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

SOFÍA TALAMAS; MIRTA I. ARANGUREN; VERÓNICA L. MUCCI; CINTIA MEIORIN

Buenos Aires

Simposio; SAP 2019 - XIII SIMPOSIO ARGENTINO DE POLÍMEROS; 2019

INTI-UTN-CIHIDECAR-INIFTA-ITPN-CIDCA

Poly--caprolactone (PCL) is a widely used polymer because it isbiodegradable, biocompatible and semicrystalline having a verylow glass transition temperature (Guarino, 2017). PCL could beobtained by ring opening polymerization of ε-caprolactoneusing a catalyst such as stannous octoate. Moreover, itsthermal stability, long-term degradation properties and itspoor mechanical strength can be improved with the addition ofnanofillers in the preparation of nanocomposites.In this work, magnetite nanoparticles (MNPs) are used asnanofillers. Hybrid core-shell particles were prepared withmagnetite and functionalized with carboxylic acid terminatedoligomers. The core possess superparamagnetic behavior andthe shell act as stabilizing layer. This surface modificationallows obtaining, either, nanocomposites or core-shell particlesto 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 thesame percentage of Fe3O4 (10 wt. %): Fe3O4/ PCL, Fe3O4 witholeic acid / PCL and Fe3O4 with glycolic acid / PCL. The chosennomenclature is MNC-1, MNC-2 and MNC-3, respectively.