A study on the swelling behavior of poly(acrylic acid) hydrogels obtained by electron beam crosslinking

Poly(acrylic acid) (PAA) hydrogels were prepared by using electron beam (EB) crosslinking of PAA homopolymer from its aqueous solutions. The swelling behavior of the hydrogels was studied as a function of the concentration of PAA solution, radiation dose, pH of the swelling medium and swelling time....

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Published inRadiation physics and chemistry (Oxford, England : 1993) Vol. 79; no. 6; pp. 735 - 739
Main Authors Sheikh, N., Jalili, L., Anvari, F.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2010
Subjects
Aqueous solutions
Crosslinking
Diffusion
Diffusion effects
Diffusion mode
EB-crosslinking
Electron beams
Hydrogel
Hydrogels
pH-sensitive
Poly(acrylic acid)
Swelling
Swelling behavior
pH-sensitive
Diffusion mode
Poly(acrylic acid)
Hydrogel
Swelling behavior
EB-crosslinking
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Summary:Poly(acrylic acid) (PAA) hydrogels were prepared by using electron beam (EB) crosslinking of PAA homopolymer from its aqueous solutions. The swelling behavior of the hydrogels was studied as a function of the concentration of PAA solution, radiation dose, pH of the swelling medium and swelling time. Also the environmental pH effect on the water diffusion mode into hydrogels was investigated. These hydrogels clearly showed pH-sensitive swelling behavior with Fickian type of diffusion in the stomach-like pH medium (pH 1.3) and non-Fickian type in the intestine-like pH medium (pH 6.8).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2009.12.013