidence: 99%

The Application of Polysaccharides and Their Derivatives in Pigment, Barrier, and Functional Paper Coatings

Wang

Jin

et al. 2020

Polymers

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As one of the most abundant natural polymers in nature, polysaccharides have the potential to replace petroleum-based polymers that are difficult to degrade in paper coatings. Polysaccharide molecules have a large number of hydroxyl groups that can bind strongly with paper fibers through hydrogen bonds. Chemical modification can also effectively improve the mechanical, barrier, and hydrophobic properties of polysaccharide-based coating layers and thus can further improve the related properties of coated paper. Polysaccharides can also give paper additional functional properties by dispersing and adhering functional fillers, e.g., conductive particles, catalytic particles or antimicrobial chemicals, onto paper surface. Based on these, this paper reviews the application of natural polysaccharides, such as cellulose, hemicellulose, starch, chitosan, and sodium alginate, and their derivatives in paper coatings. This paper analyzes the improvements and influences of chemical structures and properties of polysaccharides on the mechanical, barrier, and hydrophobic properties of coated paper. This paper also summarizes the researches where polysaccharides are used as the adhesives to adhere inorganic or functional fillers onto paper surface to endow paper with great surface properties or special functions such as conductivity, catalytic, antibiotic, and fluorescence.

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Section: Mechanical Reinforcement Coatingmentioning

confidence: 99%

The Application of Polysaccharides and Their Derivatives in Pigment, Barrier, and Functional Paper Coatings

Wang

Jin

et al. 2020

Polymers

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“…CNC formulations display higher values than the ones reported in the literature [ 36 , 73 , 74 ], and this is probably due to the CNC gel addition to the pure coating instead of the direct addition of the CNC into the coatings; the gel was made in order to favor the CNC dispersion. CNCs are considered as mechanical resistance enhancers [ 73 , 77 ], and they are hydrophilic when applied by themselves [ 78 ]; therefore, the given hydrophobicity could be due to the established crosslinks between the matrix and the additive [ 79 ]. In fact, cellulose hydroxyl groups could have formed covalent bonds with acrylate groups of the coating [ 54 , 79 , 80 , 81 ], limiting the availability of the functional groups, which usually interact with water (hydroxyls).…”

Section: Resultsmentioning

confidence: 99%

“…CNC is usually added to coating for its mechanical property’s improvement. Creating a network with the matrix makes the resulting coating more flexible and, in the same moment, strong [ 78 ]. This crosslink between coating matrix, biocides and CNC limited the entrance of hyphae as well as water (see Section 3.5 ).…”

Section: Resultsmentioning

confidence: 99%

Cellulose Nano Crystals (CNC) as Additive for a Bio-Based Waterborne Acrylic Wood Coating: Decay, Artificial Weathering, Physical and Chemical Tests

et al. 2023

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Wood coatings prolong the service life of wood-based products, but they are usually of synthetic origin. The aim of the present article is to reduce the fossil-based compounds in a commercial waterborne acrylic coating by CNC addition and to test its performance. The coatings were applied on European beech and Norway spruce wood in order to test durability against Gloeophyllum trabeum (brown wood rot) and Trametes versicolor (white wood rot). Artificial weathering and blue stain, contact angle, physical tests (adhesion, impact and scratch test), chemical (FTIR) and morpho-anatomical analysis (SEM) were carried out. CNC addition increased viscosity, limiting the spreading of the coating into wood pores as visible after SEM observation, which reduced coating adhesion on the substrate. CNC improved fungal resistance as seen by a reduced mass loss and FTIR spectroscopy thanks to crosslinks formation, which reduced water sorption as well. Color change was not significant, and, on the other hand, glossiness was reduced but resulted as more homogeneous than control. CNC addition gave good results also in blue stain protection. CNC improved scratch resistance, but no visible change to impact was registered. CNC has promising results in coatings depending on wood and fungal species and presence of further commercial additives (biocides).

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“…The influence of CFEO-Ms addition on the mechanical properties of coated paper was investigated in terms of the folding strength and tensile strength. Folding strength is the capability that paper resists repeated folding, while tensile strength is the tension that paper can withstand [57,58]. Considering the anisotropy of paper, two measurement directions (machine direction and cross-machine direction) were used.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Coatings 2022, 12, x FOR PEER REVIEW 14 of 20 paper can withstand [57,58]. Considering the anisotropy of paper, two measurement directions (machine direction and cross-machine direction) were used.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries

et al. 2022

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Essential oils are natural antibacterial substances and have potential value for application in fruit and vegetable packaging. In this study, Chinese fir essential oil (CFEO) was microencapsulated to prepare food packaging materials for the first time to overcome its volatilization and oxidation shortcomings and to obtain a sustained-release form of the oil. CFEO was effectively encapsulated in gelatin and chitosan using the complex coacervation method, and the encapsulation efficiency, microstructure, infrared spectrum and thermal stability of the microcapsules were evaluated. Experiments confirmed that the microcapsules had some antibacterial activity. A bioactive paper was developed by combining CFEO microcapsules (CFEO-Ms) with paper-based material using the film-forming property of polyvinyl alcohol (PVA). The coated paper showed good mechanical, air permeability and moisture permeability properties. Environmental scanning electron microscopy confirmed that CFEO-Ms bonded well with PVA and was successfully introduced into the paper fiber after coating, forming an obvious coating film on the surface to facilitate the continuous release of CFEO. The shelf life of strawberries was significantly prolonged when the PVA-coated paper mixed with 3% CFEO-Ms was used for packaging. The results demonstrated that the CFEO-Ms coated paper has the potential to become an effective packaging material for the preservation of strawberries.

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Acrylate/Nanofibrillated Cellulose Nanocomposites and Their Use for Paper Coating

Cited by 12 publications

References 24 publications

The Application of Polysaccharides and Their Derivatives in Pigment, Barrier, and Functional Paper Coatings

The Application of Polysaccharides and Their Derivatives in Pigment, Barrier, and Functional Paper Coatings

Cellulose Nano Crystals (CNC) as Additive for a Bio-Based Waterborne Acrylic Wood Coating: Decay, Artificial Weathering, Physical and Chemical Tests

Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries

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