TY - JOUR

T1 - Strongly selective polymer membranes modified with heteroarm stars for the ethylene glycol dehydration by pervaporation

AU - Rostovtseva, Valeriia

AU - Pulyalina, Alexandra

AU - Rudakova, Daria

AU - Vinogradova, Ludmila

AU - Polotskaya, Galina

N1 - Rostovtseva, V.; Pulyalina, A.; Rudakova, D.; Vinogradova, L.; Polotskaya, G. Strongly Selective Polymer Membranes Modified with Heteroarm Stars for the Ethylene Glycol Dehydration by Pervaporation. Membranes 2020, 10, 86.

PY - 2020/5

Y1 - 2020/5

N2 - Hybrid membranes based on poly (2,6-dimethyl-1,4-phenylene oxide) modified with heteroarm stars (HAS) were developed to separate ethylene glycol/water mixtures by pervaporation. The HAS consist of a small branching center fullerene C 60 and twelve arms of different nature, six arms of nonpolar polystyrene and six arms of polar poly-tert-butyl methacrylate. The changes of structure and physical properties with HAS inclusion were systematically studied using SEM, X-ray diffraction analysis, TGA, and contact angle measurements. Mass transfer of ethylene glycol and water through membranes was studied by sorption and pervaporation tests. It was found that the growth of HAS content up to 5 wt% in the membrane leads to an increase in the total flux and a strong increase in the separation factor. To evaluate intrinsic properties of the penetrant ‒membrane system, permeability and selectivity were calculated. Overall, utilizing star-shaped macromolecules as a filler can be a promising way to improve the separation performance of diffusion membranes.

AB - Hybrid membranes based on poly (2,6-dimethyl-1,4-phenylene oxide) modified with heteroarm stars (HAS) were developed to separate ethylene glycol/water mixtures by pervaporation. The HAS consist of a small branching center fullerene C 60 and twelve arms of different nature, six arms of nonpolar polystyrene and six arms of polar poly-tert-butyl methacrylate. The changes of structure and physical properties with HAS inclusion were systematically studied using SEM, X-ray diffraction analysis, TGA, and contact angle measurements. Mass transfer of ethylene glycol and water through membranes was studied by sorption and pervaporation tests. It was found that the growth of HAS content up to 5 wt% in the membrane leads to an increase in the total flux and a strong increase in the separation factor. To evaluate intrinsic properties of the penetrant ‒membrane system, permeability and selectivity were calculated. Overall, utilizing star-shaped macromolecules as a filler can be a promising way to improve the separation performance of diffusion membranes.

KW - Ethylene glycol

KW - Pervaporation

KW - Poly(phenylene oxide)

KW - Star-shaped macromolecules

KW - TRANSPORT-PROPERTIES

KW - MACROMOLECULES

KW - PERFORMANCE

KW - POLYPHENYLENE OXIDE

KW - COMPOSITE MEMBRANES

KW - GAS-TRANSPORT

KW - POLY(PHENYLENE OXIDE) MEMBRANES

KW - star-shaped macromolecules

KW - ethylene glycol

KW - MIXED MATRIX MEMBRANES

KW - SEPARATION

KW - poly(phenylene oxide)

KW - pervaporation

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85084179884&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/5ea1e0fb-1b80-322b-88f2-21c5b5dbbe82/

U2 - 10.3390/membranes10050086

DO - 10.3390/membranes10050086

M3 - Article

AN - SCOPUS:85084179884

VL - 10

JO - Membranes

JF - Membranes

SN - 2077-0375

IS - 5

M1 - 86

ER -