✦ LIBER ✦

Polyether-segmented nylon hemodialysis membranes. III. Preparation and properties of new polyether-segmented nylon

✍ Scribed by Akira Mochizuki; Yukio Seita; T. Nak Azaki; T. Fukuoka; K. Matsushima; Shuzo Yamashita

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 141 KB
Volume: 65
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970829)65:9<1723::aid-app8>3.0.co;2-h

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✦ Synopsis

In order to apply a blood-compatible polymer to hemodialysis membrane, a new polyether-segmented nylon which dissolved in common organic solvents was designed. The basic polyether-segmented nylon was synthesized by melt polycondensation from sebacic acid, m-xylenediamine, and a,v-bisaminopropyl-poly (ethylene oxide). To improve the solubility, azelaic acid and hexamethylenediamine were copolycondensed with the basic copolymer. The solubility was correlated with the heat of fusion ( DH m ) of the copolymer. When DH m is õ 30 mJ/mg, the polymer is soluble in dimethylsulfoxide and makes a stable solution. The nonthrombogenicity was investigated in the viewpoint of adhesion of platelet onto the copolymer surface. It is made clear that the surface of the block copolymer, having ú 10 wt % of poly(ethylene oxide) , suppresses the adhesion of platelet, and the composition of the nylon block has no effect on the adhesion of platelet.

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