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Poly Pore-former

Epoxides can co-polymerize with CO2 to give aliphatic polycarbonates. The co-polymerization is one of the most promising methods to utilize GO2 as a Cl feedstock. The product polycarbonates have many potential applications because of their unique properties. For example, poly(propylene carbonate) (PPG) decomposes completely at 300 °G in any environment to leave a very small amount of ash. This feature makes it applicable to pore former for mesoporous carbon composites. Poly(cyclohexene carbonate) (PGG) has glass-transition temperature (Tg) of 115°G, higher than 35-40 °G of PPG, endowing the materials with properties very similar to polystyrene. ... [Pg.609]

Amphiphilic Pluronic triblock copolymers of two blocks of poly-(ethylene oxide) (PEO) and poly(propylene oxide) in between have worth as both the surface modifier and pore former in the fabrication of membranes (77). The effect of Pluronics with different molecular architectures and contents as a pore forming additive for the fabrication of poly(ethersulfone) ultrafiltration hollow fibers has been investigated. [Pg.41]

There are two major reasons for modification of pore surfaces in some polymeric resins (1) hydrophiiization of hydrophobic surfaces and (2) an increase in loading capacity and kinetics of ion-exchange resins. The former is typical of styrene-divinylbenzene copolymers that are too hydrophobic to be used directly for the separation of biopolymers in some modes. In this case, hydrophilic polymers such as dextran, poly(oxyethylene), poly(ethylene imine), and poly-(vinyl alcohol) are adsorbed and cross-linked on [35,43] or covalently linked to the pore surface to form a thin biopolymer friendly barrier on the hydrophobic surface. Regnier [44] was one of the first to develop a covalently attached hydrophilic coating that substantially decreased the nonspecific irreversible adsorption of proteins. [Pg.26]


See other pages where Poly Pore-former is mentioned: [Pg.452]    [Pg.180]    [Pg.54]    [Pg.440]    [Pg.89]    [Pg.26]    [Pg.285]    [Pg.42]    [Pg.83]    [Pg.1049]    [Pg.5]    [Pg.356]    [Pg.61]    [Pg.98]    [Pg.229]    [Pg.40]    [Pg.231]    [Pg.248]    [Pg.195]    [Pg.64]    [Pg.3758]    [Pg.114]    [Pg.257]    [Pg.271]   
See also in sourсe #XX -- [ Pg.64 ]




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Pore former

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