Non-isothermal crystallization process of linear PCL and PHEMA-g-PCL-b-PCL copolymers

MARIO D. NINAGO; VIVINA HANAZUMI; ANDRÉS E. CIOLINO; MARCELO A. VILLAR; AUGUSTO G.O. DE FREITAS; PAULO I.R. MURARO; CRISTIANO C. GIACOMELLI

Visegrád

Conferencia; BiPoCo 2014 2nd International Conference on Bio-based Polymers and Composites; 2014

Laboratory of Plastics and Rubber Technology, Budapest University of Technology and Economics

In the last decades, non-isothermal crystallization of commercial polymers has drawn considerable attention in both polymer and engineering fields since this study approaches more closely to the industrial conditions for polymer processing, such as extrusion, molding, and melt spinning of synthetic fibers. In this work, model poly(ε-caprolactone) PCL and block copolymers of PCL and poly(hydroxyethyl methacrylate) (PHEMA) with controlled molar mass were obtained. Non-isothermal crystallization analysis was performed, and the crystalli-zation kinetics was evaluated by using Ozawa´s method. The influence of a PCL linear block copolymerized with a PHEMA grafted chain was studied. Preliminary results indicated that non-isothermal crystallization rates of copolymers gradually decreased, compared to the linear PCL, with the increase of the number of branching points