Abstract The article presents results of the research on influence halloysite and its modified versions in a configuration with expandable graphite thermal stability, integrity intumescence fire-resistant paints for steel based epoxy resin ammonium polyphosphate/pentaerythritol/melamine (APP/PER/MEL) system. preliminary scanning electron microscope (SEM) analysis showed that sulfuric acid (M2) ...

Plastic pollution of the natural environment is ubiquitous, and around 40% all plastic waste produced globally used in single-use products only 9% recycled. From this waste, expandable polystyrene pose a major problem because its great volume low density. To abord issue, authors proposed circular economy model for EPS post-consumer 2019 through case study with help one local manufacturer. Altho...

Non-specific protein adsorption is detrimental to the performance of many biomedical devices. Polystyrene is a commonly used material in devices and thin films. Simple reliable surface modification of polystyrene to render it protein resistant is desired in particular for device fabrication and orthogonal functionalisation schemes. This report details modifications carried out on a polystyrene ...

in this study, polystyrene ethylene butylene polystyrene (psebs) was functionalized to prepare mono and bipolar ion exchange membranes. in the case of the bipolar membrane, platinum was used as the intermediate layer. nacl solution of concentration ranging from 5 g/l to 25 g/l was used as the feed solution. a commercially procured ion exchange membrane made of polystyrene divinyl benzene was al...

a series of polystyrene hybrid nanocomposites have been fabricated with varying amounts of tio2 viz., 0, 0.5 and 1 % w/w along with 3% ts by in-situ polymerization method. the influence of surface modified tio2 nanoparticles on the thermal properties of ps matrix was examined using thermogravimetry and differential scanning calorimetry. thermal characteristics of the polystyrene/ts/tio2 hybrid ...

The high molecular weight poly (ethylene oxide) was used to synthesize telechelic bromine terminated poly (ethylene oxide) polymers. The low molecular weight polystyrene anion was generated by living anionic polymerization by controlling monomer/initiator ratio. The living polystyrene anion was reacted with telechelic bromine terminated poly (ethylene oxide) polymers to obtain water soluble pol...

OBJECTIVES This study sought to investigate whether self-expanding stents are more effective than balloon-expandable stents for reducing stent malapposition at 3 days after implantation in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention. BACKGROUND Acute myocardial infarction is associated with vasoconstriction and large thrombus ...

Styrene and polystyrene are two important organic compounds with a wide range of applications. The key difference between styrene and polystyrene is that it is the polymerization of styrene that forms polystyrene, a synthetic thermoplastic elastomer. Styrene is chemically called vinyl benzene and is among one of the oldest known vinyl compounds in the world. This aromaticcompound was first isol...

simple. dependable. proven. Abstract: The treatment of adjacent level disease subsequent to lumbar fusion often involves a particularly complex and invasive surgical procedure. This case report demonstrates that the stand-alone VariLift-L Expandable Interbody Fusion Device can provide a straight-forward and clinically successful solution for these patients. Treatment of Adjacent Level Disease w...