Membranes - Membrane Technology Membrane Barrier...

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Membrane Technology
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Membrane Barrier Application Carlsberg's plastic beer bottle Just a few months after introducing a refillable beer bottle made of polyethylene naphthalate in Denmark. Copenhagen- based Carlsberg AS has announced its Carlsberg-Tetley subsidiary is launching a one-way plastic beer bottle in the United Kingdom. Made by Schmalbach-Lubeca (Manchester, MI), the 500-mL bottle weighs 29 g. It is co-injection/ stretch blow-molded and consists of "modified" nylon between two layers of polyethylene terephthalate. Schmalbach-Lubeca isn't saying if the bottle incorporates an oxygen scavenger.
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Membrane Nomenclature Feed Retentate (residue) Permeate
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Pore Diffusion Mechanism Porous Membrane
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Solution Diffusion Mechanism (Permeability = Solubility * Diffusivity) Solute “dissolves” in polymer ( Solubility )
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Solute moves through polymer channels via diffusive jump (Diffusivity) C C Si CH 3 CH 3 H 3 C CH 3 PTMSP
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Membrane Polymers
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Relative Permeation Rates Through Polysulfone H 2 O, H 2 , He, H 2 S CO 2 , O 2 Ar, CO, N 2 , CH 4 Fast Medium Slow
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Permeability – Selectivity Plot (glassy polymer)
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Permeability – Selectivity Plot (rubbery polymer)
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Experimental Test Unit
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Membranes - Membrane Technology Membrane Barrier...

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