55 Water uptake in chemically crosslinked poly(acrylamide-co-crotonic acid) hydrogels

Author(s): Karadag, E; Uzum, OB; Saraydin, D

Title: Water uptake in chemically crosslinked poly(acrylamide-co-crotonic acid) hydrogels

Source: MATERIALS & DESIGN, 26 (4): 265-270 JUN 2005

Language: English

Document Type: Article

Author Keywords: types of material; material science; characterisation and testing of materials

Keywords Plus: SWELLING BEHAVIOR; AQUEOUS-SOLUTIONS; RADIATION; ADSORPTION; ACRYLAMIDE; RELEASE

Abstract: The aim of this study was to investigate that swelling capability of acrylamide (AAm) hydrogels by adding hydrophilic co-monomer such as crotonic acid (CA). Superswelling poly(acrylamide/crotonic) acid, poly(AAm-co-CA) hydrogels were prepared by free radical polymerization in aqueous solution of AAm with CA. For each copolymerization, four different composition of CA and a concentration of multifunctional crosslinkers such as ethylene glycol dimethacrylate (EGDMA) and N,N ''-methylenebisacrylamide (NMBA) were used. Equilibrium swelling, some swelling kinetics parameters such as the initial swelling rate, swelling rate constant, theoretical equilibrium swelling and diffusional parameters such as swelling exponent, swelling constant and diffusion coefficients of hydrogels have been determined by swelling studies. At the end of dynamic swelling tests, relative content of CA on the swelling properties were examined. It has seen that, if CA contents were increased, equilibrium swelling of the hydrogels were higher than. Poly (AAm-co-CA) hydrogels were swollen in the range 1843-2577% in water, while poly(AAm) hydrogels swelled as 1729-1798%. Equilibrium water content of poly(AAm-co-CA) hydrogels were calculated in the range 0.9473-0.9626. Swelling exponents of poly (AAm-co-CA) hydrogels has calculated as 0.58-0.69. Water intake of hydrogels followed a non-Fickian type diffusion. (c) 2004 Elsevier Ltd. All rights reserved.

Addresses: Adnan Menderes Univ, Fen Edebiyat Fac, Dept Chem, TR-09010 Aydin, Turkey; Cumhuriyet Univ, Dept Chem, Hydrogel Res Lab, TR-58140 Sivas, Turkey

Reprint Address: Karadag, E, Adnan Menderes Univ, Fen Edebiyat Fac, Dept Chem, TR-09010 Aydin, Turkey.

E-mail Address: ekaradag@adu.edu.tr

Cited References: ACHARYA A, 2002, RADIAT PHYS CHEM, V65, P225.
ALVAREZLORENZO C, 2002, J CONTROL RELEASE, V80, P247.
BAJPAI AK, 2003, CARBOHYD POLYM, V53, P271.
BYRNE ME, 2002, ADV DRUG DELIVER REV, V54, P149.
DURAN S, 1999, NUCL INSTRUM METH B, V151, P196.
ENDE MTA, 1997, J CONTROL RELEASE, V48, P47.
GUPTA P, 2002, DRUG DISCOV TODAY, V7, P569.
GUVEN O, 1999, RADIAT PHYS CHEM, V56, P381.
HENNINK WE, 2002, ADV DRUG DELIVER REV, V54, P13.
KABIRI K, 2003, EUR POLYM J, V39, P1341.
KARADAG E, 2001, J MACROMOL SCI PURE, V38, P1105.
KARADAG E, 2002, EUR POLYM J, V38, P2133.
KARADAG E, 2002, TURK J CHEM, V26, P863.
LEE SJ, 2000, CARBOHYD POLYM, V41, P197.
LUGAO AB, 2001, NUCL INSTRUM METH B, V185, P37.
OZTURK V, 2002, POLYMER, V43, P5017.
PEPPAS NA, 1983, J POLYM SCI POL PHYS, V21, P983.
ROSSO F, 2003, MAT SCI ENG C-BIO S, V23, P371.
SARAYDIN D, 2002, J MATER SCI, V37, P3217.
SARAYDIN D, 2002, PROCESS BIOCHEM, V37, P1351.
SEN M, 2002, RADIAT PHYS CHEM, V64, P35.
SOLPAN D, 2003, RADIAT PHYS CHEM, V66, P117.

Cited Reference Count: 22

Times Cited: 1

Publisher: ELSEVIER SCI LTD

Publisher Address: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISSN: 0261-3069

29-char Source Abbrev.: MATER DESIGN

ISO Source Abbrev.: Mater. Des.

Source Item Page Count: 6

Subject Category: Materials Science, Multidisciplinary

ISI Document Delivery No.: 906XF