Premium
Fabrication of PEI‐grafted porous polymer foam for CO 2 capture
Author(s) -
Deng Jingqian,
Liu Zuolong,
Du Zhongjie,
Zou Wei,
Zhang Chen
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47844
Subject(s) - adsorption , polymer , materials science , desorption , chemical engineering , emulsion , acrylate , polymerization , polymer chemistry , emulsion polymerization , porosity , grafting , copolymer , chemistry , composite material , organic chemistry , engineering
A polymer foam material with both the open‐cell porous structure and the polyethylenemine (PEI)‐grafted inner face was constructed for CO 2 capture. The porous poly(tert‐butyl acrylate) foam was first prepared via a concentrated emulsion polymerization, and then the carboxyl groups were introduced on the interface of porous polymer after the hydrolysis reaction. Subsequently, the surface of the foam was grafted with PEI, and finally the PEI‐grafted porous polymer foam designed as a CO 2 capture material was obtained. The structures of the foams were characterized by infrared spectroscopy, EDS, and SEM. The CO 2 adsorption properties were measured by adsorption/desorption cycles. As a result, the polymer foam contained a large number of amine groups (13.9 wt % N), and therefore possessed a high CO 2 adsorption capacity (5.91 mmol g −1 at 40°C and 100 kPa). In addition, they also exhibited high CO 2 adsorption rate, good selectivity for CO 2 ‐N 2 separation, and good stability according to CO 2 cyclic adsorption/desorption test. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47844.