Mechanical properties of UV-waterborne varnishes reinforced by cellulose nanocrystals

Vardanyan, V. R.; Poaty, Bouddah; Chauve, Grégory; Landry, Véronic; Galstian, Tigran; Riedl, Bernard

doi:10.1007/s11998-014-9598-3

Cited by 54 publications

(28 citation statements)

References 27 publications

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“…With regard to wood coatings, a number of studies have been published. CNC were reported to improve resistance against scratching and abrasion of acrylic latex, UV-curing waterborne varnish and high-solids coating (Kaboorani et al 2016;Landry and Blanchet 2011;Poaty et al 2014;Vardanyan et al 2014Vardanyan et al , 2015Veigel et al 2014). In addition to improvements in coating mechanics, also optical effects may be imparted by CNC addition to coatings (Vlad-Cristea et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Nanocellulosic fillers for waterborne wood coatings: reinforcement effect on free-standing coating films

et al. 2017

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Coatings fulfill an important function in providing functionality and service life to wood surfaces. In the present study, the potential of nanocellulosic fillers toward improving waterborne wood coating mechanics is evaluated using free-standing coating films. At 2% filler content, significant improvements in static and dynamic mechanical properties were observed. The extent of these improvements was different depending on whether high-aspect-ratio cellulose nanofibrils of short cellulose nanocrystals were used. Chemical surface modification of cellulose nanofibrils did not provide further improvement. The water-vapor sorption properties of the coating films, which were also evaluated, did not show significant effects due to addition of nanocellulose, while optical transparency slightly decreased.

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Section: Introductionmentioning

confidence: 99%

Nanocellulosic fillers for waterborne wood coatings: reinforcement effect on free-standing coating films

et al. 2017

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“…successfully used modified CNC at low concentration in waterborne polyurethane with improved abrasion resistance and mechanical properties of the PU/CNC nanocomposite films. Later, Vardanyan et al . described similar study of using both pure CNC and chemically modified CNC in UV‐waterborne polyurethane‐acrylate varnishes applied to wood coatings.…”

Section: Introductionmentioning

confidence: 99%

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Virtanen

Jämsä

Talja

et al. 2017

J of Applied Polymer Sci

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The increasing demand for the use of sustainable materials in industrial applications has created an urge to develop technologies that enable the use of biopolymers such as cellulose for the improvement of properties of commercial products. In this study, the potential of the silyl functionalized cellulose nanofibrils (CNF) as a reinforcing additive for the water‐ and solvent‐based two‐component polyurethane (PU) lacquer coatings was evaluated. The addition of the silylated CNF improved the abrasion resistance, strength, and elasticity of the PU coatings. When using the silylated CNF as an additive, the adhesion of the PU coatings was retained. The oxygen permeation rate of the silylated CNF films was strongly influenced by the nature of the solvent. The silylated CNF showed potential as a reinforcing additive even at low loadings in the two‐component PU lacquers. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44801.

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“…The higher GM loading yielded a harder coating (6H) than the control one (5H). This test revealed no significant difference of hardness between coatings with different GM additions, which was because GM was simply dispersed but not covalently bonded to or within the continuous phase, resulting in no increase of hardness [58]. Coatings 2019, 9, x FOR PEER REVIEW 7 of 12…”

Section: Adhesion and Hardnessmentioning

confidence: 99%

Mechanical and Thermal Properties of Waterborne Polyurethane Coating Modified through One-Step Cellulose Nanocrystals/Graphene Materials Sols Method

Yang

Zhang³

et al. 2020

Coatings

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Developing multifunctional coatings with excellent mechanical and thermal properties is highly desirable for wood-based composite application. The recent development of waterborne coatings for wood products suggests that a promising thermosetting material needs to also have properties like low volatile organic contents (VOCs), hardness, and fast curing. The cellulose nanocrystals/graphene materials (CNC/GM) sols were prepared through the one-step method as the thermally conductive and reinforced modifier for preparing waterborne polyurethane (WPU) coatings. The influence of this modifier on the thermal and mechanical properties such as thermal conductivity, abrasion resistance, and adhesion of WPU coatings was investigated. The results indicated that adding CNC/GM sols increased the hardness, abrasion resistance, and thermal conductivity of the WPU coatings, and meanwhile maintained the coating adhesion at the highest grade (level 1). The highest abrasion resistance value of 0.023 g/100 r was obtained for the modified WPU coating when the addition of GM was 3%.

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Mechanical properties of UV-waterborne varnishes reinforced by cellulose nanocrystals

Cited by 54 publications

References 27 publications

Nanocellulosic fillers for waterborne wood coatings: reinforcement effect on free-standing coating films

Nanocellulosic fillers for waterborne wood coatings: reinforcement effect on free-standing coating films

Chemically modified cellulose nanofibril as an additive for two‐component polyurethane coatings

Mechanical and Thermal Properties of Waterborne Polyurethane Coating Modified through One-Step Cellulose Nanocrystals/Graphene Materials Sols Method

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