Radiation induced acrylamide/citric acid hydrogels and their swelling behaviors
JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, cilt.38, sa.11, ss.1105-1121, 2001 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 38 Sayı: 11
- Basım Tarihi: 2001
- Doi Numarası: 10.1081/ma-100107132
- Dergi Adı: JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1105-1121
- Çanakkale Onsekiz Mart Üniversitesi Adresli: Hayır
Özet
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.