Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Synthesis and Properties of Superabsorbents from Sodium Cellulose Sulfate-g-PAN(III)Properties of Superabsorbents -

PAN 그라프트 공중함 나트륨 황산 셀룰로오스계 고흡수성 수지의 합성과 성질(III)-고흡수성 수지의 여러가지 성질-

  • 송경근 (서울대학교 공과대학 섬유고분자공학과) ;
  • 윤기종 (단국대학교 공과대학 섬유공학과, 서울대학교 공과대학 섬유고분자공학과) ;
  • 고석원
  • Published : 1994.11.01

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Abstract

Various properties of superabsorbents(HCSPAH) from sodium cellulose sulfate were analyzed. Saline absorbency of HCSPAN in multivalent salt solutions was lower than that in monovalent salt solution of same ionic strength. This appears to be due to the formation of completes between the metal ion and the polyion. Phase transitions of HCSPAN gels were caused by changes in the composition of the polar organic solvent/water mixtures. As the dieleciric constants of solvents were increased, gel collapse occurred at higher solvent concentrations. From DSC measurement, the absorbed water was found to exist as both free and bound water. When water content was less than 0.71g-water/g-dry HCSPAH. only bound water existed.

Keywords

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