نتایج جستجو برای: polypyrrole nanofibers

تعداد نتایج: 9169  

2011
Shinsuke Ifuku Ryoki Nomura Minoru Morimoto Hiroyuki Saimoto

Chitin nanofibers were isolated from the cell walls of five different types of mushrooms by the removal of glucans, minerals, and proteins, followed by a simple grinding treatment under acidic conditions. The Chitin nanofibers thus obtained have a uniform structure and a long fiber length. The width of the nanofibers depended on the type of mushrooms and varied in the range 20 to 28 nm. The Chi...

2011
Kyu-Oh Kim Yaeko Akada Wei Kai Byoung-Suhk Kim Ick-Soo Kim

In this work, we report the fabrication and cell affinity studies of the poly (vinyl alcohol) (PVA)/hyaluronic acid (HA) cross-linked nanofibers via electrospinning and post cross-linking. FT-IR and TGA analysis demonstrate that HA is not influenced by acid environment such as HCl vapor during cross-linking, and well incorporated into PVA nanofibers. Swelling behavior and cell adhesion of the P...

Journal: :Chemical communications 2007
Yan-Song Zheng Ao Ji Xian-Jie Chen Jin-Lan Zhou

Chiral para-tert-butylcalix[4]arene bearing (S)-alpha-methylbenzylamine groups at lower rim only self-assembles with one of two enantiomers of 2,3-dibenzoyltartaric acid into coiled nanofibers and the coiled nanofibers only stack with the nanofibers having the same handedness to construct bigger ribbon-like fibers bearing porosity.

Journal: :Science 2004
Gabriel A Silva Catherine Czeisler Krista L Niece Elia Beniash Daniel A Harrington John A Kessler Samuel I Stupp

Neural progenitor cells were encapsulated in vitro within a three-dimensional network of nanofibers formed by self-assembly of peptide amphiphile molecules. The self-assembly is triggered by mixing cell suspensions in media with dilute aqueous solutions of the molecules, and cells survive the growth of the nanofibers around them. These nanofibers were designed to present to cells the neurite-pr...

Journal: :Bio-medical materials and engineering 2014
Sugandha Chahal Shahitha Jahir Hussain Fathima Mashitah Binti Mohd Yusoff

In this study, randomly oriented hydroxyethyl cellulose/polyvinyl alcohol (HEC/PVA) nanofibers were fabricated by electrospinning. The blend solutions of HEC/PVA with different weight ratio of HEC to PVA were prepared using water as solvent to fabricate nanofibers. These nanofibrous scaffolds were coated with bone-like apatite by immersing into 10x simulated body fluid (SBF) for different time ...

Journal: :Nanoscale 2010
Mengmeng Li Dayong Yang Yunze Long Hongwei Ma

Epoxy in electrospun nanofibers acting as adhesive generates junctions between nanofibers and thus forms stable three-dimensional networks.

2017
Aya Hamed Nader Shehata Mohamed Elosairy

Electrospinning is an important, widely used process to generate nanofibers. However, there is still an open window for different designs of both spinneret and collector electrodes to be investigated. This paper introduces the impact of new design of conical spinneret electrode on the generated electrospun nanofibers. In this work, the conical feeder is used to generate electrospun Poly(vinyl a...

Journal: :Nanoscale 2016
Q Shi J Hou C Zhao Z Xin J Jin C Li S-C Wong J Yin

A smart core-sheath nanofiber for non-adherent cell capture and release is demonstrated. The nanofibers are fabricated by single-spinneret electrospinning of poly(N-isopropylacrylamide) (PNIPAAm), polycaprolactone (PCL) and nattokinase (NK) solution blends. The self-assembly of PNIPAAm and PCL blends during the electrospinning generates the core-sheath PCL/PNIPAAm nanofibers with PNIPAAm as the...

Journal: :ACS nano 2012
Po-Chun Hsu Hui Wu Thomas J Carney Matthew T McDowell Yuan Yang Erik C Garnett Michael Li Liangbing Hu Yi Cui

Copper nanofiber networks, which possess the advantages of low cost, moderate flexibility, small sheet resistance, and high transmittance, are one of the most promising candidates to replace indium tin oxide films as the premier transparent electrode. However, the chemical activity of copper nanofibers causes a substantial increase in the sheet resistance after thermal oxidation or chemical cor...

2014
Jeon-Hee Kim Seung-Joon Yoo Dong-Heui Kwak Heung-Joe Jung Tae-Young Kim Kyung-Hee Park Jae-Wook Lee

Alumina nanofibers were prepared by a technique that combined the sol-gel and electrospinning methods. The solution to be electrospun was prepared by mixing aluminum isopropoxide (AIP) in ethanol, which was then refluxed in the presence of an acid catalyst and polyvinylpyrolidone (PVP) in ethanol. The characterization results showed that alumina nanofibers with diameters in the range of 102 to ...

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