Premium
The fabrication of 3D porous PDMS sponge for Oil and organic solvent absorption
Author(s) -
Guo Jiahong,
Wang Jikui,
Wang Wenqi,
Bai Zhiwei,
Zhang Zhibing,
Zhang Yajuan,
Zhang Shiping
Publication year - 2019
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12924
Subject(s) - prepolymer , materials science , contact angle , fabrication , chemical engineering , porosity , solvent , curing (chemistry) , polymerization , absorption of water , oil spill , nanotechnology , composite material , organic chemistry , polymer , chemistry , environmental engineering , polyurethane , environmental science , medicine , alternative medicine , pathology , engineering
The separation of oil–water mixtures is increasingly desired due to the environmental protection and industrial production. However, the low‐oil capacity and complicated procedures in current systems remain challenging issues. Herein, porous polydimethysiloxane (PDMS) sponges are fabricated by polymerization of the prepolymer and a curing agent with the combination of NaHCO 3 foaming and CO 2 template method, which is novel, simple, and economical. EDS and XPS measurements prove the successful fabrication of PDMS sponges. This as‐prepared PDMS sponges show high absorption capacity (694–2513%), hydrophobicity/oleophilicity property (water contact angle and oil contact angle are 139° and 0°), and excellent thermal property. The PDMS sponges can selectively absorb a large amount of floating oils on the water surface and heavy oils under the water, and show little change of its capacities after 20 absorbing/reabsorbing cycles. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S86–S92, 2019