Nano-Micro Letters

Synthesis and electrical properties of TiO2 nanoparticles embedded in polyamide-6 nanofibers via electrospinning

R. Nirmala1Jin Won Jeong2,3R. Navamathavan4Hak Yong Kim2,3,*

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Nano-Micro Letters, , Volume 3, Issue 1, pp 56-61
Publication Date (Web): May 13, 2011 (Article)




Figure 1 XRD pattern of the TiO2 nanoparticles.

We report on the synthesis and characterizations of TiO2 nanoparticles embedded in polyamide-6 composite nanofibers by using electrospinning technique. The influence of substrate on the electrical characteristics of polyamide-6/TiO2composite nanofibers was investigated. The resultant nanofibers were exhibited good incorporation of TiO2 nanoparticles. The doping of TiO2 nanoparticles into the polyamide-6 nanofibers were confirmed by high resolution transmission electron microscopy and energy dispersive X-ray spectroscopy. Photoluminescence (PL) and cathodoluminescence (CL) spectroscopy were also used to characterize the samples. The PL and CL spectrum revealed that the as-spun polyamide-6/TiO2 composite nanofibers consisted of overlapping of two broad emission bands due to the contribution of polyamide-6 (centered at about 475 nm), which might originate from organic functional groups of polyamide-6 and TiO2 nanoparticles (centered around 550 nm). The electrical conductivity of the polyamide-6/TiO2 composite nanofibers on different substrates was carried out. It was found that the electrical conductivity of the polyamide-6/TiO2 composite nanofibers on silicon substrate was in the range of 1~3 µA, and about 1 to 20 pA for the paper and glass substrates.



Electrospinning; Polyamide-6; Nanoparticles; Nanofibers; Electrical studies


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