The effects of surface chemistry of nanofillers
on gas separation performance of thin film nanocomposite (TFN)
membranes were studied. Ehsan Chehrazi and
coworkers developed pristine and three differently surface-modified halloysite
nanotubes (HNTs), by non- (SHNT), moderately (ASHNT), or highly CO2-philic
(SFHNT) agents.
Nanomaterials are embedded in the polyamide top layer of thin
film nanocomposite (TFN) membranes for CO2/N2 and CO2/CH4 separations. Authors
demonstrated that the thickness of the interfacial layer between the filler and
polymer matrix is a function of gas pressure applied on the membrane.