Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 12, Pages 6745-6753Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b00196
Keywords
high porosity; supermacroporous; polystyrene; oil-water separation; gas permeability
Funding
- National Natural Science Foundation of China [91127018, U1162113]
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Two types of monolith high-porosity supermacroporous polystyrene materials had been controlled synthesized from water-in-oil Pickering emulsions. The first type, closed-cell high-porosity (up to 91%) supermacroporous (ca. 500 mu m) polystyrene materials (CPPs) was prepared by employing amphiphilic carbonaceous microspheres (CMs) as high internal phase emulsion stabilizer without any inorganic salts or further modifying the wettability of the particles. The second type, hierarchical porous polystyrene materials with highly interconnected macropores (IPPs), was constructed from emulsions stabilized simultaneously by CM particles and a little amount of surfactants. Both types of these monolith porous polystyrene materials possessed excellent mechanical strength. The CPPs were used as absorbents for oil-water separation and high absorption capacity, and absorption rate for oils were realized, which was attributed to their porosity structure and the swelling property of the polystyrene, while the IPPs were highly permeable for gases due to their interconnected macropores.
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