نتایج جستجو برای: tio2fe3o4 and tio2fe2o3 nanocomposites

تعداد نتایج: 16831187  

Journal: :advances in environmental technology 0
amin ahmadpour wastewater

environmental contamination, which is growing around the world, is a serious problem can not to be neglected. among all contaminations, water pollution is a major problem. azo dyes are one of the largest groups of pollutants found in the drinking water, coming from, and the food and textile industries. tio2/fe3o4 and tio2/fe2o3 nanocomposites with various ratios were synthesized by an ultrasoni...

ژورنال: طب کار 2017
برخورداری, ابوالفضل, جبالی, علی, حکمتی مقدم, سید حسین, نجیمی, محمدرضا, کوهنورد, بهرام,

Introduction: The aim of the present study was preparing polymeric materials and nanocomposites based on nanoparticles of zinc oxide in normal cases the coated with gelatin and comparing them in terms of sound transmission loss in different frequencies.  Method: This study was an experimental one. The materials used in the current study were included zinc oxide nanoparticles, polymer po...

2016
Jaya Shanthi

Poly (o-Phenylenediamine) and its ZnO nanocomposites were synthesized at different concentrations metal oxide like 5%, 10% and 15% of ZnO by via chemical oxidative polymerization method using ammonium persulphate as an oxidant in the presence of HCl. The prepared polymer and its polymer nanocomposites are found to be soluble in common organic solvents like ethanol, DMSO, toluene etc. The format...

The aim of this work is to probe the influence of nanoclay and turmeric spends content on microcrystalline of vinyl ester hybrid nanocomposites. A series of vinyl ester hybrid nanocomposites have been fabricated with varying amounts of TS viz., 0, 2.5, 5, 7.5 and 10 % w/w along with 2% nanoclay. The microcrystalline parameters such as crystallite size and lattice strain of vinyl ester hybrid na...

Nanocomposites films of (polymer blend-ceramics) were prepared from (PVA-PAA) blend and (PVA-PAA) blend doped with niobium carbide nanoparticles for humidity sensors have low cost, easy fabrication, high sensitivity, lightweight and high corrosion resistance. The structural, electrical and optical properties of (PVA-PAA-NbC) nanocomposites have been studied. The D.C electrical properties of (PV...

Journal: :جنگل و فرآورده های چوب 0
مهدی روحانی استادیار علوم و صنایع چوب و کاغذ، گروه سلولزی و بسته بندی، پژوهشکدۀ شیمی و پتروشیمی، پژوهشگاه استاندارد، کرج، ایران بهزاد کرد استادیار علوم و صنایع چوب و کاغذ، گروه سلولزی و بسته بندی، پژوهشکدۀ شیمی و پتروشیمی، پژوهشگاه استاندارد، کرج، ایران نازنین مطیع دانشجوی دکتری علوم و صنایع چوب و کاغذ، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران فرحناز بهزادی کارشناس ارشد علوم و صنایع چوب و کاغذ، گروه سلولزی و بسته بندی، پژوهشکدۀ شیمی و پتروشیمی، پژوهشگاه استاندارد، کرج، ایران

the aim of this study was to investigate the barrier properties of cellulose nanocrystals-pvananocomposites. nanocomposite films with different filler loading levels (3, 6, 9 and 12% by wt) weredeveloped by solvent casting method. the effect of cellulose nanocrystals on the barrier properties ofthe nanocomposites was studied. to this end, moisture absorption, water vapor permeability (wvp),oxyg...

2015
Sini Kuriakose D K Avasthi Satyabrata Mohapatra

ZnO-CuO nanocomposite thin films were prepared by carbothermal evaporation of ZnO and Cu, combined with annealing. The effects of 90 MeV Ni(7+) ion irradiation on the structural and optical properties of ZnO-CuO nanocomposites were studied by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-visible absorption spectroscopy and Raman spectroscopy. XRD studies...

Journal: Polyolefins Journal 2018

This study presents methods for treating a kind of nanoclay and investigates the effects of methylaluminoxane (MAO) exposure time and or dodecylamine (DDA) reflux time on in-situ polymerization of ethylene in the presence of nanoclay and examines the morphology and properties of the prepared polyethylene/clay nanocomposites. The results revealed that by increasing MAO exposure time productivity...

2013
Silvano Rodrigo Valandro Patrícia Coelho Lombardo Alessandra Lima Poli Marco Antonio Horn Miguel Guillermo Neumann Carla Cristina Schmitt

The organoclay/poly(methyl methacrylate) (PMMA) nanocomposites were prepared by in situ photopolymerization method using two solvents, ethanol and acetonitrile. The influences of organoclay loading, solvent nature and length of attached surfactant (C8 or C16) on thermal and mechanical properties were studied by thermogravimetric analysis and dynamic mechanical analysis. Alkylammonium surfactant...

Journal: :international journal of nano dimension 0
s. sedaghat department of chemistry, malard branch, islamic azad university, malard , iran.

silver-polyaniline (ag-pani) nanocomposites were prepared by in-situ oxidative polymerization of aniline monomer in sodium bis(2-ethylhexyl) sulfosuccinate (aot) solution as an emulsifier. the synthesis of silver-polyaniline nanocomposites was investigated as a function of several parameters such as aniline concentration, concentration of emulsifier (aot), concentration of oxidation agent and c...

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