Biodegradable polymers from renewable resources: Effect of proteinic impurityon polycondensation products of 2-hydroxypropanoic acid
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F11%3A43865317" target="_blank" >RIV/70883521:28110/11:43865317 - isvavai.cz</a>
Alternative codes found
RIV/16193296:_____/11:MJIMPU11 RIV/70883521:28610/11:43865317
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 proteinic impurityon polycondensation products of 2-hydroxypropanoic acid
Original language description
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 presence study was carried out in the range from mass fractions 0 % up to 2 %. For an evaluation of the impurity effect on the values of molecular weight, melting and glass transition temperatures the measurements of intrinsic viscosity, gel permeation chromatography and differential scanning calorimetry were used. Results show slight reduction of molecular weight and increase in polydispersity with rising amount of the impurity. The thermal properties investigation shows noticeable reduction of melting temperature and moderate decrease in glass transition temperature. The results reveal considerable role of lactose on formation of structural irregularities in lactic acid polycondensates.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
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)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materiali in Tehnologije
ISSN
1580-2949
e-ISSN
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Volume of the periodical
45
Issue of the periodical within the volume
3
Country of publishing house
SI - SLOVENIA
Number of pages
4
Pages from-to
265-268
UT code for WoS article
000291170700017
EID of the result in the Scopus database
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