Nanocomposites with biodegradable polycaprolactone matrix

0481517 - ÚMCH 2018 DE eng J - Journal Article
Janigová, I. - Lednický, František - Jochec-Mošková, D. - Chodák, I.
Nanocomposites with biodegradable polycaprolactone matrix.
Macromolecular Symposia. Roč. 301, č. 1 (2011), s. 1-8. ISSN 1022-1360.
[Eurofillers /8./. Alessandria, 21.06.2009-25.06.2009]
Institutional research plan: CEZ:AV0Z40500505
Keywords : melt mixing * nanocomposites * organoclay
Subject RIV: CD - Macromolecular Chemistry

Biodegradable polymer/clay nanocomposites and/or composites based on poly(ε-polycaprolactone) (PCL) were prepared by conventional melt mixing. Three kinds of clays, organomodified Cloisite 15A and Cloisite 10A with different ammonium cations located in the silicate gallery and unmodified Cloisite with Na cations were used for composites preparation. The degree of dispersion of silicate layers in the matrix was determined by X-ray diffraction and transmission electron microscopy. Oscillatory rheological measurements were used for characterization of the physical network formed by the filler. The presence of intercalated and exfoliated structures were observed for the composites PCL/Cloisite 15A and PCL/Cloisite 10A, indicating that nanocomposite structure was formed. Changes of viscoelastic properties to more solid-like behavior, especially in the low frequency range were explained by formation of silicate network structure, which can be detected by modified Cole-Cole plots.
Permanent Link: http://hdl.handle.net/11104/0277585