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

Poljanšek, Ida; Kucharczyk, Pavel; Sedlařík, Vladimír; Kašpárková, Věra; Šalaková, Alexandra; Drbohlav, Jan

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 [email protected]
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.
utb.fulltext.projects	MSM 2B08071
utb.fulltext.projects	CZ.1.05/2.1.00/03.0111
utb.fulltext.projects	3211-10-000057
utb.fulltext.projects	P4-0015