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Baysal G. Sustainable polylactic acid spunlace nonwoven fabrics with lignin/zinc oxide/water-based polyurethane composite coatings. Int J Biol Macromol 2024; 254:127678. [PMID: 38287583 DOI: 10.1016/j.ijbiomac.2023.127678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/21/2023] [Accepted: 10/24/2023] [Indexed: 01/31/2024]
Abstract
In this paper, polylactic acid spunlace nonwoven fabrics were coated with lignin/zinc oxide/water-based polyurethane composite formulations, including five different ratios of lignin and zinc oxide, via a film applicator and thermally cured. The coated and thermally cured nonwoven fabrics were tested in terms of color values, tensile strength, abrasion resistance, ultraviolet protection, hydrophobicity, antibacterial activity, air, and vapor permeability properties. Characterization studies were conducted by FTIR, DSC, TGA, XRD, and SEM. The ultraviolet protection factor of 215.47 and a water contact angle of 90.27° were obtained with the fabric coated with WPU-1:5 formulation. Nonwoven fabric coated with the WPU-1:5 formulation showed evident antibacterial activity against S. aureus and E. coli bacteria as 89 % and 100 %, respectively. With the addition of lignin/ZnO into water-based polyurethane coating paste, PLA nonwoven fabric exhibited improved antibacterial activity, tensile strength, abrasion resistance, and ultraviolet light protection performance. However, composite coatings decreased air and vapor permeability and hydrophobicity of fabrics, but acceptable results were obtained. The results indicate that polylactic acid nonwoven fabrics, when treated with lignin/ZnO/WPU composite coatings, exhibit enhanced mechanical and functional properties, rendering them promising for applications in protective medical textiles.
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Affiliation(s)
- Gülçin Baysal
- Eskişehir Technical University Rectorate, 26555 Eskişehir, Turkey.
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Huang S, Wang X, Zhang Y, Meng Y, Hua F, Xia X. Water and oil-grease barrier properties of PVA/CNF/MBP/AKD composite coating on paper. Sci Rep 2023; 13:12292. [PMID: 37516731 PMCID: PMC10387061 DOI: 10.1038/s41598-023-38941-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/17/2023] [Indexed: 07/31/2023] Open
Abstract
In this paper, three kinds of micro-nano bamboo powder (MBP) and alkyl ketene dimer (AKD) were added to the polyvinyl alcohol/cellulose nanofiber (PVA/CNF) coating to prepare PVA/CNF/MBP coated paper and PVA/CNF/M-MBP/AKD coated paper. The results showed that MBP improved the oleophobicity of PVA/CNF coating, and the grease resistance grade of PVA/CNF/B-MBP and PVA/CNF/M-MBP coated papers reached the highest level, with a kit number of 12. Among the PVA/CNF/MBP coated papers, the PVA/CNF/M-MBP coated paper has the best hydrophobic properties, with the water contact angle and Cobb value of 74° and 21.3 g/m2, respectively. In addition, when the AKD dosage was 0.2% in the PVA/CNF/M-MBP/AKD coating, the kit number of the coated paper was 11, the Cobb value was 15.2 g/m2, the water contact angle was 103°, and the tensile strength was found to increase slightly. Therefore, compared with PVA/CNF coated paper, PVA/CNF/M-MBP/AKD coated paper has good strength and excellent hydrophobic and oleophobic properties.
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Affiliation(s)
- Shancong Huang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China
| | - Xiyun Wang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China
| | - Yu Zhang
- Zhejiang Jinchang Specialty Paper Co., Ltd., Quzhou, 324404, Zhejiang, China
| | - Yu Meng
- Zhejiang Jinchang Specialty Paper Co., Ltd., Quzhou, 324404, Zhejiang, China
| | - Feiguo Hua
- Zhejiang Jinchang Specialty Paper Co., Ltd., Quzhou, 324404, Zhejiang, China
| | - Xinxing Xia
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China.
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Lavrič G, Zamljen A, Juhant Grkman J, Jasiukaitytė-Grojzdek E, Grilc M, Likozar B, Gregor-Svetec D, Vrabič-Brodnjak U. Organosolv Lignin Barrier Paper Coatings from Waste Biomass Resources. Polymers (Basel) 2021; 13:4443. [PMID: 34960994 PMCID: PMC8703786 DOI: 10.3390/polym13244443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of the study was to isolate lignin from organosolv, beech tree (Fagus sylvatica), and Japanese knotweed (Reynoutria japonica), to use it for paper surface and to replace part of the non-renewable product resources with bio-based ones. A total of nine coated samples with different lignin formulations and starch were compounded, prepared, and evaluated. The basic (grammage, thickness, specific density), mechanical (elongation at break, tensile, burst and tear indices), and barrier properties (contact angle, water penetration, water vapour permeability, kit test) of the coated papers were investigated. The analysis showed no significant difference in tensile properties between uncoated and coated samples. Furthermore, the decrease in water vapour transmission rate and the lower contact angle for coated samples were nevertheless confirmed. The novel coating materials show promising products with very good barrier properties. Finally, the correlation between structural, morphological, and (other) natural lignin-based factors was revealed, highlighting the importance of parameters such as the equivalence ratio of aliphatic and phenolic hydroxyl groups or the average molecular weight. Tuning functionality by design could optimise performance in the future.
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Affiliation(s)
- Gregor Lavrič
- Pulp and Paper Institute, Bogišićeva 8, 1000 Ljubljana, Slovenia; (G.L.); (J.J.G.)
| | - Aleksandra Zamljen
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia; (A.Z.); (E.J.-G.); (M.G.); (B.L.)
| | - Janja Juhant Grkman
- Pulp and Paper Institute, Bogišićeva 8, 1000 Ljubljana, Slovenia; (G.L.); (J.J.G.)
| | - Edita Jasiukaitytė-Grojzdek
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia; (A.Z.); (E.J.-G.); (M.G.); (B.L.)
| | - Miha Grilc
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia; (A.Z.); (E.J.-G.); (M.G.); (B.L.)
| | - Blaž Likozar
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia; (A.Z.); (E.J.-G.); (M.G.); (B.L.)
| | - Diana Gregor-Svetec
- Faculty of Natural Sciences and Engineering, University of Ljubljana, Snežniška 5, 1000 Ljubljana, Slovenia;
| | - Urška Vrabič-Brodnjak
- Faculty of Natural Sciences and Engineering, University of Ljubljana, Snežniška 5, 1000 Ljubljana, Slovenia;
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Wang W, Gu F, Deng Z, Zhu Y, Zhu J, Guo T, Song J, Xiao H. Multilayer surface construction for enhancing barrier properties of cellulose-based packaging. Carbohydr Polym 2021; 255:117431. [DOI: 10.1016/j.carbpol.2020.117431] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/27/2022]
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Application of Polyvinyl Acetate/Lignin Copolymer as Bio-Based Coating Material and Its Effects on Paper Properties. COATINGS 2021. [DOI: 10.3390/coatings11020192] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, lignin-vinyl acetate copolymers containing different fractions of lignin were synthesized by the copolymerization technique. The synthesized copolymer was successfully applied to coat the paper for enhancing its properties and performance. The effects of the lignin-vinyl acetate copolymer on the physicochemical, air permeability and mechanical properties of paper were investigated. The mechanical strength, hydrophilic, and air permeability properties of coated paper were improved with the increasing content of the lignin. Lignin-vinyl acetate copolymer containing 15% lignin coated paper exhibited a 1.86 times increase in the tensile index, 45 times increase in the water contact angle, and a 41.1% reduction in the air permeability compared with uncoated paper. Scanning electron microscopy was applied to study the morphology of the coated and uncoated paper. The results showed that paper surface porosity structure was decreased, while the surface smoothness was enhanced considerably with increasing lignin fraction in the copolymer. Therefore, the successful fabrication of such an enchanting coated paper may afford new potential and great applications in the packaging paper.
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Kwon G, Lee K, Kim D, Jeon Y, Kim UJ, You J. Cellulose nanocrystal-coated TEMPO-oxidized cellulose nanofiber films for high performance all-cellulose nanocomposites. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:123100. [PMID: 32768841 DOI: 10.1016/j.jhazmat.2020.123100] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
High performance biopolymer films are of great interest as effective alternatives to non-biodegradable and petroleum-based polymer films. However, most natural biopolymer films possess weak mechanical and poor gas barrier properties, limiting their applicability. In this work, we developed all-cellulose nanocomposite films through a simple vacuum filtration process, using cellulose nanocrystals (CNCs) and 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers (TEMPO-CNFs). The TEMPO-CNFs were employed to construct a transparent, free-standing substrate matrix and the CNCs were used as a coating material to improve the mechanical and water vapor barrier properties of the final material. We have demonstrated that the top and bottom CNCs-coated TEMPO-CNF substrates (CNC/TEMPO-CNF/CNC) have excellent mechanical and good water vapor barrier properties. The resulting CNC/TEMPO-CNF/CNC films revealed a high tensile strength of 114 MPa and a low specific water vapor transmission rate (SWVTR) of 19 g∙mm/m2∙day. In addition, the CNC/TEMPO-CNF/CNC films were resistant to various solvents including water, ethanol, tetrahydrofuran (THF), and acetone. This type of high performance cellulose nanocomposite can be used as a renewable material for a broad range of potential applications.
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Affiliation(s)
- Goomin Kwon
- Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
| | - Kangyun Lee
- Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
| | - Dabum Kim
- Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
| | - Youngho Jeon
- Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
| | - Ung-Jin Kim
- Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
| | - Jungmok You
- Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea.
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