Polypropylene Polyvinylpyrrolidone

Capryloamphoglycinate, cocoamphodiacetate, disodium cocoamphodiacetate, lauroamphoacetate, sodium capryloamphohydroxypropyl sulfonate, sodium mixed Cg amphocarboxylate, and alkylamphohydroxypropyl sulfonate Polyvinylpyrrolidone, polyvinyl alcohol, starches, cellulosic material, or partially hydrolyzed polyacrylamide, and polypropylene glycol, or a betaine [43]... 

Na dextran sulfate Polypropylene glycol Methoxypolyethylene glycol NaCl Polyethylene glycol NaCl Polyvinyl alcohol NaCl Polyvinylpyrrolidone NaCl Methylcellulose NaCl Ethylhydroxyethylcellulose NaCl Hydroxypropyldextran NaCl Dextran NaCl... 

Fouling is expected to be more severe with hydrophobic membranes. Polyvinylidenefluoride (PVDF), polypropylene (PP) and polyethersul-fone (PES) are typical materials used to manufacture commercial MBR membranes, because of their good mechanical and chemical resistance. Unfortunately, these materials are relatively hydrophobic (water-repelling, but organic- and oil-attracting) and require to be mixed with additives, such as polyvinylpyrrolidone (PVP) and methacrylates, before being used in aqueous media. 

Fig. 5.33 The mean apparent molar volumes in the trisodium citrate + polyvinylpyrrolidone (PVP) +water and tripotassium citrate + polypropylene oxide (PPO) 400 + water systems at 25 °C as a funetion of the total molal eonoentration in solutions. - NUjCit, - K Cit, -Na3Cit+0.002 mol kg" PVP, - Na3Cit + 0.004 mol kg" PVP, - K3Cit+0.051 mol kg" PPO 400, - K3Cit+0.104 mol kg" PPO 400...

MAJOR POLYMER APPLICATIONS ABS, acrylics, cellulose acetate, ethylene octene decadiene copolymer, maleic acid styrene copolymer, polycarbonate, polyethylene, polylactide, polypropylene, polyvinylalco-hol, polyvinylpyrrolidone ... 

Probably the largest volume of published work in the field of surfactant-polymer interactions has involved surfactants and nonionic polymers such as polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), polyvinyl acetate (PVAc), polypropylene glycol (PPG), methyl cellulose (MC), and polyethylene oxide (POE). The preferred surfactant has been (of course ) the classic—sodium dodecylsulfate (SDS). The results of most studies with SDS and similar surfactants indicate that the more hydrophobic the polymer, the greater is the interaction with anionic surfactants. For a given anionic surfactant, it has been found that adsorption progresses in the order PVP > PPG > PVAc > MC > PEG > PVA. In such systems, the primary driving force for surfactant-polymer interaction will be van der Waals forces and... 

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