Preparation and photoluminescent characterization of poly(phenylene vinylene)/TiO₂ nanoparticles composite nanofibers by one‐step electrospinning

Abstract

A simple electrospinning progress, directly mixing method, was used to produce ultrafine poly(phenylene vinylene)/TiO 2 (PPV/TiO 2 ) composite nanofibers with diameters ranging from 100 to 300 nm. The effects of different TiO 2 content on diameter, morphology, and structure of composite fibers were analyzed by scanning electron microscopy and transmission electron microscope. The results showed that composite polymer nanofibers with smooth surface were obtained when TiO 2 concentration was below 18 wt %. The surface of the composite nanofibers became rougher with the increase of TiO 2 con-tent. The optical properties of the as-prepared nanofibers were characterized by photoluminescence spectra and photographs, the results showed an increase in intensity of the high-energy shoulder (510 nm) when the concentration of nanoparticles increased. X-ray diffraction measurements showed that the increasing TiO 2 content enhanced the amorphous phase of PPV in composite nanofibers.

Retracted Article: Polycaprolactone composites with TiO2 for potential nanobiomaterials: tunable properties using different phases

“…The fibre diameter distribution in bimodal shape is due to higher polymer concentration and thinning in fibre diameter is due to higher filler concentration. 31 The specific surface area of pure and the composite nanofibers, as measured by the BET method, of PCL, PCL-A and PCL-R are 3.2, 4.9 and 4.5 m 2 g À1 , respectively. PCL-A exhibits higher surface area as compared to pure PCL and PCL-R nanofibers.…”