MAGNETIC NANOCOMPOSITES OBTAINED BY IN SITU POLYMERIZATION OF POLY(EPSILON-CAPROLACTONE) AND MAGNETITE

SOFIA TALAMAS; ARANGUREN, M. I.; MUCCI, V.; MEIORIN, C.

Buenos Aires

Simposio; XIII Simposio Argentino de Polimeros; 2019

Poly--caprolactone (PCL) is a widely used polymer because it is biodegradable, biocompatible and semicrystalline having a very low glass transition temperature (Guarino, 2017). PCL could be obtained by ring opening polymerization of ε-caprolactone using a catalyst such as stannous octoate. Moreover, its thermal stability, long-term degradation properties and its poor mechanical strength can be improved with the addition of nanofillers in the preparation of nanocomposites.In this work, magnetite nanoparticles (MNPs) are used as nanofillers. Hybrid core-shell particles were prepared with magnetite and functionalized with carboxylic acid terminated oligomers. The core possess superparamagnetic behavior and the shell act as stabilizing layer. This surface modification allows obtaining, either, nanocomposites or core-shell particles to be used in different matrices as reinforcements.The aim of this work is to obtain magnetic nanocomposites (MNC) from the synthesis of Fe3O4 and poly-( -caprolactone) (PCL). Three types of MNCs were synthesized maintaining the same percentage of Fe3O4 (10 wt. %): Fe3O4/ PCL, Fe3O4 with oleic acid / PCL and Fe3O4 with glycolic acid / PCL. The chosen nomenclature is MNC-1, MNC-2 and MNC-3, respectively.