Radiation induced acrylamide/citric acid hydrogels and their swelling behaviors

被引：46
作者：
Karadag, E
Saraydin, D [1 ]
Sahiner, N
Güven, O
机构：
[1] Cumhuriyet Univ, Dept Chem, Hydrogel Res Lab, TR-58140 Sivas, Turkey
[2] Adnan Menderes Univ, Dept Chem, TR-09010 Aydin, Turkey
[3] Hacettepe Univ, Dept Chem, TR-06532 Ankara, Turkey
来源：
JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY | 2001年 / 38卷 / 11期
关键词：
acrylamide; citric acid; hydrogel; gamma radiation; swelling; polymer;
D O I：
10.1081/MA-100107132
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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.
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页码：1105 / 1121
页数：17
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