[PDF] Top 20 Preparation and Study of Some Optical Parameters of (Polyvinyl Alcohol

... (ln α ) versus (h ʋ ). The magnitude of Urbach energy of these composite films has a decreasing trend as the percentage of KI salt increases. This result was reported by Davis and Mott who revealed that the filling can ... See full document

... this study, the SAP fertilizer hydrogels were prepared from chitosan and polyvinyl alcohol using freeze thawing technique with glutaraldehyde as a ... See full document

... (polyvinyl alcohol (PVA)) films were prepared by using casting ...on some optical properties of the prepared ...these optical parameters are increased with increasing the filler ... See full document

... and optical properties of an organic semiconductor based on ...2009. Study of microporous PVA/PVC composite polymer membrane and it application to MnO 2 ... See full document

... polymer polyvinyl alcohol, gas releasing excipients sodium bicarbonate and citric acid along with other ...buoyancy study; uniformity of drug content, disintegration, in vitro dissolution ... See full document

... detailed study on the optical properties of PVA/Ag nanocomposite ...of study, the first prepared film by reduction ...and study the transmission absorption coefficient, refractive index, ... See full document

... The optical constants and optical energy gap of (PVA-PEG-CuO) nano-composite films have been studied in the present ...present study is aimed to modification of the optical properties of ... See full document

... The performance of the solar cell depended on the many factors like amount of absorbed incident light, crystallinity of material, morphology of thin film surface and influence of dopants on the material [40-41]. Three ... See full document

... this study, natural zeolite (mordenite) was modified by using dimetliyldioctadecylammonium bromide (DDAB) with polyvinyl alcohol (PVA) to afford surfactant modified granular zeolite (SMGZ) as ... See full document

... of polyvinyl alcohol (PVA)–polyvinyl pyrrolidone (PVP) blend doped with lead nitrate(Pb(NO 3 ) 2 ) were prepared by solution casting method, with doping level (DL) of Pb(NO 3 ) 2 in PVA – PVP ... See full document

... In this work, we successfully demonstrated the ability of inkjet printing technology to deposit polymer multilayers. The rheological behavior was investigated, and the experimental results demonstrate that the formulated ... See full document

... Polyvinyl acetate is the starting material in the manufacturing of polyvinyl alcohol (PVA). PVA is hydrolyzed by treating it with an alcoholic solution in the presence of an aqueous acid or alkali. ... See full document

... above study it can be concluded that semi-IPNs of PVA/PMAA can be explored as a possible delivery systems for protein drugs that protects the proteins against the harsh environment of acidic pH but releases the ... See full document

... Now-a-days, great attention is focused on polymer/ceramic three- dimensional scaffolds favoring craniofacial bone regeneration. Several studies have focused on the composite scaffold for craniofacial bone tissue ... See full document

... ZnO/gold core/shell is a kind of nanostructure which due to having different surface chemistry are formed a new class of gold coated nanoparticles that will be essential for nanoelectronic,biological and catalytic ... See full document

... Reduced viscosity (sp/C) and inherent viscosity ln ( rel /C) of PVA (M w = 1,25,000) has been calculated by measuring the flow time of polymer solution in solvents like distilled water and 4M Urea at six different ... See full document

... was operated at 40 kV and 30 mA. The scanning scope of 2 θ was 5 ° –80 ° at room temperature. The upper surface and cross- section morphology of the biocomposite film were examined using a JSM-6360LA field emission ... See full document

... Shrimp source Chitosan in a form of white flaks with a degree of deacetylation of 88.1% defined by UV method [25] was obtained from commercial source. Polyvinyl alcohol was purchased from Sigma Chemicals ... See full document

... poly(vinyl alcohol) (PVA) nanofibrous mats loaded with aligned and narrowly dispersed silver nanoparticles (AgNPs) are obtained via the electrospin- ning process from pure ... See full document

... polyvinyl alcohol, triphenyltin chloride, lead acetate trihydrate, benzoyl peroxide, bis (tri-n-butyltin) oxide, benzoic anhydride (benzoate), dibutyltin, gallotannic acid and tributyltin) as ligands were ... See full document