Characteristics of X-ray attenuation in electrospun bismuth oxide/polylactic acid nanofibre mats

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). Resu...

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Bibliographic Details
Published in:	Journal of synchrotron radiation Vol. 20; no. 5; pp. 741 - 748
Main Authors:	Noor Azman, Nurul Z., Siddiqui, Salim A., Haroosh, Hazim J., Albetran, Hani M. M., Johannessen, Bernt, Dong, Yu, Low, It M.
Format:	Journal Article
Language:	English
Published:	5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01-09-2013 John Wiley & Sons, Inc
Subjects:	Attenuation Bismuth - chemistry Electrospinning electrospun micro-Bi2O3/PLA nanofibre mat electrospun nano-Bi2O3/PLA nanofibre mat Lactic Acid - chemistry Mammography Mats micro-Bi2O3/PLA thin films nano-Bi2O3/PLA thin films Nanocomposites Nanofibers Nanomaterials Nanostructure Polyesters Polylactic acid Polymers - chemistry Porosity Radiation Protection - instrumentation Spectrum analysis X-Ray Absorption Spectroscopy X-ray attenuation X-Rays X-ray attenuation electrospun nano-Bi2O3/PLA nanofibre mat electrospun micro-Bi2O3/PLA nanofibre mat micro-Bi2O3/PLA thin films nano-Bi2O3/PLA thin films porosity
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Summary:	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.
Bibliography:	istex:9366C6E403B542C2F940ED32596CE409D22C4420 ark:/67375/WNG-BW4G66SS-S ArticleID:JSYRV5002 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	1600-5775 0909-0495 1600-5775
DOI:	10.1107/S0909049513017871