financial services and membrane

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Glycerol Derivatives of Cutin and Suberin Monomers: Synthesis and Self-Assembly

Glycerol derivatives of cutin and suberin monomers were synthesized by acid catalysis. Their dispersion in an aqueous solution was examined by phase contrast microscopy, neutron scattering, and solid state NMR. It is shown that the phase behavior strongly depends on the nature of the derivatives forming either lumps of aggregated...

Tags: American Chemical Society, Financial Services, Derivatives, Membrane

White papers 2004-12-18

Pervaporation of Ethanol-Water Mixtures Through Poly (1 Trimethylsilyl-1-Propyne) (PTMSP) Membranes

The separation of alcohol-water mixtures by pervaporation has been preferentially carried out through hydrophobic membranes because it is more practical to permeate alcohol through the membrane. Nevertheless, most polymeric membranes are water permselective as the molecular size of water is smaller than that of ethanol. Ethanol-permselective membranes have been limited...

Tags: Hardware, Semiconductors, Financial Services, PTMSP, Membrane

White papers 2002-03-26

Determination of Diffusion and Distribution Coefficients in Polymer Membranes by Unsteady-State Dialysis and Steady-State RO Methods

A new method has been developed for determination and analysis of diffusion and distribution coefficients of salts in dialysis and RO membranes based on unsteady-state dialysis and steady-state RO experimental data. The method is based on a two-part model of heterogeneous RO membranes consisting of perfect or dense and imperfect...

Tags: Membrane, Finance, Financial Services, Operational Accounting, Polymer, Method

White papers 2002-02-13