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Comparison of the kraft paper crosslinked by polymeric carboxylic acids of large and small molecular sizes: Dry and wet performance

Journal of applied polymer science, 1999-10, Vol.74 (4), p.907-912 [Peer Reviewed Journal]

Copyright © 1999 John Wiley & Sons, Inc. ;2000 INIST-CNRS ;ISSN: 0021-8995 ;EISSN: 1097-4628 ;DOI: 10.1002/(SICI)1097-4628(19991024)74:4<907::AID-APP17>3.0.CO;2-9 ;CODEN: JAPNAB

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  • Title:
    Comparison of the kraft paper crosslinked by polymeric carboxylic acids of large and small molecular sizes: Dry and wet performance
  • Author: Xu, Gordon Guozhong ; Yang, Charles Qi-Xiang
  • Subjects: Applied sciences ; carboxylic acids ; cellulose ; crosslinking ; esterification ; Exact sciences and technology ; folding endurance ; Paper and paperboard manufacturing ; Paper, paperboard, non wovens ; Polymer industry, paints, wood ; polymeric acids ; strength ; wet strength resins ; wood pulp ; Wood. Paper. Non wovens
  • Is Part Of: Journal of applied polymer science, 1999-10, Vol.74 (4), p.907-912
  • Description: Polycarboxylic acids have been used as crosslinking agents for wood pulp cellulose for improving paper wet strength. Our previous research showed that low‐molecular‐weight polymeric carboxylic acids are effective in improving paper wet strength retention and reducing its flexibility. In this research, we compared two polymeric carboxylic acids, that is, poly(maleic acid) (PMA) with Mn of 800 and poly(methyl vinyl ether‐co‐maleic acid) (PMMA) with Mn of 1,130,000 for improving paper wet strength. The kraft paper sheets were treated at a 2% acid level and cured at different temperatures. The dry strength, wet strength, and folding endurance of the treated sheets were measured. We found that PMA and PMMA have comparable effectiveness in improving paper wet strength and wet stiffness. However, the treatment with PMA increases paper brittleness and severely diminishes paper folding endurance, whereas the treatment with PMMA increases both the dry strength and folding endurance by enhancing the paper's toughness. This striking difference in the performance of the treated paper is attributed to the different nature of the crosslinkages formed on the sheets. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 907–912, 1999
  • Publisher: New York: John Wiley & Sons, Inc
  • Language: English
  • Identifier: ISSN: 0021-8995
    EISSN: 1097-4628
    DOI: 10.1002/(SICI)1097-4628(19991024)74:4<907::AID-APP17>3.0.CO;2-9
    CODEN: JAPNAB
  • Source: Alma/SFX Local Collection
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