About: Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid

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About: Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid Goto Sponge Distinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The purpose of the presented work is to examined the effect of calcium based inorganic impurity originating from biotechnological L-lactic acid production from cheese whey on synthesis of poly(L-lactic acid). The influence of impurity was investigated in the range of 0 to 1 wt. % and the changes in molecular weight, melting and glass transition temperatures were studied by the analytical technique gel permeation chromatography and differential scanning calorimetry. Results show moderate reduction of molecular weight with rising amount of the impurity up to 0.75 wt. %. The higher concentration caused high extend of decomposition reaction and no yield was obtained. The thermal properties investigation shows noticeable reduction of melting temperature and slight decrease in glass transition temperature. The results revealed significant role of purification of lactic acid before its polycondensation to high molecular weight polymer. The purpose of the presented work is to examined the effect of calcium based inorganic impurity originating from biotechnological L-lactic acid production from cheese whey on synthesis of poly(L-lactic acid). The influence of impurity was investigated in the range of 0 to 1 wt. % and the changes in molecular weight, melting and glass transition temperatures were studied by the analytical technique gel permeation chromatography and differential scanning calorimetry. Results show moderate reduction of molecular weight with rising amount of the impurity up to 0.75 wt. %. The higher concentration caused high extend of decomposition reaction and no yield was obtained. The thermal properties investigation shows noticeable reduction of melting temperature and slight decrease in glass transition temperature. The results revealed significant role of purification of lactic acid before its polycondensation to high molecular weight polymer. (en)
Title	Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid (en)
skos:prefLabel	Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid (en)
skos:notation	RIV/70883521:28110/12:43869203!RIV13-MSM-28110___
http://linked.open...avai/predkladatel	Fakulta technologická
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(ED2.1.00/03.0111), S
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kucharczyk, Pavel Sedlařík, Vladimír Koutný, Marek Stloukal, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Fakulta technologická
http://linked.open...dnocenehoVysledku	125005
http://linked.open...ai/riv/idVysledku	RIV/70883521:28110/12:43869203
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polylactide, lactic acid, impurity (en)
http://linked.open.../riv/klicoveSlovo	impurity lactic acid polylactide
http://linked.open...ontrolniKodProRIV	[B2031A2F0C34]
http://linked.open...v/mistoKonaniAkce	Zlín
http://linked.open...i/riv/mistoVydani	Zlín
http://linked.open...i/riv/nazevZdroje	Advances in Environment, Biotechnology and Biomedicine
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Polymer Systems
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Koutný, Marek Kucharczyk, Pavel Sedlařík, Vladimír Stloukal, Petr
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-09-20 (xsd:date)
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Univerzita Tomáše Bati ve Zlíně
https://schema.org/isbn	978-1-61804-125-8
http://localhost/t...ganizacniJednotka	28110
is http://linked.open...avai/riv/vysledek of	Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid

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