Application of DSA to improve strength of thermomechanical pulp blended paper
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Cheol Woo Lee
Abstract
A more efficient application of a dry strength agent (DSA) was investigated to improve the strength of thermomechanical pulp (TMP) blended paper. Strength improvement by DSA application was more effective for hardwood bleached kraft pulp (Hw-BKP) than TMP. The degree of strength improvement of DSA further increased with the increasing degree of refining of Hw-BKP. The strength of the paper was decreased by the fines fractionation of TMP, but the strength improvement efficiency of DSA for the fines fractionated TMP increased. In order to increase the strength of TMP mixed paper using DSA, it is expected that DSA should be adsorbed only to Hw-BKP with high strength improvement efficiency, not TMP fines. When the DSA was mixed with Hw-BKP before contact with other stocks, it was confirmed that the effect of improving the strength by the DSA is the best. The strength improving effect increased as TMP fines were removed. Therefore, to improve the strength of the paper containing TMP in Hw-BKP by adding a DSA, it is preferable to selective apply the DSA to Hw-BKP while blending only the fibers of TMP by fractionation.
Funding source: Korea Forest Service
Award Identifier / Grant number: 2019151D10-2023-0301
Funding source: Ministry of Agriculture, Food and Rural Affairs
Award Identifier / Grant number: 315042
Funding statement: This study was carried out through ‘R&D Program for Forest Science Technology (Project No. 2019151D10-2023-0301)’, provided by Korea Forest Service (Korea Forestry Promotion Institute) and ‘Export Promotion Technology Development Program (315042)’, supported by Ministry of Agriculture, Food and Rural Affairs (Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry).
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Conflict of interest: The authors declare no conflicts of interest.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Chemical pulping
- Evaluation of fines separation from unbleached softwood kraft pulp using microperforated hole screens
- Evaluation of pulp and paper making properties of Caesalpinia decapetela
- Novel bulking technologies for cellulose fibres
- Mechanical pulping
- Interpretation of force profiles in mill-scale LC refining
- Effects of plate wear on bar forces and fiber properties in a mill scale LC-refiner
- Paper technology
- Research on the physical properties of calcium sulfate whisker and the effects of its addition on paper and its printing performance
- Preparation and properties of an intelligent adjustable functional paper for organic cultural relics
- Paper chemistry
- Application of DSA to improve strength of thermomechanical pulp blended paper
- Coating
- The influence of pigment modulus on failure resistance of paper barrier coatings
- Effect of filler additions on pilot-scale extrusion coating of paperboard with PLA-based blends
- Packaging
- Influence of paper properties on adhesive strength of starch gluing
- Environmental impact
- Interfering elements on determination of hexavalent chromium in paper materials with UV-vis spectrophotometry
- Nanotechnology
- Enhanced mechanical and gas barrier performance of plasticized cellulose nanofibril films
- Lignin
- The preparations of nanoporous carbon with multi-heteroatoms co-doping from black liquor powders for supercapacitors
- Miscellaneous
- Hybrid films from plant and bacterial nanocellulose: mechanical and barrier properties
- Mass-balance based soft sensor for monitoring ash content at two-ply paperboard manufacturing
- Investigation of the effect of light fastness on the color changes of maps prepared by electrophotographic digital printing
- Bulking of cellulose fibres – a review
- Preparation of O-HACC/HEC-acrylate emulsion and its application in paper protection
- Mineral-filled biopolyester coatings for paperboard packaging materials: barrier, sealability, convertability and biodegradability properties
Articles in the same Issue
- Frontmatter
- Chemical pulping
- Evaluation of fines separation from unbleached softwood kraft pulp using microperforated hole screens
- Evaluation of pulp and paper making properties of Caesalpinia decapetela
- Novel bulking technologies for cellulose fibres
- Mechanical pulping
- Interpretation of force profiles in mill-scale LC refining
- Effects of plate wear on bar forces and fiber properties in a mill scale LC-refiner
- Paper technology
- Research on the physical properties of calcium sulfate whisker and the effects of its addition on paper and its printing performance
- Preparation and properties of an intelligent adjustable functional paper for organic cultural relics
- Paper chemistry
- Application of DSA to improve strength of thermomechanical pulp blended paper
- Coating
- The influence of pigment modulus on failure resistance of paper barrier coatings
- Effect of filler additions on pilot-scale extrusion coating of paperboard with PLA-based blends
- Packaging
- Influence of paper properties on adhesive strength of starch gluing
- Environmental impact
- Interfering elements on determination of hexavalent chromium in paper materials with UV-vis spectrophotometry
- Nanotechnology
- Enhanced mechanical and gas barrier performance of plasticized cellulose nanofibril films
- Lignin
- The preparations of nanoporous carbon with multi-heteroatoms co-doping from black liquor powders for supercapacitors
- Miscellaneous
- Hybrid films from plant and bacterial nanocellulose: mechanical and barrier properties
- Mass-balance based soft sensor for monitoring ash content at two-ply paperboard manufacturing
- Investigation of the effect of light fastness on the color changes of maps prepared by electrophotographic digital printing
- Bulking of cellulose fibres – a review
- Preparation of O-HACC/HEC-acrylate emulsion and its application in paper protection
- Mineral-filled biopolyester coatings for paperboard packaging materials: barrier, sealability, convertability and biodegradability properties
