- Accession Number
- ZL808-0031
- Document Delivery
- The Genuine Article
Number: ZL808
- Authors
- Oztop
HN. Saraydin
D. Caldiran Y. Guven
O.
- Title
- INFLUENCE OF SOME AROMATIC AMINO ACIDS ON THE SWELLING BEHAVIOR OF
ACRYLAMIDE/MALEIC ACID HYDROGEL
- Source
- Polymer Bulletin. 40(4-5):575-581, 1998
Apr-May.
- ISSN
- 0170-0839
- KeyWords Plus
- Bovine serum-albumin. Adsorption. Biocompatibility.
- Abstract
- Influence of some aromatic amino acids (histidine, phenylalanine and
tryptophan) on the swelling behavior of acrylamide/maleic acid hydrogel (AAm/MA)
prepared by gamma-radiation was investigated. Swelling tests of AAm/MA
hydrogel were made in buffer solutions and amino acid solutions at various
pH at 37 degrees C. The pH values are ionization of alpha-carboxyl groups (pK(1)'),
alpha-amino groups (pK(2)') and, isoelectric points (pI) of amino acids. The
swelling of AAm/MA hydrogel increased when pH values of solutions were
increased. The value of equilibrium swelling of AAm/MA hydrogel was 1035% at
pH 10 buffer, while it was 880% at pH 2 buffer. The values of equilibrium
swelling of AAm/MA hydrogel in phenylalanine, tryptophan and histidine
solutions varied among 1130-1245% at pH 10, while they were among 790-975%
at pH 2. The rate constant of swelling, diffusional exponent, network
parameter and, diffusion and intrinsic diffusion coefficient were calculated
by swelling kinetics. Diffusion of the penetrants into the hydrogel was
found to be non-Fickian character. The diffusion coefficients of the
hydrogel varied between 3.33x10(-6) -7.71x10(6) cm (2)s(-1), while the
intrinsic diffusion coefficients varied between 4.03x10(-6)-8.48x10(-6) cm
(2)s(-1). [References: 15]
- Language
- English
- Publication Type
- Article
- CC Categories
- Organic chemistry/polymer science.
- Subset
- Current Contents/Physical, Chemical & Earth Sciences
- Institution
- Reprint available from
- Saraydin D
- CUMHURIYET UNIV DEPT CHEM TR-58140 SIVAS
TURKEY
- CUMHURIYET UNIVDEPT CHEM TR-58140 SIVAS
TURKEY
- ADNAN MENDERES UNIV DEPT CHEM
TR-09010 AYDIN TURKEY
- HACETTEPE UNIV DEPT CHEM TR-06532 ANKARA TURKEY