Polyether-segmented nylon hemodialysis membranes. II. Morphologies and permeability characteristics of polyether-segmented nylon 610 membrane prepared by the phase inversion method

Abstract

The relationships between the morphologies and the permeability characteristics as dialysis membrane of polyether‐segmented nylon 610 (PE‐Ny610) have been investigated. PE‐Ny610 used are poly(propylene oxide) (PPO)‐segmented nylon 610 containing 25 wt % PPO (PPO‐Ny610) and poly(ethylene oxide) (PEO)‐segmented nylon 610 containing 15 wt % PEO (PEO‐Ny610). The morphologies in the cross section of the membranes exhibit the cellular porous structures due to liquid‐liquid phase separation. On the other hand, the structures of the surfaces are mainly composed of the crystalline spherulite due to liquid‐solid phase separation. These morphologies are little affected by the composition ratio of the coagulant, calcium chloride/methanol/water mixture. PEO‐Ny610 membranes have shown superior membrane performances to the PPO‐Ny610 membrane. The effect of PEO content in PEO‐Ny610 on the adhesion of platelet onto the PEO‐Ny610 film surface was investigated and it is concluded that PEO‐Ny610 having > 10 wt % PEO shows a good nonthrombogenicity equal to PPO‐Ny610. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:1713–1721, 1997

Selective Aerobic Oxidation of Methanol in the Coexistence of Amines by Nanoporous Gold Catalysts: Highly Efficient Synthesis of Formamides

“…As medical technology has become more advanced, various polymer materials have been used for medical applications or for materials such as artificial internal organs (e.g., hearts, lungs, blood vessels, kidneys,1–6 knee and hip joints7). They are also used for catheters,8–10 blood bags,11 disposable syringes, blood or protein storage applications,12 and so forth.…”

Simulation of Human Small Intestinal Digestion of Starch Using an In Vitro System Based on a Dialysis Membrane Process

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Sizeable Macroporous Monolithic Polyamide Entities Prepared in Closed Molds by Thermally Mediated Dissolution and Phase Segregation

“…Polyamides are among the polymers more frequently used for preparing membranes by dissolution/precipitation, and nylon membranes have found a wide range of applications in environmental, , biotechnological, − and medical sciences . These nylon membranes can be made by either of the techniques mentioned above.…”

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