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Biomedical Polymers and Compounds™

Medical plastics

Insulation Properties of Medical Plastics

Plastics are generally considered insulators, but can transmit some electrical energy at higher frequencies. The effectiveness of a material as an insulator is usually measured by dielectric constant and dissipation factor properties.

Medical Plastics That Reduce Hospital Infections

One out of every 25 patients in U.S. acute care hospitals contract a health care associated infection, according to a survey by the Center for Disease Control (CDC).  One in every four of these are associated with medical devices. In-dwelling devices, such as central venous (CV) catheters, are particularly susceptible to bacteria colonization which can enter the blood stream.  Antimicrobial additives can be melt compounded into plastics to kill harmful bacteria on the surface of device components.

Material Price v. Component Cost

Thermoplastics are sold by unit weight (e.g., $/lb, €/kg). However, the material cost for a plastic component must consider component volume and density of the plastic.  For thermoplastics, density is reported as ‘specific gravity.’

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