Swelling behavior of poly(N-vinyl-2-pyrrolidone) and poly(N-vinyl-2-pyrrolidone)/K2S2O8 hydrogels in alpha-lactose solutions


Can H., Kavlak S., Kirci B., Guner A.

ADVANCES IN POLYMER TECHNOLOGY, cilt.22, ss.252-259, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 22 Konu: 3
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1002/adv.10054
  • Dergi Adı: ADVANCES IN POLYMER TECHNOLOGY
  • Sayfa Sayıları: ss.252-259

Özet

Hydrogels with varying cross-linking densities, and average molecular weights between two consecutive cross-links, were prepared from the binary poly(N-vinyl-2-pyrrohdone)/water and ternary poly(N-vinyl-2-pyrrolidone)/water/K2S2O8 systems by irradiation withy gamma-rays at ambient temperature. Both hydrogel systems were employed for diffusion and swelling experiments in 0.00278 M alpha-lactose solution at room temperature. Diffusion of alpha-lactose solution into hydrogels was found to be of the Fickian type. The percent swelling, equilibrium swelling, initial rate of swelling, swelling rate of constant, equilibrium water/alpha-lactose content, and diffusion constant values were determined for PVP and PVP/K2S2O8 hydrogel systems in 0.00278 M alpha-lactose solution. (C) 2003 Wiley Periodicals, Inc.