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Synthesis of hydrolytically stable low elastic modulus polyurethane-urea for biomedical applications

Tipo de material: TextoTextoSeries ; Polymer International, 49(1), p.88-92, 2000Trabajos contenidos:
  • Jayabalan, M
  • Lizymol, P.P
  • Thomas, V
Tema(s): Recursos en línea: Resumen: Polyurethane-urea without ether linkages was synthesised using dicyclohexyl-methane diisocyanate (SMDI), hydroxy-terminated polybutadiene (HTPBD)andm-phenylenediamine (PDA). The hydrolytic stability of this polymer was investigated under in vitro conditions using Ringer's solution and phosphate-buffered saline, and the stability of candidate polyurethane-urea polymers was compared with that of polyurethane prepared with SMDI, HTPBD and 1,4-butanediol [BD]. The change of tensile properties, hardness and surface properties in the aged polymer is signi®cant for polyurethane when compared with those of polyurethane-urea polymer. The in vitro study revealed possible applications of polyurethane-urea for long-term biomedical applications.
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Polyurethane-urea without ether linkages was synthesised using dicyclohexyl-methane diisocyanate (SMDI), hydroxy-terminated polybutadiene (HTPBD)andm-phenylenediamine (PDA). The hydrolytic stability of this polymer was investigated under in vitro conditions using Ringer's solution and phosphate-buffered saline, and the stability of candidate polyurethane-urea polymers was compared with that of polyurethane prepared with SMDI, HTPBD and 1,4-butanediol [BD]. The change of tensile properties, hardness and surface properties in the aged polymer is signi®cant for polyurethane when compared with those of polyurethane-urea polymer. The in vitro study revealed possible applications of polyurethane-urea for long-term biomedical applications.

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