نتایج جستجو برای: nanofibers

تعداد نتایج: 7124  

Journal: :journal of nanostructures 2012
b. naderizadeh a. moghimi m. shahi

electrospinning was applied to nitrocellulose (nc) solutions  in dmf, dmso  and  ethyl  methyl  keton  to  obtain  nc  nanofibers. electrospraying  process  was  observed  when  dmf  was  used  as solvent.  in  comparison  to nc/dmf, nc/dmso  solution  resulted  in the  formation  of  a  coating  film  as  indicate  by  sem.  two  different electrospun  nanofibers,  smooth  nanofibers  with  90...

Journal: :nanomedicine journal 0
esmaeil mirzaei department of medical nanotechnology, school of advanced medical technologies, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) reza faridi-majidi department of medical nanotechnology, school of advanced medical technologies, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mohammad ali shokrgozar national cell bank of iran, pasteur institute of iran, tehran, iranسازمان اصلی تایید شده: انستیتو پاستور ایران (pasteur institute of iran) farnoush asghari paskiabi department of medical nanotechnology, school of advanced medical technologies, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

objective(s): to improve water stability of electrospun chitosan/ polyethylene oxide (peo) nanofibers, genipin, a biocompatible and nontoxic agent, was used to crosslink chitosan based nanofibers.  materials and methods: different amounts of genipin were added to the chitosan/peo solutions, chitosan/peo weight ratio 90/10 in 80 % acetic acid, and the solutions were then electrospun to form nano...

Journal: :Journal of hazardous materials 2013
Fatma Kayaci Zeynep Aytac Tamer Uyar

Surface modified electrospun polyester (PET) nanofibers with cyclodextrin polymer (CDP) were produced (PET/CDP). CDP formation onto electrospun PET nanofibers was achieved by polymerization between citric acid (CTR, crosslinking agent) and cyclodextrin (CD). Three different types of native CD (α-CD, β-CD and γ-CD) were used to form CDP. Water-insoluble crosslinked CDP coating was permanently ad...

Journal: :Bio-medical materials and engineering 2014
Long Chen Jian Kang Sachiko Sukigara

Superfine Particles (SP) of soluble eggshell membrane and medical grade polyurethane (MPU) blend nanofibers were prepared by electrospinning different blend ratios of SP/MPU suspensions for regeneration of the natural fiber-like structure of the eggshell membrane. The addition of SP had no obvious effect on the electrospinning process of MPU nanofibers, and the SP were randomly dispersed in the...

2012
Qingqing Wang Xianjun Dong Zengyuan Pang Yuanzhi Du Xin Xia Qufu Wei Fenglin Huang

Titanium dioxide-polyaniline/polyamide 6 (TiO(2)-PANI/PA6) composite nanofibers were prepared by in situ polymerization of aniline in the presence of PA6 nanofibers and a sputtering-deposition process with a high purity titanium sputtering target. TiO(2)-PANI/PA6 composite nanofibers and PANI/PA6 composite nanofibers were fabricated for ammonia gas sensing. The ammonia sensing behaviors of the ...

2016
Hanwen Sun Yancong Zhang Linbo Dou Xinfeng Song Xiangling Gu Chunhua Fu

This review describes the recent developments in natural and synthetic nanofibers to support human stem cell (hSC) propagation and differentiation. Nanofibers are promising substrates for regenerative medicine because of their morphologies that structurally mimic the in vivo microenvironment, that is, the extracellular matrix (ECM). Cellular behavior, including attachment, proliferation, and di...

2008
Jin Cheng Xiaoping Zou Hongdan Zhang Fei Li Pengfei Ren Guang Zhu Yi Su Maofa Wang

Y-shaped carbon nanofibers as a multi-branched carbon nanostructure have potential applications in electronic devices. In this article, we report that several types of Y-shaped carbon nanofibers are obtained from ethanol flames. These Y-shaped carbon nanofibers have different morphologies. According to our experimental results, the growth mechanism of Y-shaped carbon nanofibers has been discuss...

2016
Lanling Chu Siwei Deng Renshan Zhao Jianjun Deng Xuejun Kang

The objective of this study was to compare the adsorption/desorption of target compounds on homemade electrospun nanofibers, polystyrene (PS) nanofibers, acrylic resin (AR) nanofibers and PS-AR composite nanofibers with Tenax TA. Ten volatile organic compounds (VOCs) were analyzed by preconcentration onto different sorbents followed by desorption (thermal and solvent orderly) and analysis by ca...

Journal: :Carbohydrate polymers 2012
Fatma Kayaci Tamer Uyar

Zein nanofibers containing cyclodextrins (zein/CD) were produced via electrospinning. Three types of CDs (α-CD, β-CD and γ-CD) having 10%, 25% and 50% (w/w) were individually incorporated into zein nanofibers. SEM imaging elucidated that the morphologies of the electrospun zein/CD nanofibers depended on the CD type and weight percentage. The incorporation of CDs in zein improved the electrospin...

2014
Fatma Kayaci Tamer Uyar

Polyester (PET) nanofibers incorporating cyclodextrins (CD) were obtained via electrospinning. a-CD, b-CD, and c-CD were used to functionalize PET nanofibers. Beadfree PET/CD nanofibers were obtained from lower polymer concentration indicating that the incorporation of CD in polymer solution improved the electrospinnability of the PET nanofibers. XRD studies indicated that CD were distributed i...

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