26/02/2013

www.gupta-verlag.de/thermoplastic-elastomers

New Pebax grade for medical applications

Most polymers used in minimally invasive surgical devices are hydrophobic and create friction against moist bodily tissue. Hydrophilic coatings are often applied to these polymer components to reduce friction and avoid tissue trauma, yet they add additional manufacturing steps and may provide more lubricity than necessary. The hydrophilic Pebax grade polymer absorbs up to 48 % of moisture from the surrounding environment and forms hydrogen bonds that create a wet film on the component surface that enhance lubricity against bodily tissue. Comparatively, in the same conditions Pebax SA 01 MED copolymers commonly used for medical devices absorb only 1.2 % moisture. Pebax MV 1074 SA 01 MED is a flexible TPE with a 40 Shore D hardness and 80 MPa (11,600 psi) flexural modulus. Ease of processing and melt compatibility with traditional polyether block amide and polymers offer excellent opportunities in co-extrusion applications. It can be extruded as a hydrophilic polymer layer in a multi-layer tube or film extrusion for surfaces directly in contact with bodily tissue that require high moisture absorption.Arkema informs about the new product Medtech Europe, February 26-28 in Stuttgart (Germany) at the stand of distribution partner Velox (stand no. 1059)

www.gupta-verlag.de/thermoplastic-elastomers