title: Enhancement of hydrogen gas permeability in electrically aligned MWCNT-PMMA composite membranes.
abstract: The multi-walled carbon nanotube (MWCNT) dispersed polymethylmethacrylate (PMMA) composite membranes have been prepared for hydrogen gas permeation application. Composite membranes are characterized by Raman spectroscopy, optical microscopy, X-ray diffraction, electrical measurements and gas permeability measurements. The effect of electric field alignment of MWCNT in PMMA matrix on gas permeation has been studied for hydrogen gas. The permeability measurements indicated that the electrically aligned MWCNT in PMMA has shown almost 2 times higher permeability for hydrogen gas as compare to randomly dispersed MWCNT in PMMA. The enhancement in permeability is explained on the basis of well aligned easy channel provided by MWCNT in electrically aligned sample. The effect of thickness of membrane on the gas permeability also studied and thickness of about 30microm found to be optimum thickness for fast hydrogen gas permeates.
authors.affiliation: Department of Physics, University of Rajasthan, Jaipur, India. sumitphy11@gmail.com
authors.forename: Sumit
authors.initials: S
authors.lastname: Kumar
authors.forename: Anshu
authors.initials: A
authors.lastname: Sharma
authors.forename: Balram
authors.initials: B
authors.lastname: Tripathi
authors.forename: Subodh
authors.initials: S
authors.lastname: Srivastava
authors.forename: Shweta
authors.initials: S
authors.lastname: Agrawal
authors.forename: M
authors.initials: M
authors.lastname: Singh
authors.forename: Kamlendra
authors.initials: K
authors.lastname: Awasthi
authors.forename: Y K
authors.initials: YK
authors.lastname: Vijay