Národní úložiště šedé literatury Nalezeno 4 záznamů.  Hledání trvalo 0.00 vteřin. 
Degradation of polycaprolactone electrospun materials - methods of analysis
Havlíčková, K. ; Řezanka, M. ; Kobera, Libor ; Kuželová Košťáková, E. ; Lukáš, D. ; Jenčová, V.
Biodegradable electrospun materials are widely used for medical application. Polycaprolatone is polymer suitable for electrospinning technology and is very often used to create nanofibrous scaffolds for tissue engineering. The time to disintegration or biodegradation of such materials is very important here. However, testing is not entirely easy. It is not possible to create exactly body-like conditions in vitro. Moreover, it is not easy to find suitable analytical methods that would show exactly what happens in the nanofibrous polycaprolactone electrospun samples at certain stages of degradation, ie how the internal structure of decaying nanofibers changes. This paper describes the traditional use of methods for testing polycaprolatone nanofibers by enzymatically catalysed degradation. Morphological changes are studied using scanning electron microscope images. However, it also offers a non-traditional analysis of polycaprolactone electrospun materials using the ssNMR method.
Career in Polymers XI, Book of Abstracts
Kobera, Libor
The book of abstracts contains the summaries of all the contributions to the Career in Polymers XI., workshop organized by the Institute of Macromolecular Chemistry AS CR, in Prague, 28-29 June, 2019. This meeting was organized under the auspices of UNESCO/IUPAC course in Polymer Science, and supported by Strategy AV21.
Career in Polymers X, Book of Abstracts
Kobera, Libor
The book of abstracts contains the summaries of all the contributions to the Career in Polymers X. workshop organized by the Institute of Macromolecular Chemistry AS CR, in Prague, 22-23 June, 2018. This meeting was organized under the auspices of UNESCO/IUPAC course in Polymer Science, and supported by Strategy AV21 and Draslovka a.s.
Polymers based on chemically modified starch
Horák, Pavel ; Kruliš, Zdeněk ; Šárka, E. ; Kobera, Libor
In our research, we are developing materials based on chemical modified wheat starch ant its derivatives. The starch is esterified with various acids or acid anhydrides, e.g. acetic or propionic acid. Main goal of this work is to determine the degree of substitution, which has significant relevance in study of modified saccharides. it was done using three different techniques - acid-base titration, elemental analysis and nuclear magnetic resonance spectroscopy.

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