نتایج جستجو برای: pvp pvpam film

تعداد نتایج: 93545  

Journal: :Journal of Polymers and The Environment 2022

The development of thin-film composite membranes has gained more importance as they exhibit higher permeability, solute rejection and improved antifouling behavior. incorporation hydrophilic nanomaterials within the thin film reported to effectively increase hydrophilicity improve membrane performance. In this study novel nanofiltration were prepared by interfacial polymerization trimesoyl chlo...

Journal: :Applied sciences 2022

A simple scheme for single-channel coherent perfect absorption (CPA) of transparent materials is proposed and experimentally realized using total internal reflection by grazing incidence, with a single dielectric layer sandwiched semi-infinite layers. In 1.48-µm thick polyvinylpyrrolidone (PVP) film, dip-coated on MgF2 substrate both in the visible, reflectance dips due to nearly 90% CPA were o...

Journal: :The Analyst 2013
Emmet J O'Reilly Tia E Keyes Robert J Forster Lynn Dennany

The electrochemiluminescent (ECL) properties of a luminescent metal centre, [Ru(bpy)(3)](2+), can be significantly modulated through its electronic interaction with neighbouring centres and the polymer backbone used to confine it on an electrode surface. From the perspective of ECL based sensing devices, an increase in the ECL efficiency of a metallopolymer film can result in enhanced sensor se...

2003
G. Fetih M. A. Ibrahim

1. Abstract: The objective of this work was to develop suitable film formulations of ketorolac tromethamine (KT) for transdermal use and to investigate the effect of film composition and permeation enhancers on the in-vitro release and skin permeation of the drug. Polyvinyl alcohol (PVA), sodium carboxymethylcellulose (NaCMC), and chitosan were used as film-forming polymers. The adhesive hydrop...

Journal: :Food Quality and Safety 2022

Abstract Study on the application of nanofibers in food active packaging has been a research hotspot recent years. In this work, solution blow spinning (SBS) was applied to rapidly fabricate polycaprolactone (PCL), polyvinyl pyrrolidone (PVP), and PCL/PVP nanofibrous films encapsulate chlorogenic acid (CGA). All showed uniform smooth nanofibers, Fourier transform infrared spectroscopy X-ray dif...

Journal: :Materials research express 2022

Abstract Attaining low-temperature sintering and high electrical conductivity is vital in the field of flexible electronics. Inks with silver oxalate as precursor have recently received significant attention this field; however, temperature long time limit commercial applicability. High can shorten but lead to porous uneven film morphology; thus, reducing conductivity. On other hand, low prolon...

2002
P. Cyganik A. Budkowski J. Raczkowska Z. Postawa

Nanometer films composed of model ternary blend of deuterated polystyrene (dPS), poly(2-vinylpyridine) (PVP) and poly(methyl methacrylate) (PMMA) were studied after spin-coating from a common solvent. Surface undulations and the distribution of phase-separated domains at the surface and in the bulk are closely related as revealed by atomic (AFM) and lateral (LFM) force microscopy. For the first...

Journal: :Acta pharmaceutica 2009
Ashu Mittal Udai Vir Singh Sara Asgar Ali

The objective of the present work was to develop a suitable transdermal drug delivery system for nitrendipine. Polymeric films of nitrendipine were prepared by the film casting technique (glass ring) on mercury substrate. They were evaluated for physicochemical parameters, in vitro release and ex vivo permeation (heat separated human epidermis). Release of the drug from the films followed anoma...

Journal: :Optical Materials 2022

The solution-cast method was used to synthesize magnesia (MgO) nanoparticles filled poly(vinyl alcohol) (PVA) and pyrrolidone) (PVP) blend matrix (80/20 wt %) based polymeric nanocomposite (PNC) films (i.e., [PVA–PVP]–x % MgO; x = 0, 0.06, 0.3, 0.6, 3.1, 6.25). Most of these PNC materials structures are amorphous, according an X-ray diffraction investigation. surface smooth homogeneous under SE...

Journal: :Hungarian Journal of Industrial Chemistry 2021

Polymers are materials composed of macromolecules characterized by duplicates smaller molecules that covalently bonded together to provide a set properties. Corrosion inhibition such compounds is usually attributed their adsorption on the metal-solution interface. The effect different sizes polyvinylpyrrolidone (PVP) corrosion carbon steel (C-steel) in solutions perchloric acid was investigated...

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