Shape memory polyurethanes reinforced with magnetic nanoparticles

SOTO, G.D.; C. MEIORIN; D. G. ACTIS; P. MENDOZ ZÉLIS; O. MOSCOSO LONDOÑO; D. MURACA; M. A. MOSIEWICKI; N. E. MARCOVICH

MAR DEL PLATA

Simposio; XVI Simposio Latinoamericano de Polímeros - XIV Congreso Iberoamericano de Polímeros. SLAP 2018; 2018

In recent years shape memory polymers (SMPs) have found growing interests because of their special and unique applications in medical, electronics, high-tech industries as well as daily life1. Among these polymers, thermoplastic segmented polyurethanes (TPU) pose shape-memory properties activated by heating and also excellent chemical stability, potential biocompatibility and biodegradability. In addition, single-domain magnetic nanoparticles (MNPs) that exhibit super-paramagnetic behavior, can be incorporated relatively easily to these TPU, leading to nanocomposite materials (NC) with novel activation mechanisms to recover the original shape. In this sense, Fe3O4 particles have been found to be suitable for applications such as magnetic resonance imaging contrast agents and hyperthermia procedures2.Thus, the aim of this work is to study effect of Fe3O4 content on the magnetic response and inductive heating of NC based on a commercial TPU.