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The Effects of Monomer, Crosslinking Agent, and Filler Concentrations on the Viscoelastic and Swelling Properties of Poly(methacrylic acid) Hydrogels: A Comparison by Ninciuleanu, Claudia Mihaela (author);Ianchiş, Raluca (author);Alexandrescu, Elvira (author);Mihăescu, Cătălin Ionuţ (author);Scomoroşcenco, Cristina (author);Nistor, Cristina Lavinia (author);Preda, Silviu (author);Petcu, Cristian (author);Teodorescu, Mircea (author) is a Engineering article available to read on EtoBox.
What is The Effects of Monomer, Crosslinking Agent, and Filler Concentrations on the Viscoelastic and Swelling Properties of Poly(methacrylic acid) Hydrogels: A Comparison about?
The present work aims at comparatively studying the effects of the concentrations of a monomer (10–30 wt% based on the whole hydrogel composition), crosslinking agent (1–3 mol% based on the monomer), and reinforcing agent (montmorillonite-MMT, 1–3 wt.% based on the whole hydrogel composition) on the swelling and viscoelastic properties of the crosslinked hydrogels prepared from methacrylic acid (MAA) and N,N′-methylenebisacrylamide (BIS) in the presence of K~2~S~2~O~8~ in aqueous solution. The viscoelastic measurements, carried out on the as-prepared hydrogels, showed that the monomer concentration had the largest impact, its three-time enhancement causing a 30-fold increase in the storage modulus, as compared with only a fivefold increase in the case of the crosslinking agent and 1.5-fold increase for MMT in response to a similar threefold concentration increase. Swelling studies, performed at three pH values, revealed that the water absorption of the hydrogels decreased with increasing concentration of both the monomer and crosslinking agent, with the amplitude of the effect of concentration modification being similar at pH 5.4 and 7.4 in both cases, but very different at pH 1.2.
Who reads The Effects of Monomer, Crosslinking Agent, and Filler Concentrations on the Viscoelastic and Swelling Properties of Poly(methacrylic acid) Hydrogels: A Comparison?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Ninciuleanu, Claudia Mihaela (author);Ianchiş, Raluca (author);Alexandrescu, Elvira (author);Mihăescu, Cătălin Ionuţ (author);Scomoroşcenco, Cristina (author);Nistor, Cristina Lavinia (author);Preda, Silviu (author);Petcu, Cristian (author);Teodorescu, Mircea (author)
- Publisher
- MDPI AG
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)