화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.96, 144-155, April, 2021
DOI10.1016/j.jiec.2021.01.015  Export Citation
Facile hydrophilic modification of polydimethylsiloxane-based sponges for efficient oil.water separation
Chao-Jen Wang, Wei-Fan Kuan, Hui-Ping Lin, Yury A. Shchipunov1, and Li-Jen Chen†
  • Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
  • 1Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok 690022, Russia, Russian Federation
E-mail:
In this study, an eco-friendly fabrication process for the hydrophilic polydimethylsiloxane (PDMS)-based sponge was proposed with the assistance of sugar templates and poly(dimethylsiloxane-b-ethylene oxide) (PDMS-b-PEO) block copolymer additives. The effects of sugar loadings and sugar particle sizes on sponge structure and separation performance were investigated. Manipulating sugar loadings exhibited a unique control over the porosity of sponge, which further influenced the absorption capacity and oil. water separation speed. Additionally, the surface modification of PDMS sponge from hydrophobic/ oleophilic to hydrophilic/underwater oleophobic was achieved by incorporating PDMS-b-PEO. Such modified sponge demonstrated an underwater oil contact angle of 154° and a stable separation efficiency greater than 99.9% in the gravity-driven cycled filtration tests. The hydrophilic PDMS-b-PEO modified sponges highlighted herein reveal a promising potential for novel separation materials with energyefficient and cost-effective features, which are ideal for oil spill clean-up events and wastewater treatment application.
Keywords:PDMS sponge;Oil-water separation;Surface modification;PDMS-b-PEO;Hydrophilicity;Underwater oleophobicity
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