Premium
Small‐angle neutron scattering by porous alumina membranes made of aligned cylindrical channels
Author(s) -
Marchal Damien,
Demé Bruno
Publication year - 2003
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889803000281
Subject(s) - membrane , materials science , scattering , porosity , coaxial , small angle neutron scattering , neutron scattering , isotropy , small angle scattering , optics , scanning electron microscope , composite material , chemistry , physics , biochemistry , electrical engineering , engineering
Small‐angle neutron scattering is used to investigate porous alumina membranes (γ‐Al 2 O 3 ) made of parallel channels with cylindrical shape. The membranes are produced by anodization of thin aluminium sheets. The scattering experiments are performed in a coaxial geometry where the cylindrical pores are oriented with their long axis parallel to the incident beam resulting in isotropic scattering patterns due to the circular symmetry. The results obtained with commercial Anodisc ® membranes and membranes synthesized in our laboratory are compared to radialy averaged 2D Fourier transforms of electron microscopy images of the alumina membrane surface and to known values of the materials' porosity.