期刊
POLYMER CHEMISTRY
卷 7, 期 32, 页码 5132-5138出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6py01122e
关键词
-
资金
- Ministry of Higher Education, Science and Technology of the Republic of Slovenia
- Slovenian Research Agency [P2-0145]
Highly porous hydrogels based on functionalized glycidyl methacrylate (GMA) have been successfully prepared through the high internal phase oil-in-water emulsions. Pre-polymerization functionalization of the GMA monomer, porous structure and water uptake of highly porous hydrogels were investigated. The primary amine groups of tris(2-aminoethyl)amine (TRIS) or 1,2-diaminoethane (EDA) were found to react in three distinct reactions with the GMA, giving a mixture of methacrylate and methacrylamide as the major products with a small amount of the aza-Michael addition product. Elemental analysis revealed nitrogen loadings of 5.3 and 4.6 mmol g(-1) for the hydrogel polyHIPEs prepared from the pre-functionalized GMA with TRIS and EDA, respectively. The aminated p(GMA)-based hydrogel polyHIPEs had the densities of around 0.16 g cm(-3), void diameters of around 5.5 mu m, water uptake up to 15 g g(-1) and the specific surface area up to 55 m(2) g(-1). The water uptake and the specific surface area were found to be between 4 and 5 times higher than the corresponding values for the conventional GMA-based polyHIPEs prepared from the water-in-oil HIPEs. These results demonstrate a highly efficient pre-polymerization functionalization method for the preparation of GMA-based hydrogel polyHIPEs.
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