JMCA-A bio-inspired CO2-philic network membrane for enhanced sustainable gas separation
作者：Shuai Quan, a Songwei Li, a Zhenxing Wang, a Xingru Yan, b Zhanhu Guo* b and Lu Shao
關鍵字：Gas separation, membrane
論文來源：期刊
發表時間：2015年
For thefirst time, the exciting reaction between the bio-inspired dopamine and the epoxy functional
poly(ethylene oxide) (PEO) at elevated temperatures was found and utilized for fabricating dopamine/
poly(ethylene oxide) (PEO) network membranes for sustainable gas separation. The gas transport
properties of the synthesized novel membrane were investigated aiming at energy (H2) purification and
CO2capture. The membrane was confirmed to be CO2selective and exhibited relatively high selectivity
especially for CO2/N2 separation. Importantly, the flexible incorporation of low-molecular-weight
poly(ethylene glycol) dimethyl ether (PEGDME) into the swollen network membrane greatly improved the
gas transport performance and the CO2 permeability was increased by 550%. Furthermore, the
temperature and upstream pressure dependence of our developed membranes have been examined in
detail. Surprisingly, the plasticization phenomena in the membranes at higher upstream pressure can be
harnessed to enhance the gas transport performance by increasing both the CO2permeability and the
CO2/other tested gas selectivity mainly due to the network structure and CO2-philic character. This
report will expedite the rapid discovery of new materials derived from bio-inspired dopamine for possibly
solving energy and environmental issues.