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Biodegradable polymers from renewable resources: Effect of proteinic impurity on polycondensation products of 2-hydroxypropanoic acid

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dc.title Biodegradable polymers from renewable resources: Effect of proteinic impurity on polycondensation products of 2-hydroxypropanoic acid en
dc.contributor.author Poljanšek, Ida
dc.contributor.author Kucharczyk, Pavel
dc.contributor.author Sedlařík, Vladimír
dc.contributor.author Kašpárková, Věra
dc.contributor.author Šalaková, Alexandra
dc.contributor.author Drbohlav, Jan
dc.relation.ispartof Materiali in Tehnologije
dc.identifier.issn 1580-2949 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2011
utb.relation.volume 45
utb.relation.issue 3
dc.citation.spage 265
dc.citation.epage 268
dc.type article
dc.language.iso en
dc.publisher Institut za Kovinske Materiale in Tehnologije Ljubljana sl
dc.relation.uri http://mit.imt.si/Revija/mit113.html
dc.subject poly(lactic acid) en
dc.subject whey protein en
dc.subject polycondensation en
dc.subject impurity effect en
dc.description.abstract 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. en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1002191
utb.identifier.rivid RIV/70883521:28110/11:43865317!RIV12-MSM-28110___
utb.identifier.rivid RIV/70883521:28610/11:43865317!RIV12-MSM-28610___
utb.identifier.obdid 43865319
utb.identifier.scopus 2-s2.0-79957993198
utb.identifier.wok 000291170700017
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:38Z
dc.date.available 2011-08-16T15:06:38Z
dc.rights.uri http://mit.imt.si/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Kucharczyk, Pavel
utb.contributor.internalauthor Sedlařík, Vladimír
utb.contributor.internalauthor Kašpárková, Věra
utb.fulltext.affiliation Ida Poljanšek1, 2, Pavel Kucharczyk3,Vladimír Sedlařík3,4*, Věra Kašpárková5, Alexandra Šalaková6, Jan Drbohlav6 1 Center of Excellence for Polymer Materials and Technologies, Tehnološki park 24, SI-1000 Ljubljana, Slovenia 2 Biotechnical Faculty, Department of Wood Technology, University of Ljubljana, Jamnikarjeva ul. 101, SI-1000 Ljubljana, Slovenia 3 Centre of Polymer Systems, Polymer Centre, Tomas Bata University in Zlin, nam. T. G. Masaryka 5555, 760 01 Zlin, Czech Republic 4 Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia 5 Department of Fat, Tenside and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, nam. T. G. Masaryka 275, 76272 Zlin, Czech Republic 6 Dairy Research Institute, Milcom a.s. Ke Dvoru 12a, 16000 Prague, Czech Republic sedlarik@ft.utb.cz
utb.fulltext.dates Prejem rokopisa – received: 2011-02-13; sprejem za objavo – accepted for publication: 2011-03-05
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utb.fulltext.sponsorship This research was financially supported by the Ministry of Education, Youth and Sports of the Czech Republic (project No. 2B08071) and Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund (ERDF, project No. CZ.1.05/2.1.00/03.0111). The authors acknowledge the financial support from the Ministry of Higher Education, Science and Technology of the Republic of Slovenia through the contract No. 3211-10-000057 (Center of Excellence for Polymer Materials and Technologies). Furthermore, this work was also co-supported by the Ministry of Higher Education, Science and Technology of the Republic of Slovenia (programme P4-0015) and Slovenian Research Agency (ARRS) and Science and Education Foundation of the Republic of Slovenia within the "Ad futura" programme.
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