Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F12%3A43869059" target="_blank" >RIV/70883521:28110/12:43869059 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/12:43869059
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Biodegradable polymers from renewable resources: Effect of calcium inorganic impurity on polycondensation products of 2-L-hydroxy propanoic acid
Original language 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 inthe 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 andslight decrease in glass transition temperature. The results revealed significant role of purification of lactic acid before its polycondensation to high molecular weight polymer.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Advances in Environment, Biotechnology and Biomedicine
ISBN
978-1-61804-122-7
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
267-271
Publisher name
WSEAS Press
Place of publication
Praha
Event location
Zlín
Event date
Sep 20, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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