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Influence of natural inorganic impurity on the synthesis of poly(L -lactic acid), properties and nanofabrication

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dc.title Influence of natural inorganic impurity on the synthesis of poly(L -lactic acid), properties and nanofabrication en
dc.contributor.author Kucharczyk, Pavel
dc.contributor.author Urbánková, Miroslava
dc.contributor.author Stloukal, Petr
dc.contributor.author Koutný, Marek
dc.contributor.author Sedlařík, Vladimír
dc.relation.ispartof Journal of Applied Polymer Science
dc.identifier.issn 0021-8995 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2013
utb.relation.volume 130
utb.relation.issue 1
dc.citation.spage 63
dc.citation.epage 69
dc.type article
dc.language.iso en
dc.publisher John Wiley & Sons, Inc. en
dc.identifier.doi 10.1002/app.39017
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/app.39017/pdf
dc.subject biodegradable en
dc.subject nanocrystals en
dc.subject nanoparticles en
dc.subject nanowires en
dc.subject polycondensation en
dc.subject polyesters en
dc.description.abstract This work is focused on determination of the effect of a calcium-based inorganic impurity originating from biotechnological L-lactic acid production from cheese whey on the synthesis of poly(L-lactic acid). The influence of the impurity was investigated in the range of 0 to 1 wt % and the product properties were studied by analytical techniques GPC, FTIR-ATR, acid end group analysis and DSC. The final product was used to prepare submicron particles, which were analyzed by dynamic light scattering and electron microscopy. Results show a moderate reduction in molecular weight in connection with an increase in the amount of the impurity up to 0.75 wt %. Further increase in the concentration of the impurity caused decomposition. Investigating the thermal properties reveals a noticeable reduction in the melting temperature and a slight decrease in glass transition temperature. The prepared submicron particles had a Z-average diameter of between 280 and 520 nm, depending on the emulsifying system, and the presence of the inorganic impurity seems to play no role during particle formation. © 2013 Wiley Periodicals, Inc. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003361
utb.identifier.obdid 43869976
utb.identifier.scopus 2-s2.0-84879971748
utb.identifier.wok 000321305500007
utb.identifier.coden JAPNA
utb.source j-scopus
dc.date.accessioned 2013-07-27T14:55:26Z
dc.date.available 2013-07-27T14:55:26Z
utb.contributor.internalauthor Kucharczyk, Pavel
utb.contributor.internalauthor Urbánková, Miroslava
utb.contributor.internalauthor Stloukal, Petr
utb.contributor.internalauthor Koutný, Marek
utb.contributor.internalauthor Sedlařík, Vladimír
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