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Št. zadetkov: 4
A novel approach for qualitative determination of residual tin based catalyst in poly(lactic acid) by X-Ray photoelectron spectroscopy
Vladimír Sedlarik, Alenka Vesel, Pavel Kucharczyk, Pavel Urbánek
Izvirni znanstveni članek
Oznake: poly(lactic acid);citalyst residuals;tin;X-ray photoelectron spectroscopy;fluorimetry;
This work is focused on description of qualitative determination of residual tin based catalysts in poly(lactic acid) by using X-ray photoelectron spectroscopy and fluorimetry as standard technique. Three types of poly(lactic acid) were prepared by direct melt polycondensation of lactic acid by usin ...
Leto: 2011 Vir: dLib.si Digitalna knjižnica Slovenije
Enhancement of molecular weight of L-lactic acid polycondensates under vacuum in solid state
Pavel Kucharczyk, Vladimir Sedlařik, Ita Junkar, Darij Kreuh, Petr Sáha
Izvirni znanstveni članek
Oznake: mlečna kislina;polikondenzacija;molekulska masa;
Enhancement of L-lactic acid polycondensates by involving of postpolycondensation reactions in solid state under vacuum and catalyzed by stannous 2-ethylhexanoate were studied in the presented work. The catalyst wasused only in postpolycondensation step. An effect of the catalyst concentration and p ...
Leto: 2012 Vir: dLib.si Digitalna knjižnica Slovenije
Biodegradable polymers from renewable resources
Ida Poljanšek, Pavel Kucharczyk, Vladimír Sedlarik, Věra Kašpárková, Alexandra Šalaková, Jan Drbohlav
Izvirni znanstveni članek
Oznake: poly(lactic acid);whey protein;polycondensation;impurity effect;
The goal of the presented work is to describe the proteinic impurity (as possible residual component from biotechnological lactic acid production from whey) in the reaction mixture with 2-hydroxypropanoic acid (lactic acid) for its direct polycondensation into poly(lactic acid). The impurity presenc ...
Leto: 2011 Vir: dLib.si Digitalna knjižnica Slovenije
Functionalization of polylactic acid through direct melt polycondensation in the presence of tricarboxylic acid
Pavel Kucharczyk, Ida Poljanšek, Vladimír Sedlarik, Vera Kasparkova, Alexandra Salakova, Jan Drbohlav, Uroš Cvelbar, Petr Sáha
Izvirni znanstveni članek
Oznake: funkcionalizirani polimeri;poliestri;sinteza;
Functionalization of polylactic acid through direct melt polycondensation in the presence of tricarboxylic acid
Leto: 2011 Vir: Biotehniška fakulteta (UL BF)
Št. zadetkov: 4
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