TY - JOUR
T1 - A compatible crosslinker for enhancement of CO2 capture of poly(amidoamine) dendrimer-containing polymeric membranes
AU - Taniguchi, Ikuo
AU - Kai, Teruhiko
AU - Duan, Shuhong
AU - Kazama, Shingo
AU - Jinnai, Hiroshi
N1 - Funding Information:
This work was supported in part by the Japanese Ministry of Economy, Trade and Industry , Nippon Steel Engineering Co., Ltd. , JST A-STEP ( AS251Z01541M ) and KRI Inc . The authors are thankful for the assistance of Ms. Hiromi Urai, Kae Kinugasa, Keiko Ida and Rie Sugimoto throughout the membrane fabrication processes, NMR, and gas chromatography measurements.
Publisher Copyright:
© 2014 Elsevier B.V.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Poly(amidoamine) (PAMAM) dendrimers are physically immobilized in a crosslinked poly(ethylene glycol) (PEG) upon photopolymerization of PEG dimethacrylates (PEGDMAs) in the presence of the dendrimers in ethanol. The dendrimer-containing polymeric membranes exhibit excellent CO2 separation properties over smaller H2. However, immiscibility of PEG matrix and the dendrimer results in the formation of a bicontinuous phase-separated structure on a couple of microns scale, which inhibits to reduce the membrane thickness for enhancement of the CO2 permeability. A compatible crosslinker, 4GMAP, is developed from the dendrimer and glycidyl methacrylate. Incorporation of the compatible crosslinker in the photopolymerization suppresses the macrophase separation between PAMAM dendrimer and PEG matrix and allows preparation of polymeric membranes as thin as 10μm with high CO2 selectivity. The 4GMAP incorporation also endows pressure tolerance by increasing crosslinking density of the resulting polymeric membranes. The CO2 permeance is elevated from 9.94×10-13 to 1.68×10-11m3(STP)m-2s-1Pa-1, by reducing the membrane thickness from 640 to 9.5μm with 10 of CO2 selectivity at 313K and 0.56MPa of CO2 partial pressure.
AB - Poly(amidoamine) (PAMAM) dendrimers are physically immobilized in a crosslinked poly(ethylene glycol) (PEG) upon photopolymerization of PEG dimethacrylates (PEGDMAs) in the presence of the dendrimers in ethanol. The dendrimer-containing polymeric membranes exhibit excellent CO2 separation properties over smaller H2. However, immiscibility of PEG matrix and the dendrimer results in the formation of a bicontinuous phase-separated structure on a couple of microns scale, which inhibits to reduce the membrane thickness for enhancement of the CO2 permeability. A compatible crosslinker, 4GMAP, is developed from the dendrimer and glycidyl methacrylate. Incorporation of the compatible crosslinker in the photopolymerization suppresses the macrophase separation between PAMAM dendrimer and PEG matrix and allows preparation of polymeric membranes as thin as 10μm with high CO2 selectivity. The 4GMAP incorporation also endows pressure tolerance by increasing crosslinking density of the resulting polymeric membranes. The CO2 permeance is elevated from 9.94×10-13 to 1.68×10-11m3(STP)m-2s-1Pa-1, by reducing the membrane thickness from 640 to 9.5μm with 10 of CO2 selectivity at 313K and 0.56MPa of CO2 partial pressure.
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U2 - 10.1016/j.memsci.2014.10.015
DO - 10.1016/j.memsci.2014.10.015
M3 - Article
AN - SCOPUS:84910669448
VL - 475
SP - 175
EP - 183
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -