Micro and Nano Fibrillar Composites (MFCs and NFCs) from Polymer Blends

0481197 - ÚMCH 2018 RIV NL eng M - Monography Chapter
Kelnar, Ivan
Synthesis, characterization, and applications of biodegradable microfibrillar and nanofibrillar composites.
Micro and Nano Fibrillar Composites (MFCs and NFCs) from Polymer Blends. Amsterdam: Woodhead Publishing, Elsevier, 2017 - (Thomas, S.; Mishra, R.; Kalarikkal, N.), s. 113-124. ISBN 978-00-8101-991-7
R&D Projects: GA ČR(CZ) GA13-15255S
Institutional support: RVO:61389013
Keywords : biodegradable polymers * poly (.epsilon.-caprolactone) * poly (lactic acid)
OECD category: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics

The microfibrillar composite (MFC) concept has a good potential to get biodegradable materials with enhanced performance. However, in many cases, systems incapable of thermoplastic processing applied in the form of drawn blend-based ribbons have been reported. Here, membranes and films can be prepared by careful compression molding of knitted ribbons. The MFC concept has also been used for preparation of PLA microfibres by matrix extraction from the drawn product. At the same time, limited drawability and unstable extrusion do not allow MFC preparation from some suitable biodegradable blends. The complex improvement of the PCL/PLA system by nanofillers indicates good applicability of nanoparticles to modify biodegradable polymers-based MFC resulting in dual reinforcement and improvement of drawability. Increased PLA crystallinity during subsequent processing and practical elimination of cold crystallization is another advantage of the MFC concept in the PCL/PLA system.
Permanent Link: http://hdl.handle.net/11104/0277721