Control of osmotic pressure through CO2-capture and release facilitated by the lower critical solution temperature (LCST) phase transition of acylated branched polyethylenimine

Jeongseon Park, Minwoo Noh, Min Keun Chey, Yeongbong Mok, Ji-Hun Seo, Yan Lee

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2 Citations (Scopus)


A solution of acylated polyethylenimine can absorb CO2 at low temperatures to elevate the osmotic pressure and draw water from a high-salt saline solution. Such a solution can be phase-separated to liberate CO2 by mild heating at 40°C, and the osmotic pressure can be effectively reduced for water release into a low-salt saline solution. The osmotic pressure-controlling system has the potential to be used as a draw solution for forward osmosis.

Original languageEnglish
Pages (from-to)26526-26530
Number of pages5
JournalRSC Advances
Issue number32
Publication statusPublished - 2016 Jan 1


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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