نتایج جستجو برای: elecotrospun nanofibers

تعداد نتایج: 7124  

Journal: :journal of nanostructures 2012
h. a. khorami m. keyanpour-rad a. eghbali m. r. vaezi

this paper reports the synthesis of polypyrrole coated sno2/znoelectrospunnanofibers via vapor phase polymerization method. in order to prepare one dimensional (sno2-zno)/polypyrrole with the core sheath structure, first sno2-zno composite nanofibers were synthesized via electrospinning method followed by adsorption of fe3+ on the surface of the sno2-zno nanofibers and finally pyrrole was polym...

E. Biazar, F. Ghorbani J. Ai S. Heidari K

Tissue engineering is defined as the designing and engineering of structures to rebuild and repair a body damaged tissue. Scaffolding Poly Hydroxy Butyrate Valraty (PHBV) has shown good biocompatibility and biodegradable properties. Nanofibers have improved the performance of biomaterials, and could be considered effective. One of the important methods for designing nanofiber scaffold is the el...

Journal: :Nanoscale 2012
Asli Celebioglu Tamer Uyar

High molecular weight polymers and high polymer concentrations are desirable for the electrospinning of nanofibers since polymer chain entanglements and overlapping are important for uniform fiber formation. Hence, the electrospinning of nanofibers from non-polymeric systems such as cyclodextrins (CDs) is quite a challenge since CDs are cyclic oligosaccharides. Nevertheless, in this study, we h...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Jeffrey D Hartgerink Elia Beniash Samuel I Stupp

Twelve derivatives of peptide-amphiphile molecules, designed to self-assemble into nanofibers, are described. The scope of amino acid selection and alkyl tail modification in the peptide-amphiphile molecules are investigated, yielding nanofibers varying in morphology, surface chemistry, and potential bioactivity. The results demonstrate the chemically versatile nature of this supramolecular sys...

2014
Thomas J. Macdonald Jie Xu Sait Elmas Yatin J. Mange William M. Skinner Haolan Xu Thomas Nann

p-type NiO nanofibers have been synthesized from a simple electrospinning and sintering procedure. For the first time, p-type nanofibers have been electrospun onto a conductive fluorine doped tin oxide (FTO) surface. The properties of the NiO nanofibers have been directly compared to that of bulk NiO nanopowder. We have observed a p-type photocurrent for a NiO photocathode fabricated on an FTO ...

Journal: :Chemical communications 2011
Kun-Jae Lee Hanbok Song Young-In Lee Hyunsung Jung Miluo Zhang Yong-Ho Choa Nosang V Myung

Electrospinning and galvanic displacement reaction are combined to fabricate ultra-long hollow chalcogen and chalcogenide nanofibers in a cost-effective and high throughput manner. This procedure exploits electrospinning to fabricate ultra-long sacrificial nanofibers with controlled dimensions and morphology, thereby imparting control over the composition and shape of the nanostructures evolved...

Journal: :Chemical communications 2006
Partha Pratim Bose Michael G B Drew Apurba K Das Arindam Banerjee

Intertwining triple helical nanofibers with an overall handedness have been formed from self-assembling chiral benzene-1,3,5-tricarboxamides , and , whereas the achiral benzene-1,3,5-tricarboxamide upon self-association gives rise to straight nanofibers without any twist and transmission electron microscopy images of chiral compounds clearly demonstrate that the handedness of the triple helical...

2010
Christina Theisen Susanne Fuchs-Winkelmann Karola Knappstein Turgay Efe Jan Schmitt Juergen RJ Paletta Markus D Schofer

BACKGROUND Rotator cuff tears are a common and frequent lesion especially in older patients. The mechanisms of tendon repair are not fully understood. Common therapy options for tendon repair include mini-open or arthroscopic surgery. The use of growth factors in experimental studies is mentioned in the literature. Nanofiber scaffolds, which provide several criteria for the healing process, mig...

2014
Shumeng Bai Xiuli Zhang Qiang Lu Weiqin Sheng Lijie Liu Boju Dong David L. Kaplan Hesun Zhu

Silkworm silk has been widely used as a textile fiber, as biomaterials and in optically functional materials due to its extraordinary properties. The β-sheet-rich natural nanofiber units of about 10-50 nm in diameter are often considered the origin of these properties, yet it remains unclear how silk self-assembles into these hierarchical structures. A new system composed of β-sheet-rich silk n...

Journal: :Physical chemistry chemical physics : PCCP 2011
Ashleigh Cooper Narayan Bhattarai Forrest M Kievit Michael Rossol Miqin Zhang

We report a simple method to produce stable chitosan derivative nanofibers via electrospinning. A chitosan solution with lactate salt was electrospun to produce nanofibers, followed by thermal treatment to enhance fiber stability. Chemical and morphological analyses demonstrated that the resulting nanofibers were crosslinked via amidation between chitosan and lactate salt. These fibers exhibite...

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