INFLUENCE OF DIFFERENT MEDIA ON MICROMORPHOLOGY OF RADIATION SYNTHESIZED POLY(ACRYLAMIDE SODIUM ACRYLATE) HYDROGELS

Authors
Citation
J. Shan et al., INFLUENCE OF DIFFERENT MEDIA ON MICROMORPHOLOGY OF RADIATION SYNTHESIZED POLY(ACRYLAMIDE SODIUM ACRYLATE) HYDROGELS, Polymer Journal, 30(7), 1998, pp. 585-588
Citations number
10
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
00323896
Volume
30
Issue
7
Year of publication
1998
Pages
585 - 588
Database
ISI
SICI code
0032-3896(1998)30:7<585:IODMOM>2.0.ZU;2-6
Abstract
Poly(acrylamide-sodium acrylate) hydrogels were synthesized by Co-60-g amma ray radiation polymerization in aqueous solutions. The micromorph ology of hydrogel samples dehydrated in the different alcohol media su ch as methanol, ethyl alcohol, n-propyl alcohol, iso-propyl alcohol, a nd tert-butyl alcohol was observed by scanning electron microscope (SE M). The critical concentrations at volume phase transition of the hydr ogels in the different alcohol medium-water solutions were obtained. T he results indicate that the hydrogel samples dehydrated in methanol a nd in ethyl alcohol display bubble-film network structures, and those in il-propyl alcohol and in iso-propyl alcohol and in tert-butyl alcoh ol demonstrate the porous structures including the dense phase. The re ason is discussed from the critical concentrations and solubility para meters of different alcohol media.