| Literature DB >> 23955038 |
Nurul Z Noor Azman1, Salim A Siddiqui, Hazim J Haroosh, Hani M M Albetran, Bernt Johannessen, Yu Dong, It M Low.
Abstract
The characteristics of the X-ray attenuation in electrospun nano(n)- and micro(m)-Bi2O3/polylactic acid (PLA) nanofibre mats with different Bi2O3 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-Bi2O3/PLA nanofibre mats is distinctly higher than that of m-Bi2O3/PLA nanofibre mats at all energies investigated. In addition, with increasing filler loading (n-Bi2O3 or m-Bi2O3), the porosity of the nanofibre mats decreased, thus increasing the X-ray attenuation, except for the sample containing 38 wt% Bi2O3 (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.Entities:
Keywords: X-ray attenuation; electrospun micro-Bi2O3/PLA nanofibre mat; electrospun nano-Bi2O3/PLA nanofibre mat; micro-Bi2O3/PLA thin films; nano-Bi2O3/PLA thin films; porosity
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Year: 2013 PMID： 23955038 DOI： 10.1107/S0909049513017871
Source DB: PubMed Journal: J Synchrotron Radiat ISSN： 0909-0495 Impact factor: 2.616