نتایج جستجو برای: poly vinyl pyrrolidone

تعداد نتایج: 88717  

2012
Mandeep Singh Manish Kumar František Štěpánek Pavel Ulbrich Pavel Svoboda

We have synthesized nickel nanoparticles using nickel chloride as a precursor in ethanol using PVP (Poly Vinyl Pyrrolidone) as a surfactant and hydrazine hydrate as reducing agent at 60 °C in a facile manner. The structural analysis showed that particles are face-centered cubic and monodisperse within the PVP matrix with average size about 3 nm. The magnetic analysis shows the superparamagnetis...

Journal: :Pharmaceutics 2021

Poly(N-vinyl pyrrolidone) (PVP), poly(2-methyl-2-oxazoline) (PMOZ), poly(2-ethyl-2-oxazoline) (PEOZ), poly(2-n-propyl-2-oxazoline) (PnPOZ), and poly(2-isopropyl-2-oxazoline) (PiPOZ) were used to prepare solid dispersions with ibuprofen (IB), a model poorly-water soluble drug. Dispersions, prepared by solvent evaporation, investigated using powder X-ray diffractometry, differential scanning calo...

2015
Xin He Hang Zhang Wei Lin Rongfei Wei Jianrong Qiu Mei Zhang Bin Hu

High-yielded Bi2Te3 hexagonal nanoplates were fabricated via a facile solvothermal method with the assistance of poly (vinyl pyrrolidone) (PVP). Effects of PVP molecular weight and concentration on the morphology and size distribution of the products were illustrated in this study. Molecular weight of PVP is significant for determining the morphology of Bi2Te3. The hexagonal nanoplates with hig...

Polyaniline/polystyrene (PAni/PS) composites were prepared in aqueous solution by polymerization of styrene and aniline in two-stages. Firstly styrene polymerize by using Ammonium persulfate (APS) as an oxidant in the presence of various surfactants such as poly(vinyl pyrrolidone) (PVP), hydroxypropylcellulose (HPC), poly(vinyl alcohol) (PVA) and surfactive dopant sodium dodecylbenzenesulfonate...

Journal: :journal of paramedical sciences 0
esmaeil biazar department of biomaterials engineering, tonekabon branch, islamic azad university, tonekabon, iran. davood zaeifi proteomics research center, shahid beheshti university of medical sciences, tehran, iran. saeed heidari keshel eye research center, farabi eye hospital, tehran university of medical sciences, tehran, iran sanaz ojani department of biomaterials engineering, tonekabon branch, islamic azad university, tonekabon, iran. arefeh hajiaghaee department of biomaterials engineering, tonekabon branch, islamic azad university, tonekabon, iran. roya safarpour department of biomaterials engineering, tonekabon branch, islamic azad university, tonekabon, iran.

poly vinyl alcohol/chitosan nanofibrous mat were prepared by electrospinning method with suitable pore sizes as potential matrices for soft tissue engineering. the designed scaffolds by electrospinning method evaluated by differentanalyses such morphological, mechanical, and cellular analysis.microscopic results showed diameters of poly vinyl alcohol/chitosan nanofibers were approximately 150 n...

2001
Murat Şen Arzu Yakar

Adsorption and controlled release of terbinafine hydrochloride (TER-HCl) to and from pH-sensitive poly(N-vinyl 2-pyrrolidone/itaconic acid) P(VP/IA) hydrogels were investigated. P(VP/IA) hydrogels were prepared by irradiating the ternary monomer mixtures of N-vinyl 2-pyrrolidone/itaconic acid/ethylene glycol dimethacrylate in aqueous solution by -rays at ambient temperature. Hydrogels containin...

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