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Paper Information

Journal:   IRANIAN POLYMER JOURNAL (ENGLISH)   OCTOBER 2005 , Volume 14 , Number 10 (64); Page(s) 863 To 873.
 
Paper: 

A STUDY ON SWELLING AND COMPLEX FORMATION OF ACRYLIC ACID AND METHACRYLIC ACID HYDROGELS WITH POLYETHYLENE GLYCOL

 
 
Author(s):  JAFARI SHAGHAYEGH, MODARES H.*
 
* Chemical Engineering Department, Amir Kabir University of Technology, Tehran, I.R. Iran
 
Abstract: 

Acrylic acid and methacrylic acid hydrogels were prepared by N,N'-methylene bis acrylamid cross-linking. The rate of swelling of prepared hydrogels in different buffers were studied and their molar mass and density of cross-linking, were determined. The results indicated that at higher pH, the acrylic acid hydrogels have higher degree of swelling than the methacrylic acid hydrogels. Also the complex formation between polyethylene glycol and either of acrylic and methacrylic acid hydrogels at various pHs were studied. It was concluded that methacrylic acid hydrogels can form stronger complexes than acrylic acid hydrogels, and the acidic pHs promote the complex formation. However the complexed hydrogels indicated lower degree of swelling.

 
Keyword(s): HYDROGEL, ACRYLIC ACID, COMPLEX FORMATION, DIFFUSION, COLLAPSE OF HYDROGELS
 
References: 
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