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Study on manufacturing hot water-resistant PVOH coated paper by gas grafting palmitoyl chloride (II)–Control of palmitoyl chloride penetration by inorganic pigments coating

  • Kwang-Seob Lee , Ji-Seon Choi , Kyoung-Hwa Choi EMAIL logo and Jeong-Yong Ryu EMAIL logo
Published/Copyright: January 10, 2023
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Nordic Pulp & Paper Research Journal
From the journal Nordic Pulp & Paper Research Journal Volume 38 Issue 2

Abstract

In this experiment, we explored how to control the penetration of palmitoyl chloride in the gas grafting of PVOH-coated paper. When calcium carbonate was pre-coated, the gas grafting reaction of the PVOH-coated paper tended to be inhibited. It is believed that palmitoyl chloride is additionally consumed by moisture generated when calcium carbonate neutralizes hydrochloric acid gas, a by-product of the graft reaction, thereby inhibiting the graft reaction and reducing the hydrophobization efficiency by generating unreacted residual free fatty acids. Unlike calcium carbonate, the clay coating layer blocks the penetration of vaporized palmitoyl chloride and improves the gas grafting density of PVOH without moisture generation. The PVOH coating layer, where vaporized palmitoyl chloride penetrates, is thinly processed to avoid unnecessary graft reactions in the thickness direction, and the propagation of palmitoyl chloride in the gas phase is blocked by the clay-coating layer. In previous studies, an excess of 1400 mg/m2 of palmitoyl chloride was required to secure strong hydrophobicity of less than 10 g/m2 of Cobb hot water absorption. However, by pre-coating the clay, only 650 mg/m2 of palmitoyl chloride, which was about a 53% reduction compared to previous studies, was sufficient to perform a strong hydrophobic treatment.

Keywords: fatty acid chloride; gas grafting treatment; inorganic pigment; penetration; PVOH
Corresponding authors: Kyoung-Hwa Choi, Changgang Institute of Paper Science and Technology, Kangwon National University, 1 Kangwondaehak-gil, Chunchon-si, Gangwon-do, 24341, Republic of Korea, E-mail: ; and Jeong Yong Ryu, Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, 1 Kangwondaehak-gil, Chunchon-si, Gangwon-do, 24341, Republic of Korea, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was supported by the Technology Innovation Programs (No.20013217 and No.20010431) of Korea Evaluation Institute of Industrial Technology (KEIT) funded by the Ministry of trade, Industry & Energy (MOTIE, Korea).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-09-07
Accepted: 2022-12-15
Published Online: 2023-01-10
Published in Print: 2023-06-27

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Biorefining
  3. Possible alternatives for using kraft lignin as activated carbon in pulp mills – a review
  4. Technical kraft lignin from coffee parchment
  5. Nitric acid-potassium hydroxide fractionation of rice straw: an integrated biorefinery initiative
  6. Paper technology
  7. The influence of fibrous suspension flow regimes on the formation of tissue paper manufactured from different furnish compositions
  8. Paper physics
  9. Assessment of paperboard large deformation at fold using digital image correlation technique
  10. Paper chemistry
  11. Response surface methodology optimization and antimicrobial activity of berberine modified trimethoprim carboxymethyl cellulose
  12. Packaging
  13. Addition of bentonite to cationic starch matrix for coating on kraftliner paper to improve grease resistance
  14. Recycling
  15. Changes in water-vapor-adsorption isotherms of pulp fibers and sheets during paper recycling, including drying of wet webs, and disintegration and sonication of dried sheets in water
  16. Determination of fines in recycled paper
  17. Disintegration of toilet papers used in shopping malls
  18. Nanotechnology
  19. Cryoslash as an effective pre-treatment to obtain nanofibrillated cellulose using ultra-fine friction grinder with kraft pulp
  20. Pre-treatment with calcium hydroxide and accelerated carbonation for cellulosic pulp fibrillation
  21. Chemical technology/modifications
  22. Study on manufacturing hot water-resistant PVOH coated paper by gas grafting palmitoyl chloride (II)–Control of palmitoyl chloride penetration by inorganic pigments coating
  23. Lignin
  24. Efficient and eco-friendly isolation and purification of lignin from black liquor with choline chloride-based deep eutectic solvents
  25. Misc
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https://doi.org/10.1515/npprj-2022-0069
Keywords for this article
fatty acid chloride; gas grafting treatment; inorganic pigment; penetration; PVOH

Articles in the same Issue

  1. Frontmatter
  2. Biorefining
  3. Possible alternatives for using kraft lignin as activated carbon in pulp mills – a review
  4. Technical kraft lignin from coffee parchment
  5. Nitric acid-potassium hydroxide fractionation of rice straw: an integrated biorefinery initiative
  6. Paper technology
  7. The influence of fibrous suspension flow regimes on the formation of tissue paper manufactured from different furnish compositions
  8. Paper physics
  9. Assessment of paperboard large deformation at fold using digital image correlation technique
  10. Paper chemistry
  11. Response surface methodology optimization and antimicrobial activity of berberine modified trimethoprim carboxymethyl cellulose
  12. Packaging
  13. Addition of bentonite to cationic starch matrix for coating on kraftliner paper to improve grease resistance
  14. Recycling
  15. Changes in water-vapor-adsorption isotherms of pulp fibers and sheets during paper recycling, including drying of wet webs, and disintegration and sonication of dried sheets in water
  16. Determination of fines in recycled paper
  17. Disintegration of toilet papers used in shopping malls
  18. Nanotechnology
  19. Cryoslash as an effective pre-treatment to obtain nanofibrillated cellulose using ultra-fine friction grinder with kraft pulp
  20. Pre-treatment with calcium hydroxide and accelerated carbonation for cellulosic pulp fibrillation
  21. Chemical technology/modifications
  22. Study on manufacturing hot water-resistant PVOH coated paper by gas grafting palmitoyl chloride (II)–Control of palmitoyl chloride penetration by inorganic pigments coating
  23. Lignin
  24. Efficient and eco-friendly isolation and purification of lignin from black liquor with choline chloride-based deep eutectic solvents
  25. Misc
  26. Flocculation of alkyl ketene dimer and calcium carbonate on paper sizing and filling performance
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