DSM Biomedical BioSpan® SPU Segmented Polyether Polyurethane (SPU)

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DSM Biomedical BioSpan® SPU Segmented Polyether Polyurethane (SPU)
Categories:	Polymer; Thermoplastic; Polyurethane, TP; Thermoplastic Polyurethane (TPUR), Polyether Grade
Material Notes:	The flex life exhibited by BioSpan® SPU enables good performance in many different types of medical devices. This elastomeric polymer has shown the ability to withstand millions of flex cycles. The combination of properties inspires exceptional devices In addition to excellent flex life, BioSpan® SPU offers a combination of additional properties, including low modulus, high tensile strength, high elongation, proven biocompatibility and good biostability. Because of these properties, it is used in ventricular assist devices as well as in artificial hearts, interventional cardiology balloons, drug eluting stents and spinal implants. Tailor Made BioSpan® SPU can be enhanced with SME® technology to incorporate different surface active end groups such as silicone and fluorocarbon. SME® technology eliminates the need for additional surface modification steps after the device component is fabricated. Summary of Product Benefits Excellent flex life Outstanding mechanical strength Hydrolytically stable Extremely elastic Biocompatible Adaptable with SME® technology Comprehensive FDA Master File Information provided by DSM Biomedical.
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Physical Properties	Metric	English	Comments

Water Absorption	1.5 %	1.5 %	ASTM D570

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	70	70	ASTM D2240
Tensile Strength, Ultimate	41.4 MPa	6000 psi	ASTM D1708
Elongation at Break	851 %	851 %	ASTM D1708
Modulus of Elasticity	0.01455 GPa	2.110 ksi	initial; ASTM D1708
Coefficient of Friction	0.92	0.92	ASTM D1894

Thermal Properties	Metric	English	Comments
Glass Transition Temp, Tg	-65.0 °C	-85.0 °F	ASTM D3418

Descriptive Properties
Ames Mutagenicity Assay	Non-mutagenic
Appearance	Translucent
Balb/c-3T3 Cell Transformation	Does not induce morphological cell transformation in activated or non-activated test systems
Chromosome Aberration	Non-genotoxic
Contact Angle (°)	76
Hemolysis	Non-hemolytic
Intracutaneous Injection	Non-toxic
Kligman’s Maximization-CSO extract	Weak allergic potential
Kligman’s Maximization-NaCl extract	Weak allergic potential
Lee White Clotting	No effect on the clotting time of whole blood
Primary Mucosal	Non-irritant
Primary Skin	Non-irritant
Repeat Dose IV Study	Non-toxic
Solution Concentration by Weight (%)	24
USP Acute Systemic	Non-toxic
USP Cytotoxicity (MEM Elution)	Non-cytotoxic
USP Muscle Implantation (120 days/rats)	Macroscopic-not significant tissue contact irritation, Microscopic-slight irritant
USP Muscle Implantation (14 days/rats)	Macroscopic-not significant tissue contact irritation, Microscopic-Non-irritant
USP Pyrogen	Non-pyrogenic

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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