نتایج جستجو برای: aligned nanofibers

تعداد نتایج: 39929  

2011
Michelle K. Leach Zhang-Qi Feng Samuel J. Tuck Joseph M. Corey

Electrospun nanofiber scaffolds have been shown to accelerate the maturation, improve the growth, and direct the migration of cells in vitro. Electrospinning is a process in which a charged polymer jet is collected on a grounded collector; a rapidly rotating collector results in aligned nanofibers while stationary collectors result in randomly oriented fiber mats. The polymer jet is formed when...

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...

2015
Abdullah M Asiri Hadi M Marwani Sher Bahadar Khan Thomas J Webster

Previous studies have demonstrated greater cardiomyocyte density on carbon nanofibers (CNFs) aligned (compared to randomly oriented) in poly(lactic-co-glycolic acid) (PLGA) composites. Although such studies demonstrated a closer mimicking of anisotropic electrical and mechanical properties for such aligned (compared to randomly oriented) CNFs in PLGA composites, the objective of the present in ...

Journal: :Tissue engineering. Part C, Methods 2013
Yuan Xu Jinglei Wu Haoming Wang Hanqin Li Ning Di Lei Song Sontao Li Dianwei Li Yang Xiang Wei Liu Xiumei Mo Qiang Zhou

Tissue engineering techniques using novel scaffolding materials offer potential alternatives for managing tendon disorders. An ideal tendon tissue engineered scaffold should mimic the three-dimensional (3D) structure of the natural extracellular matrix (ECM) of the native tendon. Here, we propose a novel electrospun nanoyarn network that is morphologically and structurally similar to the ECM of...

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...

2017
Jozafina Haj Tharwat Haj Khalil Mizied Falah Eyal Zussman Samer Srouji

While biologically feasible, bone repair is often inadequate, particularly in cases of large defects. The search for effective bone regeneration strategies has led to the emergence of bone tissue engineering (TE) techniques. When integrating electrospinning techniques, scaffolds featuring randomly oriented or aligned fibers, characteristic of the extracellular matrix (ECM), can be fabricated. I...

2012
Koji Nakane Nobuo Ogata

Electrospinning (ES) is one of the most useful techniques to form nanofibers in a diameter of several hundred nanometers (Doshi & Reneker, 1995, Buchko et al., 1999, Huang et al., 2003). The diameter of the nanofibers produced by ES is at least one or two orders of magnitude smaller than those of conventional fiber production methods like melt or solution spinning. As a result, the electrospun ...

Journal: :nanomedicine journal 0
amir doustgani department of chemical engineering, university of zanjan, zanjan, iranسازمان اصلی تایید شده: دانشگاه زنجان (zanjan university)

objective(s): electrospun nanofibrous mats of poly(lactic acid) (pla) and nanohydroxyapatite (nano-ha) were prepared and proliferation and differentiation of mesenchymal stem cells on the prepared nanofibers were investigated in this study. materials and methods: pla/nano-ha nanofibers were prepared by electrospinning. the effects of process parameters, such as nano-ha concentration, distance, ...

2014
Xiaoming Li Wei Liu Lianwen Sun Katerina E Aifantis Bo Yu Yubo Fan Qingling Feng Fuzhai Cui Fumio Watari

It has been stated clearly that nanofillers could make an enhancement on the mechanical performances of dental composites. In order to address current shortage of traditional dental composites, fillers in forms of nanofibers or nanotubes are broadly regarded as ideal candidates to greatly increase mechanical performances of dental composites with low content of fillers. In this review, the effo...

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