섬유

kinetics of swelling of cotton fibers in aqueous ethylenediamine solutions using x-ray diffraction data

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 219
apparently, the swelling reaction proceeds at three different rates, all obeying the first-order kinetics. the first rate (k//1), which is the fastest one, is hypothetically attributed to the swelling action of eda-monohydrate in the amorphous region of cellulose; the second rate (k//2), which is extremely slow, is responsible for the penetration of swelling species into the crystallites, accompanied by breakage of the hydrogen bonds in these regions; and the third rate (k//3), which is faster than k//2 but slower than k//1, has been assigned to the decrystallization of the crystalline regions. the increase in temperature of swelling (from 10 $degree$ c to 55 $degree$ c) brought about increase in all these three rates with shortening of their respective periods. 7 refs
이전글 다음글 목록