| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | EUROPEAN POLYMER JOURNAL; v. 45, n. 4, p. 1232-1238, APR 2009. |
| Web of Science Citations: | 29 |
| Abstract | |
In this paper, the synthesis and structural characterization of a series of polyacrylamide hydrogels with different degrees of reticulation are reported. Although the Equilibrium Swelling Theory was recognized as a simple and reliable tool for the determination of structural hydrogels network parameters like equilibrium degree of swelling, cross-link ratio and mesh size, this is the first application of this methodology for polyacrylamide hydrogels. By changing the total monomer content in the synthesis solution (%T) from 5 to 30%, at a fixed value of cross-linker content in the total monomer amount (%C) of 5%, the final parameter obtained, the mesh size, can be tuned from 2 to 0.3 nm. It was also possible to change the mesh size (0.19-0.35) by varying %C from 5 to 12% (at %T = 20%). Scanning Electron Microscopy images for the most different formulations are shown and corroborate data obtained from the theory. (c) 2008 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 03/10015-3 - Organized arrays of macromolecules and nanostructures for the development of sensors and microbatteries |
| Grantee: | Roberto Manuel Torresi |
| Support Opportunities: | PRONEX Research - Thematic Grants |