نتایج جستجو برای: uniaxial nanofibers

تعداد نتایج: 15313  

2016
Qi-Wei Fu Yun-Peng Zi Wei Xu Rong Zhou Zhu-Yun Cai Wei-Jie Zheng Feng Chen Qi-Rong Qian

Calcium phosphate-based biomaterials have been well studied in biomedical fields due to their outstanding chemical and biological properties which are similar to the inorganic constituents in bone tissue. In this study, amorphous calcium phosphate (ACP) nanoparticles were prepared by a precipitation method, and used for preparation of ACP-poly(d,l-lactic acid) (ACP-PLA) nanofibers and water-sol...

2018
Junhua Wei Yuefan Yang Liping Yee Junhua Kong Yuefan Wei Liping Yang Wu Aik Yee Yuliang Dong Rui Zhou Siew Yee Wong Lin Ke Xiao Wei Sun Hejun Du Xu Li Xuehong Lu

Highly porous three-dimensional (3D) hierarchical nanostructures suspended in aqueous media were facilely prepared via electrospinning of polyacrylonitrile (PAN)/indium tin oxide (ITO) nanofibers and collection of the hybrid nanofibers by water, followed by hydrothermally growing ZnO nanorods from the nanofibers. The large inter-fiber distances facilitated the uniform growth of the ZnO nanorods...

Journal: :IJCCE 2016
Shima Maghsoodlou Sulmaz Poreskandar

Nowadays, electrospinning has emerged as a widespread technology to produce nanofibers and best candidates for many significant applications. The most important challenge is to attain uniform nanofibers. In these cases, controlling the production of electrospun nanofiber becomes important. However, Analysis dynamics of jet formation and its instability is difficult during the process. For makin...

Journal: :nanomedicine journal 0
raheleh faridi-majidi nanotechnology and advanced materials department, materials and energy research center, karaj, alborz, iran nader nezafati nanotechnology and advanced materials department, materials and energy research center, karaj, alborz, iran mohammad pazouki nanotechnology and advanced materials department, materials and energy research center, karaj, alborz, iran saeed hesaraki nanotechnology and advanced materials department, materials and energy research center, karaj, alborz, iran

objective(s): three-dimensional structures such as nanofibrous scaffolds are being used in biomedical engineering as well as provide a site for cells to attach and proliferate leading to tissue formation. in the present study, poly(vinyl pyrrolidone) (pvp)/ poly(vinyl alcohol)(pva) hybrid nanofibrous scaffold was synthesized by electrospinning. materials and methods: the effect of adding nano h...

Journal: :ACS applied materials & interfaces 2014
Yuliang Dong Junhua Kong Si Lei Phua Chenyang Zhao Noreen L Thomas Xuehong Lu

In this article, liquid moisture transport behaviors of dual-layer electrospun nanofibrous mats are reported for the first time. The dual-layer mats consist of a thick layer of hydrophilic polyacrylonitrile (PAN) nanofibers with a thin layer of hydrophobic polystyrene (PS) nanofibers with and without interpenetrating nanopores, respectively. The mats are coated with polydopamine (PDOPA) to diff...

Gum Tragacanth (GT) obtained from Astragalus Gossypinus is one of the most widely used natural gums which has found applications in many areas because of its attractive features such as biodegradability, nontoxic nature, natural availability, moisture absorption and creating a network of Hydrocolloid. It also has maintenance and delivery of drugs, higher resistance to microbial attacks and long...

Journal: :Nanoscale 2011
Peng Zhang Changlu Shao Zhenyi Zhang Mingyi Zhang Jingbo Mu Zengcai Guo Yichun Liu

Carbon nanofibers/silver nanoparticles (CNFs/AgNPs) composite nanofibers were fabricated by two steps consisting of the preparation of the CNFs by electrospinning and the hydrothermal growth of the AgNPs on the CNFs. The as-prepared nanofibers were characterized by scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, X-ray diffraction, resonant Raman s...

2017
Idelma A A Terra Luiza A Mercante Rafaela S Andre Daniel S Correa

The accumulation of heavy metals in the human body and/or in the environment can be highly deleterious for mankind, and currently, considerable efforts have been made to develop reliable and sensitive techniques for their detection. Among the detection methods, chemical sensors appear as a promising technology, with emphasis on systems employing optically active nanofibers. Such nanofibers can ...

2013
Velayudham Navaneetha Krishnan Atmakuru Ramesh

Cellulose nanofibers were isolated from coconut coir fibers by chemical treatment using alkaline, mineral acids and inorganic salts, followed by mechanical treatment and disintegration methods like sonication, cryo crushing and dissolution. The size and morphology of cellulose nanofibers were investigated by using the Field Emission Scanning Electron Microscope (FESEM). The width of synthesized...

2016
Navaporn Kaerkitcha Surawut Chuangchote Takashi Sagawa

Hollow carbon nanofibers (HCNFs) were prepared by electrospinning method with several coaxial nozzles, in which the level of the inner nozzle-end is adjustable. Core/shell nanofibers were prepared from poly(methyl methacrylate) (PMMA) as a pyrolytic core and polyacrylonitrile (PAN) as a carbon shell with three types of normal (viz. inner and outer nozzle-ends are balanced in the same level), in...

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