PUTNAM, Conn. (Feb. 11, 2010)—PolyMedex Discovery Group has expanded its NanoMed-brand nanoparticle technology to include thermoplastic elastomers formulations for the minimally invasive device market, the company said.
These new formulations dramatically increase polymer stiffness while maintaining flexibility, resulting in increased push and torque performance for catheter devices, PolyMedex said.
The Putnam-based firm's patented NanoMed compounds incorporate ultra-fine nanoparticles within the polymer matrix using dispersion technology to create oriented reinforcement at the molecular level. The nanoparticles interact directly with the polymer structure, resulting in substantial improvement of selective material properties at low filler loadings, the company said.
Nanoparticles used in NanoMed formulations have a thickness of less than one nanometer and widths in the range of five micrometers. Unlike traditional polymer reinforcing additives, such as carbon or glass fibers, which are macro-reinforcing agents of the plastic part, nanoparticles immobilize only select portions of the polymer structure. Stiffness, or flexural modulus, is increased while preserving elasticity, impact resistance, downstream processability, and biocompatibility, PolyMedex said.