36 Radiation induced acrylamide/citric acid hydrogels and their swelling behaviors

Author(s): Karadag, E; Saraydin, D; Sahiner, N; Guven, O

Title: Radiation induced acrylamide/citric acid hydrogels and their swelling behaviors

Source: JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 38 (11): 1105-1121 2001

Language: English

Document Type: Article

Author Keywords: acrylamide; citric acid; hydrogel; gamma radiation; swelling; polymer

Keywords Plus: BIOCOMPATIBILITY; COPOLYMERS; SYSTEMS

Abstract: Citric acid (CAc) moieties containing acrylamide (AAm) hydrogels were prepared by gamma irradiation of their aqueous solutions. A possible polymerization and crosslinking mechanism for acrylamide/citric acid (AAm/CAc) hydrogels is proposed. The effects of irradiation dose and citric acid content on swelling behavior were investigated. Swelling took place in water at 25 degreesC and was followed gravimetrically. Incorporation of a relatively low amount of citric acid to acrylamide hydrogel increased its swelling up to 950% from 700%. The diffusion of water into AAm/CAc hydrogels was found to be a non-Fickian type. Diffusion coefficients of AAm/CAc hydrogels found as 5 x 10(-7)- 10 x 10(-7) cm(2) sec(-1). It has also been found that the number average molar mass between crosslinks is increased with the CAc content and decreased with irradiation dose.

Addresses: Cumhuriyet Univ, Dept Chem, Hydrogel Res Lab, TR-58140 Sivas, Turkey; Adnan Menderes Univ, Dept Chem, TR-09010 Aydin, Turkey; Hacettepe Univ, Dept Chem, TR-06532 Ankara, Turkey

Reprint Address: Saraydin, D, Cumhuriyet Univ, Dept Chem, Hydrogel Res Lab, TR-58140 Sivas, Turkey.

Cited References: CAYKARA T, 2000, J POLYM SCI POL PHYS, V38, P2063.
CHACON D, 2000, POLYMER, V41, P8257.
DING ZY, 1991, J POLYM SCI POL PHYS, V29, P1035.
GUVEN O, 1999, RADIAT PHYS CHEM, V56, P381.
HARIHARAN D, 1996, POLYMER, V37, P149.
KARADAG E, 1995, IR J POLYM SCI TECHN, V4, P218.
KARADAG E, 1996, BIOMATERIALS, V17, P67.
KARADAG E, 2001, MACROMOL MATER ENG, V286, P34.
MARTHUR AM, 1996, REV MACROMOL CHEM C, V36, P405.
MASSARO L, 1999, PROG POLYM SCI, V24, P731.
ROSIAK J, 1983, RADIAT PHYS CHEM, V22, P907.
ROSIAK J, 1983, RADIAT PHYS CHEM, V22, P917.
ROSIAK J, 1988, RADIAT PHYS CHEM, V32, P793.
ROSIAK JM, 1999, NUCL INSTRUM METH B, V151, P56.
SAHINER N, 2000, J MACROMOL SCI PURE, V37, P1159.
SARAYDIN D, 1995, POLYM ADVAN TECHNOL, V6, P719.
SARAYDIN D, 1995, RADIAT PHYS CHEM, V46, P1049.
SARAYDIN D, 1995, SEPAR SCI TECHNOL, V30, P3291.
SARAYDIN D, 1995, TURK J CHEM, V19, P179.
SARAYDIN D, 1997, POLYM J, V29, P631.
SARAYDIN D, 2001, J APPL POLYM SCI, V79, P1809.
SARAYDIN D, 2001, J MATER SCI, V36, P2473.
SARAYDIN D, 2001, RADIAT PHYS CHEM, V60, P203.

Cited Reference Count: 23

Times Cited: 6

Publisher: MARCEL DEKKER INC

Publisher Address: 270 MADISON AVE, NEW YORK, NY 10016 USA

ISSN: 1060-1325

29-char Source Abbrev.: J MACROMOL SCI PURE APPL CHEM

ISO Source Abbrev.: J. Macromol. Sci.-Pure Appl. Chem.

Source Item Page Count: 17

Subject Category: POLYMER SCIENCE

ISI Document Delivery No.: 488ET