PlumX Metrics
Embed PlumX Metrics

Pervaporation Membranes Based on Polyelectrolyte Complex of Sodium Alginate/Polyethyleneimine Modified with Graphene Oxide for Ethanol Dehydration

Polymers, ISSN: 2073-4360, Vol: 16, Issue: 9
2024
  • 5
    Citations
  • 0
    Usage
  • 12
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    5
  • Captures
    12
  • Mentions
    1
    • News Mentions
      1
      • 1

Most Recent News

Data on Alcohols Detailed by a Researcher at St. Petersburg State University (Pervaporation Membranes Based on Polyelectrolyte Complex of Sodium Alginate/Polyethyleneimine Modified with Graphene Oxide for Ethanol Dehydration)

2024 MAY 14 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- A new study on alcohols is now available. According

Article Description

Pervaporation is considered the most promising technology for dehydration of bioalcohols, attracting increasing attention as a renewable energy source. In this regard, the development of stable and effective membranes is required. In this study, highly efficient membranes for the enhanced pervaporation dehydration of ethanol were developed by modification of sodium alginate (SA) with a polyethylenimine (PEI) forming polyelectrolyte complex (PEC) and graphene oxide (GO). The effect of modifications with GO or/and PEI on the structure, physicochemical, and transport characteristics of dense membranes was studied. The formation of a PEC by ionic cross-linking and its interaction with GO led to changes in membrane structure, confirmed by spectroscopic and microscopic methods. The physicochemical properties of membranes were investigated by a thermogravimetric analysis, a differential scanning calorimetry, and measurements of contact angles. The theoretical consideration using computational methods showed favorable hydrogen bonding interactions between GO, PEI, and water, which caused improved membrane performance. To increase permeability, supported membranes without treatment and cross-linked were developed by the deposition of a thin dense layer from the optimal PEC/GO (2.5%) composite onto a developed porous substrate from polyacrylonitrile. The cross-linked supported membrane demonstrated more than two times increased permeation flux, higher selectivity (above 99.7 wt.% water in the permeate) and stability for separating diluted mixtures compared to the dense pristine SA membrane.

Bibliographic Details

Dmitrenko, Mariia; Mikhailovskaya, Olga; Dubovenko, Roman; Kuzminova, Anna; Myznikov, Danila; Mazur, Anton; Semenov, Konstantin; Rusalev, Yury; Soldatov, Alexander; Ermakov, Sergey; Penkova, Anastasia

MDPI AG

Chemistry; Materials Science

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know