摘要
We report on the synthesis and characterizations of TiO2 nanoparticles embedded in polyamide-6composite nanofibers by using electrospinning technique. The influence of substrate on the electrical characteristics of polyamide-6/TiO2 composite nanofibers was investigated. The resultant nanofibers exhibit 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 spectra reveal 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 13 μA, and about 1 to 20 p A for the paper and glass substrates.
We report on the synthesis and characterizations of TiO_2 nanoparticles embedded in polyamide-6composite nanofibers by using electrospinning technique. The influence of substrate on the electrical characteristics of polyamide-6/TiO_2 composite nanofibers was investigated. The resultant nanofibers exhibit good incorporation of TiO_2 nanoparticles. The doping of TiO_2 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 spectra reveal that the as-spun polyamide-6/TiO_2 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 TiO_2 nanoparticles(centered around 550 nm). The electrical conductivity of the polyamide-6/TiO_2 composite nanofibers on different substrates was carried out.It was found that the electrical conductivity of the polyamide-6/TiO_2 composite nanofibers on silicon substrate was in the range of 1~3 μA, and about 1 to 20 p A for the paper and glass substrates.
基金
supported by a grant from the Korean Ministry of Education,Science and Technology(The Regional Core Research Program/Center for Healthcare Technology&Development,Chonbuk National University,Jeonju 561-756 Republic of Korea)
