نتایج جستجو برای: surface active
تعداد نتایج: 1043025 فیلتر نتایج به سال:
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چکیده ندارد.
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
The definition for a detergent is a cleaning agent. The main cleaning agent used in earlier days was soap. This term means a compound formed from the reaction of a fatty acid with a base such as caustic soda, forming the sodium soap of the acid. The more commonly used cleaning agent in this day and age is the synthetic detergent (SYNDET) which is a formulation such as TIDE or FAB. The essential...
The importance of gravitational instability in determining the emulsification of vitreal tamponades is discussed. Theoretical results and numerical simulations indicate that the spontaneous formation of water-silicon oil is a rare event and that the very low concentration of surface active agents cannot justify the systematic formation of emulsions. The gravitational instabilities seem to play ...
Verfahren erzielt wird. Inspection of Specular Surfaces with Inverse Patterns The application of inverse patterns to fast and robust mirror surface evaluation is shown. In a well controlled environment, one observes via the mirror surface a screen onto which a well-defined pattern is displayed. Evaluation of the deflected pattern is used to determine surface defects of the object under test. In...
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