نتایج جستجو برای: pva bionanocomposites however

تعداد نتایج: 1638890  

Journal: :مهندسی بیوسیستم ایران 0
بابک قنبرزاده دانشیار ، دانشکدۀ کشاورزی دانشگاه تبریز نوشین نوشیروانی دانشجوی کارشناسی ارشد، دانشکدۀ کشاورزی دانشگاه تبریز

the main objectives of this research were the study and comparing the microstructure of pva-stnccand pva-st-mmt by x ray diffraction and atomic force microscopy (afm) and as well as,comparing the effects of two nanoparticle on surface hydrophilicity and moisture absorption. xdiffraction patterns showed that microstructure of the pva-st-mmt films was exfoliated andpva-st-ncc was closer to interc...

2014
Susan Azizi Mansor Bin Ahmad Mohd Zobir Hussein Nor Azowa Ibrahim Farideh Namvar

A series of novel bionanocomposites were cast using different contents of zinc oxide-silver nanoparticles (ZnO-AgNPs) stabilized by cellulose nanocrystals (CNC) as multifunctional nanosized fillers in poly(vinyl alcohol)/chitosan (PVA/Cs) matrices. The morphological structure, mechanical properties, ultraviolet-visible absorption, and antimicrobial properties of the prepared films were investig...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

Journal: :Polymers 2023

This study aimed to synthesize chitosan/polyvinyl alcohol (CS/PVA)-based zinc oxide (ZnO) and titanium dioxide (TiO2) hybrid bionanocomposites (BNCs) observe their comparative accomplishment against the skin cancer cell line, A431, antioxidant potential. CS was blended with PVA form polymeric films reinforced immobilization of ZnO TiO2 nanoparticles (NPs), separately. The optimization BNCs done...

Journal: :Food and Bioprocess Technology 2022

Abstract In this study, bionanocomposite coating solutions were created using polyvinyl alcohol (PVA) and chitosan (Cs), with different concentrations of cinnamon essential oil in nanoemulsion (n-CEO; 0%, 5%, 10%, 20%) TiO 2 nanoparticles (TiO -NPs). The was characterized Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy EDX, mechanical barrier property as...

Biological control agents are useful components in the enhancement of plant disease resistance and improvement of soil properties. Effect of biological control agents (BCAs) as a disease control method in plants is hampered by their vulnerability to environmental and edaphic conditions. This study entailed the use of chitosan-silica nanocomposites for delivery of BCAs. Effect of BCAs-nanocompos...

2017
Abida Kalsoom Khan Ain Us Saba Shamyla Nawazish Fahad Akhtar Rehana Rashid Sadullah Mir Bushra Nasir Furqan Iqbal Samina Afzal Fahad Pervaiz Ghulam Murtaza

Over the past few years, considerable attention has been focused on carrageenan based bionanocomposites due to their multifaceted properties like biodegradability, biocompatibility, and nontoxicity. Moreover, these composites can be tailored according to the desired purpose by using different nanofillers. The role of ferromagnetic nanoparticles in drug delivery is also discussed here in detail....

Journal: :Journal of hazardous materials 2012
R Celis M A Adelino M C Hermosín J Cornejo

Montmorillonite (SWy-2)-chitosan bionanocomposites (SW-CH) were prepared following different methodologies, characterized, and assayed as adsorbents of the herbicide clopyralid (3,6-dichloropyridine-2-carboxylic acid) in aqueous solution and soil/water suspensions, to assess the potential of the materials to prevent and remediate soil and water contamination by anionic pesticides. The SW-CH bio...

Journal: :The Iowa Review 1999

Journal: :Genetics and molecular research : GMR 2007
A A F B V José M A S Gama A Urban G K Merighe F V Meirelles M A L Etchegaray D P D Lanna

Cultures of adipose tissue explants are a valuable tool for studying the intracellular mechanisms involving hormones and nutrients. However, testing how fatty acids affect cells requires a carrier molecule; bovine serum albumin (BSA) has been used for this purpose. However, contaminants can alter the cellular response. Our objectives were to: 1) test BSA as a fatty acid carrier and 2) evaluate ...

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