Synthesis and Characterization of N-[3-(Dimethylamino)propyl]methacrylamide / (nano SiO2, amine-modified nano SiO2, and expanded perlite) Nanocomposite Hydrogels

Abstract

The nanocomposite hydrogel of N- [3-(dimethylamino)propyl]methacrylamide (DMAPMAAm) with different SiO2 particles were prepared by free radical polymerization. The nano-SiO2 as reinforcement material was used in original, hydrophilic and perlite forms. The swelling values of nanocomposite hydrogels containing amine-modified nano-SiO2 were found to be higher than those of the original DMAPMAAm hydrogel and the nanocomposite hydrogel containing original SiO2. SEM and mapping studies with SEM proved the presence of nano-SiO2 particles incorporated into the hydrogel structure.

Synthesis, characterization and adsorption studies of nano-composite hydrogels and the effect of SiO2 on the capacity for the removal of Methylene Blue dye

“…The experimental details were given in a previous study. 25 Schematic representations of the possible structures of the homo-and copolymeric hydrogels is given in Scheme 1.…”

“…The other approach comprises the crosslinking of linear polymers by irradiation or by chemical components. [25][26][27][28][29] In this work, nano-SiO 2 doped AA and AA-co-VP nanocomposite hydrogels were synthesized with the purpose of the adsorption of MB dye from wastewater. AA was chosen as a highly hydrophilic co-monomer that supports high swelling, VP as a polar hydrophilic co-monomer that could provide polar interactions with dyes, while the SiO 2 nanofiller should enhance the adsorption of dyes and other polar compounds.…”

Thermal Behavior of Inorganic Hydrogel Composites

“…Chemical degradation in AA and AA/VP based hydrogels occurred in 2-steps due to thermal behavior of acrylic acid. 19 Thermal degradation in the second step occurred between about 250-350 °C. As a result of the addition to homopolymeric hydrogels, the maximum thermal decomposition was observed in the AA-TiO2 composite hydrogel with 0.5 and 1 wt % TiO2.…”