섬유

interaction of carbamates and their n-methylol derivatives with cotton and sephadex, measured by gel filtration

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 240
the ability of water-soluble solutes to penetrate cotton fibers and interact with surfaces of water-swollen pores of cellulose plays an important part in most wet-finishing processes on cotton. the present work is a detailed study of the elution behavior of a series of n-alkyl carbamates and their n-monomethylol and n,n-dimethylol derivatives from sephadex g-15 and, in selected cases, from cotton cellulose. it is demonstrated that during gel filtration from cotton or sephadex columns, there was, with only one exception, an increase in sorption as the molecular weight of an unsubstituted n-alkyl carbamate was increased by the addition of methylene groups. when a given carbamate was converted to its monomethylol derivative, sorption decreased progressively. the addition of the first formaldehyde molecule produced a more pronounced effect than did the addition of the second. 11 refs
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