The physical chemistry of the silver photography processes, exposure, development and fixing, is briefly summarized. The mechanism of the autocatalytic development by the developer of the clusters produced in silver bromide crystals during the exposure which is controlled by the critical nuclearity of these clusters was understood from pulse radiolysis studies. The effective quantum yield Feff ...

We report the synthesis of hydroxyapatite (HAp)-based antibacterial biomaterials using a mussel shell as calcium source and by integration silver ions via wet precipitation method. The doping at 2 mol% can provide silver-doped carbonated HAp while 10 mol% offer HAp/silver oxide nanocomposite. synthesized Ag-integrated samples exhibit H (263–903Mpa) E (0.96–3.31GPa) almost similar to cancellous ...

New polyurethane (PU) nanocomposites were prepared from a dispersion of 0 - 5% montmorillonite (MMT) clay with isocyanate and soya oil polyol that was synthesized via transesterification of triglycerides to reduce petroleum dependence. FT-IR spectra indicate the presence of hydrogen bonding between nanoclay and the polymer matrix, whereas the exfoliated structure of clay layers was confirmed by...

Polyamide 6 (PA6) was melt-blended with an intumescent flame retardant (FR), multi-wall carbon nanotubes (MWNTs), and nanoclay particles to produce multi-component FR-PA6 nanocomposites. FR-PA6 nanofibers were processed from varied nanocomposite formulations via electrospinning. Electrospinnability, morphology, along with combustion and thermal properties of the nanofibers were investigated. Bo...

In this study, a comparison between neat poly(vinylidene fluoride) (PVDF) membrane and composite (PVDF-Nanoclay and PVDF-PVP-Nanoclay) membranes is presented. All membranes were synthesized by the phase inversion process, using 18% PVDF, n-methylpyrrolidone as solvent and water as the non-solvent. Demineralized water cross-flow permeation tests were conducted to evaluate the membranes performan...

• Nano-powders of functionalized graphene and hydroxyapatite were synthesized. Novel, non-toxic dental adhesives formulated. In-vitro performance under clinically relevant environmental conditions aging enables clinical use. Functionalized fillers are proposed as reinforcing particles in light-cured for applications. Silica-silver-graphene (SiO 2 -Ag-Gr), silver-doped (HA-Ag), silver doped (HA-...

Inverted top-emitting organic light-emitting devices (ITOLEDs) employing thin film of vanadium pentoxide (V2O5) capped with vacuum deposited semitransparent silver layer as top anode were studied. The devices consisted of C-545T doped in Alq3 as emitting layers exhibited a maximum external current efficiency of ~11cd/A and a turn on voltage of ~6.4V.We attribute the good performance of the devi...