Water and oil-grease barrier properties of PVA/CNF/MBP/AKD composite coating on paper

Huang, Shancong; Xi-yun, Wang; Meng, Yonggang; Hua, Feiguo; Xin-xing, Xia

doi:10.1038/s41598-023-38941-w

Cited by 5 publications

(4 citation statements)

References 44 publications

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“…However, the resulting film is brittle in a dry state, resulting in a slight decrease in the tear strength. On the other hand, the hydrophobic groups of AKD exist on the fibres' surfaces, forming a thin film that blocks direct contact between the fibres and the water [69]. In this experiment, it was found that the film formed by the AKD coating's wet state has a certain degree of toughness.…”

Section: Mechanical Properties Of the Akd-coated Paper Mulchmentioning

confidence: 84%

“…At the same time, the wet mechanical strength is significantly enhanced. This is because the AKD molecules contain hydrophobic and reactive groups, which react with the carbonyl groups of fibres to form covalent bonds [66][67][68], creating a stable film on the fibres' surfaces [69]. It further binds the fibres on the surface of the paper mulch, enhancing the comprehensive force among the fibres and increasing the tensile strength.…”

Section: Mechanical Properties Of the Akd-coated Paper Mulchmentioning

confidence: 99%

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Green Development of Natural Fibre-Based Paper Mulch from Recyclable Cow Dung and Flax Straw Waste

Cao,

Li,

Zhang

et al. 2024

Agronomy

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Livestock dung, discarded crop straws, and residual plastic film are the primary agricultural non-point sources of pollution. For livestock dung and discarded crop straw, the general treatment focuses on compost, animal fodder, industrial raw material, and new energy. The development of degradable mulch film is the main way to solve pollution from residual plastic film. However, an effective way to solve the above three types of pollution simultaneously and use them for ecological circular agriculture has been less studied. In this study, using cow dung and flax straw wastes as raw materials, we prepared natural, fibre-based paper mulch using the rapid-Kothen method and analysed the film-forming mechanism. Based on the Van Soest method, the cow dung and flax straw waste contain abundant cellulose fibres: 36.75% and 54.69%, respectively. The tensile strength and tear strength of fibre paper mulch are 1.87 kN/m and 19.91 N/mm, respectively. To enhance the adaptability of the fibre paper mulch in humid environments, the surface of the mulch was treated with alkyl ketene dimer (AKD). The AKD-coated fibre paper mulch displays hydrophobic properties, indicated by a contact angle of 128° ± 2°. It has a wet tensile strength of 0.64 kN/m and a wet tear strength of 8.23 N/mm. Additionally, it exhibits a dry tensile strength and a tear strength of 2.13 kN/m and 16.43 N/mm, respectively. Notably, the dry tensile strength is increased by 16.31%. In this way, the livestock dung and discarded crop straw can be reused, reducing dung pollution and straw burning in livestock farms, and the final products can alleviate the residual film pollution simultaneously.

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Section: Mechanical Properties Of the Akd-coated Paper Mulchmentioning

confidence: 84%

Section: Mechanical Properties Of the Akd-coated Paper Mulchmentioning

confidence: 99%

Green Development of Natural Fibre-Based Paper Mulch from Recyclable Cow Dung and Flax Straw Waste

Cao,

Li,

Zhang

et al. 2024

Agronomy

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“…It can be applied by a variety of methods, including gravure roller (forward, reverse and offset, flex), return roller, air knife or Mayer bar. Polyvinyl alcohol (PVA) is a suitable coating carrier with good film-forming and biodegradable properties [29]. Additionally, one of the most important factors affecting the barrier properties of coated paper is the coating grammage.…”

Section: Discussionmentioning

confidence: 99%

Paper Coatings Based on Polyvinyl Alcohol and Cellulose Nanocrystals Using Various Coating Techniques and Determination of Their Barrier Properties

Tarnowiecka-Kuca,

Peeters,

Bamps

et al. 2023

Coatings

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The goal of this work was to improve the barrier properties of selected papers against water, grease and oil or gases (water vapor and oxygen) by covering them with biodegradable commercial coating carriers based on cellulose nanocrystals (CNCs) and polyvinyl alcohol (PVOH). The aim was also to obtain cellulose recyclable packaging materials with improved barrier characteristics. The properties of paper coatings based on CNCs and PVOH were characterized. Various paper coating techniques (flexographic printing, rotogravure printing and blade printing) were evaluated with respect to the final properties of the surface-modified paper with different starting grammages (40 g/m2, 70 g/m2, 100 g/m2). Functional properties, such as the barrier against oxygen, water vapor, water and grease; mechanical properties; and seal characterization of coated paper were examined. The results of this study demonstrated that the covering of the paper may improve the water, grease and oil barrier and that the best results were obtained for Gerstar 70 g/m2 coated with J12 coatings using the flexographic technique.

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“…Water absorption of paper was determined using Cobb Absorption Tester according to GB/T 1540 standard. 48 The WCA was measured using a Kruss DSA10 optical contact angle system. A drop of DI Water (roughly 5 μL) through a rotary knob was manually dispensed on the surface of a sample to acquire the WCA at five different sites on each one.…”

Section: Characterizationmentioning

confidence: 99%

Castor oil‐based paper packaging coating with water resistance and degradability obtained by thiol‐ene click reaction

Chen,

Li,

Guan

et al. 2024

J of Applied Polymer Sci

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With the implementation of plastic restrictions and the increasingly serious problem of environmental pollution, paper with green and recyclable characteristics is gradually becoming a substitute for packaging materials. However, the rich cellulose structure in the paper, which contains hydroxyl groups leading to its hydrophilicity, allows water molecules to penetrate the paper and disrupt the hydrogen bonds between cellulose, resulting in a decrease in mechanical properties. Therefore, waterproof coatings are crucial for paper‐based materials to be used in many applications. Based on this, the paper surface was chemically modified with castor oil‐based resin (CO‐590) monomer prepared by coupling agent and castor oil (CO). The results indicated that the modified paper with the contact angle (CA) of 114° had excellent waterproof performance and had a reduction by 40.3% in water vapor transmission rate (WVTR), but also its mechanical increased to 26.9 MPa and the decomposition temperature to 410.5°C. In addition, the coating on its surface could be removed in an alkaline solution and had a possibility to recycle blank paper in the future for manufacturing sustainable production. This work not only provides a method for preparing modified packaging paper, but also expands the application fields of materials.

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Water and oil-grease barrier properties of PVA/CNF/MBP/AKD composite coating on paper

Cited by 5 publications

References 44 publications

Green Development of Natural Fibre-Based Paper Mulch from Recyclable Cow Dung and Flax Straw Waste

Green Development of Natural Fibre-Based Paper Mulch from Recyclable Cow Dung and Flax Straw Waste

Paper Coatings Based on Polyvinyl Alcohol and Cellulose Nanocrystals Using Various Coating Techniques and Determination of Their Barrier Properties

Castor oil‐based paper packaging coating with water resistance and degradability obtained by thiol‐ene click reaction

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