Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Preparation of Superabsorbent PVA Films with Polycarboxylic Acid Crosslinkers

폴리카르복시산 가교제를 이용한 고흡수성 PVA 필름의 제조

  • Koo, Gwang-Hoe (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology) ;
  • Yoon, Sung-Jong (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology) ;
  • Jang, Jin-Ho (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
  • 구광회 (금오공과대학교 나노바이오텍스타일공학과) ;
  • 윤성종 (금오공과대학교 나노바이오텍스타일공학과) ;
  • 장진호 (금오공과대학교 나노바이오텍스타일공학과)
  • Published : 2009.08.27
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Abstract

PVA films were crosslinked with dimethylol dihydroxy ethylene urea (DMDHEU) and three polycarboxylic acids of butanetetracarboxylic acid (BTCA), citric acid and malic acid Different factors influencing the crosslinking treatment with BTCA were investigated including BTCA and sodium hypophosphite (SHP) concentration, curing temperature and time. The cured films was extracted with boiling water and gel fraction was calculated based on weight change of the PVA films. The gel fraction of PVA films increased with increasing curing temperature and time. And the resistance to water and thermal stability of the crosslinked PVA films improved with the BTCA crosslinking treatment. While crosslinking with citric acid gave the highest gel fraction among the crosslinkers, crosslinking with malic acid showed the highest absorbancy in 0.9% saline solution, which was attributed to lower crosslink density and high number-average molecular weight between crosslinks. The superabsorbent PVA films could be prepared by adjusting the crosslinking condition of PVA with polycarboxilic acids.

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References

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