TY - JOUR

T1 - Advanced membranes containing star macromolecules with C-60 core for intensification of propyl acetate production

AU - Pulyalina, Alexandra

AU - Toikka, Alexander

AU - Polotskaya, Galina

AU - Faykov, Ilia

AU - Rudakova, Daria

AU - Chislova, Irina

AU - Vinogradova, Ludmila

AU - Porotnikov, Dmitry

AU - Rostovtseva, Valeriia

N1 - Funding Information: Alexandra Pulyalina is grateful to the Saint Petersburg State University (project 12.42.718.2017). The pervaporation experiments, membrane forming and characterization was funded by RFBR according to the research project no 18-33-01203. Equipment of Resource Centers of Saint Petersburg State University, namely, “Chemical Analysis and Materials Research Centre”, Interdisciplinary Resource Center “Nanotechnologies”, “Thermogravimetric and calorimetric methods of investigation”, Centre for X-ray Diffraction Studies and Education Resource Centre in the direction of chemistry were used for investigation.

PY - 2018/7

Y1 - 2018/7

N2 - In the present work transport properties of novel polymer materials were studied in separation of quaternary mixture (n-propanol–acetic acid–propyl acetate–water) and binary mixture (water–acetic acid) by pervaporation that can be used in hybrid process “reaction + pervaporation” to optimize of the propyl acetate production. Physical methods are successfully used to modernize properties of polymer materials without changing the chemical structure of macromolecules. Poly(phenylene oxide) membrane was modified by novel star shaped macromolecules with fullerene С 60 core and arms of different nature. They are twelve-arm star consisted of six nonpolar arms of polystyrene and six polar arms of poly-2-vinylpyridine that are covalently bonded to C 60 core. The membrane structure and thermal stability were studied by SEM, DSC, and TGA. To characterize physical properties, density and contact angles were determined. Membranes modified with the star macromolecules exhibit selectivity to water. The growth of modifier content up to 5 wt% leads to increase of the membrane performance and selectivity, which provides shifting the esterification reaction equilibrium and increasing the ester yield.

AB - In the present work transport properties of novel polymer materials were studied in separation of quaternary mixture (n-propanol–acetic acid–propyl acetate–water) and binary mixture (water–acetic acid) by pervaporation that can be used in hybrid process “reaction + pervaporation” to optimize of the propyl acetate production. Physical methods are successfully used to modernize properties of polymer materials without changing the chemical structure of macromolecules. Poly(phenylene oxide) membrane was modified by novel star shaped macromolecules with fullerene С 60 core and arms of different nature. They are twelve-arm star consisted of six nonpolar arms of polystyrene and six polar arms of poly-2-vinylpyridine that are covalently bonded to C 60 core. The membrane structure and thermal stability were studied by SEM, DSC, and TGA. To characterize physical properties, density and contact angles were determined. Membranes modified with the star macromolecules exhibit selectivity to water. The growth of modifier content up to 5 wt% leads to increase of the membrane performance and selectivity, which provides shifting the esterification reaction equilibrium and increasing the ester yield.

KW - Esterification

KW - Membranes

KW - Pervaporation

KW - Poly(phenylene oxide)

KW - Star polymers

UR - http://www.scopus.com/inward/record.url?scp=85048565374&partnerID=8YFLogxK

U2 - 10.1016/j.cherd.2018.05.034

DO - 10.1016/j.cherd.2018.05.034

M3 - Article

VL - 135

SP - 197

EP - 206

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

SN - 0263-8762

ER -