1 research outputs found
Interconnectivity of Macroporous Hydrogels Prepared via Graphene Oxide-Stabilized Pickering High Internal Phase Emulsions
Interconnected
macroporous poly(acrylic acid) (PAA) hydrogels are
prepared via oil-in-water (o/w) Pickering high internal phase emulsion
(HIPE) templates stabilized by graphene oxide (GO). The amphiphilicity
of GO is adjusted by slight modification with cetyltrimethylammonium
bromide (CTAB). The morphology of macroporous PAA is observed by a
field-emission scanning electron microscope (FE-SEM). The gas permeability
is characterized to evaluate the interconnectivity of polymer foams.
The pore and pore throat size can be tailored by varying the wettability
and concentration of GO. The selective adsorption toward dyes of PAA
hydrogels is proved. Macroporous PAA hydrogels with an open-cell structure
show enhanced adsorption behavior of both methylene blue (MB) and
copper(II) ions