The effect of UV irradiation on the electrospun PCL/TiO sub(2) composites fibers

The effect of UV irradiation and micro- and nano-TiO sub(2) as well as titanate nanotubes (TiNT) on the phase morphology and thermal properties of the electrospun PCL composite fibers was investigated. Polycaprolactone (PCL)/TiO sub(2) (micro- and nano-TiO sub(2) as well as titanate nanotubes) compo...

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Bibliographic Details
Published in:Journal of applied polymer science 2016-06, Vol.133 (24), p.np-np
Main Authors: Bajsic, Emi Govorcin, Mijovic, Budimir, Penava, Nina Vranjes, Grguric, Tamara Holjevac, Slouf, Miroslav, Zdraveva, Emilija
Format: Article
Language:English
Subjects:
Degradation
Electrospinning
Fibers
Irradiation
Nanostructure
Nanotubes
Titanates
Titanium dioxide
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Summary:The effect of UV irradiation and micro- and nano-TiO sub(2) as well as titanate nanotubes (TiNT) on the phase morphology and thermal properties of the electrospun PCL composite fibers was investigated. Polycaprolactone (PCL)/TiO sub(2) (micro- and nano-TiO sub(2) as well as titanate nanotubes) composite fibers were prepared by electrospinning a polymer solution. The PCL and PCL/TiO sub(2) composite fibers were exposed to UV light at irradiation times of 5 and 10 days. After UV irradiation the crystallinity of the electrospun PCL/TiNTcomposite fibers increased because of the large specific surface area of TiNT. The thermal stability of the PCL/TiNT electrospun composite fibers increased due to the formation of crosslinking structure after UV irradiation. The SEM analysis suggests that after UV radiation the fibers showed high degree of degradation due to the high number of fibers breakages and fibers surface voids. The results of FTIR spectroscopy confirmed that the TiO sub(2) particles enhance the degradation process because of their photocatalytic activity. J. Appl. Polym. Sci. 2016, 133, 43539.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.43539