직/편성물 염색

Kinetics and Equilibria in Dyeing. N.

  • 출판일2001.06
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 301
Measurements at equilibrium and under kinetic conditions reveal the dye content of dyed fibers and the relationship between dye content and visual appearance. The equilibrium uptake of dye is the maximum dye absorption under specific dyeing conditions. Nernst, Freundlich, and Langmuir sorption isotherms characterize and classify the dye/fiber sorption process. These isotherms represent the relationship of the concentration of the dyebath at constant temperature. Hydrogen bonding, van der Waals forces, covalent bond formation, ion exchange, and hydrophobic bonding are the mechanisms by which dyes adhere to fibers. The final diffusion of the dye from the fiber surface to the interior of the fiber is kinetically controlled. The process involves dye transport to the fiber surface. absorption at the fiber surface, and penetration of the fiber.
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