Organophosphorus Polyurethane Ionomers as Water Vapor Permeable and Pervaporation Membranes.

Autor: Davletbaeva IM; Department of Synthetic Rubber, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia., Sazonov OO; Department of Synthetic Rubber, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia., Zakirov IN; Department of Synthetic Rubber, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia., Gumerov AM; Department of Synthetic Rubber, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia., Klinov AV; Department of Chemical Process Engineering, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia., Fazlyev AR; Department of Chemical Process Engineering, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia., Malygin AV; Department of Chemical Process Engineering, Kazan National Research Technological University, 68 Karl Marx st., Kazan 420015, Russia.
Jazyk: angličtina
Zdroj: Polymers [Polymers (Basel)] 2021 Apr 29; Vol. 13 (9). Date of Electronic Publication: 2021 Apr 29.
DOI: 10.3390/polym13091442
Abstrakt: Organophosphorus polyurethane ionomers (AEPA-PU) based on aminoethers of ortho -phosphoric acid (AEPA) were obtained and studied as pervaporation membrane materials for separating isopropanol/water mixtures. The regularities of the change in the water vapor permeability of AEPA-PU were also investigated. It has been established that an increase of solute content in the composition of the urethane-forming system and the content of ionogenic groups in AEPA leads to a noticeable increase in the vapor permeability of the resulting film materials. An increase in water vapor permeability values is accompanied by a significant increase in the pervaporation characteristics of AEPU-PU. It was shown that the conditions promoting clustering of phosphate anions cause an increase in the values of the vapor permeability coefficient of AEPA-PU obtained using polyoxypropylene glycol. However, the hydrophobicity of the polypropylene glycol surrounding the clusters makes it difficult for water to move through the polymer matrix. Due to the hydrophilicity of polyoxyethylene glycol, the highest values of water vapor permeability and pervaporation characteristics are achieved for AEPA-PU synthesized using PEG.
Databáze: MEDLINE
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