Membrane Science and Technology

SynopsisPorous membranes of poly(viny1 chloride) were obtained from cation exchange membranes prepared by the soaking and paste method, by selective decomposition of the cation exchange resin component. The structure and properties of the membranes as filters were investigated by scanning electron microscopy, infrared analysis, water permeability measurement, and determination of rejections for some solutes and dispersers with widely differing sizes. They completely rejected two kinds of bacteria and polymer particles with a diameter of about 0.1 pm. The rejection of hemoglobin ranged from 90 to loo%, depending upon the preparative conditions. Heat treatment of the cation exchange membranes increased water permeability of the resulting PVC porous membranes and decreased hemoglobin rejection in varying degrees, depending upon the treatment temperature.

show abstract

Microporous polypropylene hollow fibers with double layers

Nagō¹,

Mizutani²

1995

J of Applied Polymer Sci

View full text Add to dashboard Cite

SYNOPSISMicroporous polypropylene hollow fibers with double layers were prepared by stretching double-layered polypropylene microtubes containing polymethylsilsesquioxane fillers: the relatively smaller filler in the inner layer and relatively larger filler in the outer layer. The resultant hollow fibers have a finely interconnected fibrous structure parallel to fiber axis. Their N2 gas permeabilities were measured to estimate the fibrous structure: tortuosity factor, effective porosity, and pore size. 0 1995 John Wiley & Sons, Inc.

show abstract

Membrane Science and Technology

Cited by 14 publications

References 0 publications

Microporous polypropylene films containing ultrafine silica particles

Microporous polypropylene films containing ultrafine silica particles

Structure and properties of microporous membranes prepared by applying phase separation during polymerization

Microporous polypropylene hollow fibers with double layers

Contact Info

Product

Resources

About