We have used neutron reflectometry to investigate the behavior of a strong polyelectrolyte brush on a sapphire substrate, grown by atom-transfer radical polymerization (ATRP) from a silane-anchored initiator layer. The initiator layer was deposited from vapor, following treatment of the substrate with an Ar/H(2)O plasma to improve surface reactivity. The deposition process was characterized usi...

Abstract In the building there are several elements such as pillars, floors and walls. The wall is outermost part of that directly receives changes in weather rain. As a result, walls easily fragile make damaged. To reduce damage, it necessary to test cement resistant water (hydrophobic) so not damaged by durable with help hydrophobic agent additives form CaCO 3 polystyrene. purpose this study ...

The effect of enhancement the hydrophobic properties ensemble micro- and nanostructures ZnO as a result coating with gold was discovered. For first time, it has been shown that nanoparticle layer leads to sharp increase in wetting edge angle from 145 168 ° (water drop volume 5 mm3) decrease hydrophobicity/hydrophilicity transition time under ultraviolet irradiation. Keywords: ZnO, gold, superhy...

Over the past years, two-dimensional materials such as graphene, phosphorene, silicene, and boron-nitride have attracted the attention of many researchers. After the successful synthesis of graphene, due to its many new applications, researches began to produce nanosheets from other elements, and among these elements, boron was one of the options. In the periodic table of elements, boron is ahe...

The physicochemical properties (surface tension, dynamic viscosity, crystallization and melting temperatures) of polyvinyl alcohol solutions molecular weight 9, 31 72 kDa have been studied. surface tension the critical concentration micelle formation were determined by method stalogometry, viscosity was using an Oswald viscometer. temperatures in a cooled modified chamber UOP-6 software freezer...

Pluronic/bile salt/phospholipid mixed micelles (Pluronic/BS/PS-MM) drug carrier system for solubilization hydrophobic drugs was developed. A typical hydrophobic compound, pyrene, was selected as a representative hydrophobic compound to model the hydrophobic drugs. Five Pluronics, F68, F88, F98, F108, and F127 with different PPO chain length were studied. CMC data and solubilization capacities w...

background: lipase is an enzyme with immense application potential. ester synthesis by lipase catalysis in organic media is an area of key industrial relevance. enzymatic preparations with traits that cater to the needs of this function are hence being intensely researched. objective: the objectives of the study were to immobilize the lipase from bacillus sp. ps35 by cross-linking and adsorptio...

some properties of compounds in degrading bacteria are required for biodegradation of contaminants to higher performance. those strains which have a high percentage of these features are more effective at biodegradation. the present experiments were designed to measure these parameters. in this study, measurement of cell surface hydrophobic-degrading bacteria was designed which oil was separate...