Open AccessCharacteristics of X‐ray attenuation in electrospun bismuth oxide/polylactic acid nanofibre mats
Author(s) -
Noor Azman Nurul Z.,
Siddiqui Salim A.,
Haroosh Hazim J.,
Albetran Hani M. M.,
Johannessen Bernt,
Dong Yu,
Low It M.
Publication year - 2013
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049513017871
Subject(s) - attenuation , polylactic acid , materials science , porosity , composite material , bismuth , x ray absorption spectroscopy , absorption (acoustics) , analytical chemistry (journal) , absorption spectroscopy , optics , chemistry , metallurgy , polymer , physics , chromatography
The characteristics of the X‐ray attenuation in electrospun nano(n)‐ and micro(m)‐Bi 2 O 3 /polylactic acid (PLA) nanofibre mats with different Bi 2 O 3 loadings were compared as a function of energy using mammography ( i.e. tube voltages of 22–49 kV) and X‐ray absorption spectroscopy (XAS) (7–20 keV). Results indicate that X‐ray attenuation by electrospun n‐Bi 2 O 3 /PLA nanofibre mats is distinctly higher than that of m‐Bi 2 O 3 /PLA nanofibre mats at all energies investigated. In addition, with increasing filler loading (n‐Bi 2 O 3 or m‐Bi 2 O 3 ), the porosity of the nanofibre mats decreased, thus increasing the X‐ray attenuation, except for the sample containing 38 wt% Bi 2 O 3 (the highest loading in the present study). The latter showed higher porosity, with some beads formed, thus resulting in a sudden decrease in the X‐ray attenuation.