تم دراسة تاثير درجة الحرارة على الخواص الانتفاخية لحبيبات الجل المائية
Abstract
Due to the fact that many application processes take place at different temperature, better examining and
understanding of swelling properties as a function of temperature is essential for such application. The temperature
effect on the swelling properties of commercial polyacrylic acid (PAA) hydrogel beads was investigated as a
function of time and temperature. Gel bead size, swelling equilibrium capacity, diameter, weight, water retention,
swelling ratio, welling degree and fractional hydration were studied to investigate the swelling properties of
hydrogel bead at a given temperature. Diffusion type and its related parameters were studied and calculated. The
kinetic model was applied on experimental data using second order model, the kinetic parameters were calculated.
The maximum swelling ratio was calculated as 233.7 at 40 ˚C. In experiment of the swelling non- Fickian diffusion
was found.
Publication Date
12/15/2013
Publisher
International journal of Advanced Biological and Biomedical Research
احمد مهدي سعيد محمد | Ahmed Mahdi Saeed Mohammed | 8533