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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2014, Volume 51, Issue 2,





ADELINA DAVID, MIRCEA TEODORESCU, PAUL O. STANESCU, STEFANIA STOLERIU Novel Poly(ethylene glycol) Composite Hydrogels with Hydrophilic Bentonite Nanoclay as the Filler


Abstract:
Novel composite poly(ethylene glycol) hydrogels with hydrophilic bentonite as the filler were synthesized by the polyaddition reaction between diepoxy-terminated PEG of 2000 Da, 6000 Da and 10000 Da molecular weights and ethylenediamine in aqueous solution at 60°C, in the presence of the clay. The hydrogels prepared were tested from the point of view of their swelling behaviour and mechanical properties. The results showed that the clay practically did not affect both the water absorption by the crosslinked polymer and the storage modulus of the hydrogels. This seems to indicate that the interactions between the PEG chains and bentonite were very small or absent within the hydrogels in the presence of water, although they occurred in dry state, as proven by FTIR and XRD measurements upon xerogels. Keywords: hydrogels; poly(ethylene glycol); bentonite; composite



Issue: 2014 Volume 51, Issue 2
Pages:
Publication date: 2014/6/30
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