نتایج جستجو برای: fe3o4sio2tio2 nanocomposite

تعداد نتایج: 13699  

2011
Chi-Wei Lo Difeng Zhu Hongrui Jiang

We demonstrate a new light-responsive poly(N-isopropylacrylamide) (PNIPAAm) hydrogel nanocomposite incorporating glycidyl methacrylate functionalized graphene oxide (GO–GMA) instead of metallic nanoparticle fillers. GO–GMA is synthesized by esterification with glycidyl methacrylate. GO–GMA incorporated hydrogels are synthesized by photopolymerization of NIPAAm including 4-dimethylaminopyridine ...

Journal: :international journal of nano dimension 0
s. khanahmadzadeh department of chemistry, mahabad branch, islamic azad university, mahabad, iran. f. barikan department of chemistry, mahabad branch, islamic azad university, mahabad, iran.

polyimide/nickel oxide (polyimide/nio) nanocomposite was successfully synthesized by sol gel technique, using pyromellitic dianhydriede (pmda), 4,4-oxydianiline (oda) and n,n-dimethylacetamide (dmac) and 10 wt% nickel titanate nanopowders (nps). fourier transform infrared spectrometry (ftir), x-ray diffraction (xrd), scanning electron microscopy (sem), and vibrating sample magnetometer (vsm) we...

Journal: :international journal of nanoscience and nanotechnology 2010
d. zaarei a. a. sarabi* f. sharif s. m. kassiriha m. moazzami gudarzi

polymer-clay nanocomposite coatings have attracted much attention because of impressive enhancements of coating properties. in this research, both commercially available and isophoronediamine-modified montmorillonite clays were used to obtain epoxy-clay nanocomposite coatings. these nanocomposite materials with different clay loadings in the form of coatings were applied to cold-rolled steel (c...

Journal: :international journal of nano dimension 0
sh. aghabeygi department of chemistry, islamic azad university, east tehran branch, qiamdasht, tehran, iran. m. zare-dehnavi department of chemistry, islamic azad university, east tehran branch, qiamdasht, tehran, iran.

nanocomposite of zro2/zno was prepared under ultrasonic irradiation by sol gel process from directly mixing zirconium and zinc gels. the mixture was placed under ultrasonic irradiation for 2 hours. after the aging time and filtration of the reaction mixture, the filtrated composite gel was calcinated at 500 °c for 3h in furnace. the precursor gels of zirconium and zinc were prepared from dissol...

Journal: :iranian journal of hydrogen & fuel cell 2014
mehran javanbakht khadijeh hooshyari morteza enhessari hossein beydaghi

proton exchange membrane fuel cells (pemfcs) are electrochemical devices that show the highest power densities compared to the other type of fuel cell. in this work, nanocomposite membranes used for proton exchange membrane fuel cells as poly(vinyl alcohol)/la2ce2o7 (pva-lc) with the aim of increasing the water uptake and proton conductivity. glutaraldehyde (ga) was used as cross linking agent ...

Journal: :physical chemistry research 0
asma karamipour payame noor university nahid rasouli payame noor university maryam movahedi payame noor university hossein salavti payame noor university

in this work, magnetically separable zno-znfe2o4-ppy nanocomposite as an efficient adsorbent was synthesized by two steps. at first, zinc oxide (zno) and znfe2o4 nanoparticles were synthesized using simple and facile precipitation method. then, zno-znfe2o4 mixed oxide was modified by polypyrrole (ppy). the adsorbent was characterized by x-ray diffraction (xrd), fourier transform infrared (ft-ir...

Journal: :IJMTIE 2011
Alessandro Massaro Fabrizio Spano Diego Caratelli Alexander G. Yarovoy Roberto Cingolani Athanassia Athanassiou

In this paper, the authors define new classes of devices based on nanocomposite materials (NMs). The work introduces approaches about the design and the experimental characterization of these materials. A wide range of applications is presented by discussing novel devices implemented by nanocomposite techniques including sensing and robotic in micro/nano scale. The approaches are oriented on th...

Journal: :The Journal of chemical physics 2014
Rebeca Hernández Aurora Nogales Michael Sprung Carmen Mijangos Tiberio A Ezquerra

We report on a novel slow dynamics of polymer xerogels, aerogels, and nanocomposite aerogels with iron oxide nanoparticles, as revealed by X-ray photon correlation spectroscopy. The polymer aerogel and its nanocomposite aerogels, which are porous in nature, exhibit hyper-diffusive dynamics at room temperature. In contrast, non-porous polymer xerogels exhibit an absence of this peculiar dynamics...

2003
S. T. Aruna K. S. Rajam

Nanocrystalline partially stabilised zirconia (PSZ) and yttria-fully stabilised zirconia (YSZ) powders were prepared by solution combustion process. Nanocrystalline nature of the powders was confirmed by XRD and TEM. Nanocomposite Ni/PSZ and Ni/YSZ films were electrodeposited from a suspension of nanoparticles in nickel sulfamate solution. The strengthening of the nanocomposite due to nanoparti...

2012
Jun Araki Yuta Yamanaka Kousaku Ohkawa

Nanocomposite gels containing chitosan as a network polymer and chitin nanowhiskers as reinforcing fillers were prepared by cross-linking with the blocked isocyanate hexamethylene-1,6-di-(aminocarboxysulfonate) (HDS). Young’s modulus and stress at break of the nanocomposite gels increased to maximum values of 169 and 135 kPa, respectively, with increase in whisker content up to 13.3%, whereas t...

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