Hydrophilic polydimethylsiloxane-based sponges for dewatering applications

IM Sosnin, S Vlassov, EG Akimov, VI Agenkov, LM Dorogin

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Separation of water from non-polar liquid mixtures (dewatering) is a challenging, yet an important problem in such fields as petroleum industry and power coolants. We describe a method of fabrication and properties of a high-capacity hydrophilic sponge based on polydimethylsiloxane (PDMS). The sponge is obtained by addition of 1-octanol and incorporating zinc chloride powder template in the precursor PDMS liquid followed by heat curing at 115 °C with subsequent elution of the template. The produced PDMS sponges have water absorbing capacity reaching approx. 1600%, which is two times higher than typically known for dewatering sorbents. Those high-capacity sponges may find use as dewatering agents for oils, hydrocarbons and other nonpolar liquids.
Original languageEnglish
Article number127278
Number of pages4
JournalMaterials letters
Volume263
DOIs
Publication statusPublished - 15 Mar 2020
Externally publishedYes

Keywords

  • Adhesion
  • Dewatering
  • Polymers
  • Silicone elastomer
  • Sponge
  • Swelling
  • n/a OA procedure

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