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Controlled biodegradability of functionalized thermoplastic starch based materials

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dc.title Controlled biodegradability of functionalized thermoplastic starch based materials en
dc.contributor.author Nevoralová, Martina
dc.contributor.author Koutný, Marek
dc.contributor.author Ujčić, Alexandra
dc.contributor.author Horák, Pavel
dc.contributor.author Kredatusová, Jana
dc.contributor.author Šerá, Jana
dc.contributor.author Růžek, Lubomír
dc.contributor.author Růžková, Michaela
dc.contributor.author Krejčíková, Sabina
dc.contributor.author Šlouf, Miroslav
dc.contributor.author Kruliš, Zdeněk
dc.relation.ispartof Polymer Degradation and Stability
dc.identifier.issn 0141-3910 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2019
utb.relation.volume 170
dc.type article
dc.language.iso en
dc.publisher Elsevier Ltd
dc.identifier.doi 10.1016/j.polymdegradstab.2019.108995
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0141391019303234
dc.subject functionalized thermoplastic starch en
dc.subject acetylated thermoplastic starch en
dc.subject starch-maltodextrin mixture en
dc.subject biodegradation en
dc.subject morphology en
dc.description.abstract The present work focuses on the preparation and characterization of biodegradable materials based on plasticized and chemically modified starch. During the experiments, the morphology, properties and biodegradability of the starch materials were influenced by the functionalization (acetylation, propionation) of the starch, different processing procedures and the use of plasticizers. The starch materials were prepared by either solution casting or melt mixing or by the combination of the two procedures, which strongly affected the degree of the material plasticization, its homogeneity, and the final morphology. FTIR spectroscopy qualitatively proved the esterification of starch by the intensity of signals associated with esters groups. The thermogravimetric analysis confirmed a gradual reduction in the water content proportional to the acetylation of starches, as well as noticeable changes in their thermal properties at the higher degree of substitution (DS). Signal intensities and weight losses derived from FTIR and TGA, respectively, were well correlated with DS. The morphological changes of the polysaccharide materials were visualized by microscopy techniques. The biodegradation rate of prepared materials was expressed as the percentage of carbon mineralization and was significantly retarded as a function of the starch acetylation. A remarkable effect of the material processing, the presence of plasticizers, and the propionation of the starch on biodegradation has been found. © 2019 Elsevier Ltd en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1009226
utb.identifier.obdid 43880618
utb.identifier.scopus 2-s2.0-85073347476
utb.identifier.wok 000501616100002
utb.identifier.coden PDSTD
utb.source j-scopus
dc.date.accessioned 2019-11-20T10:30:31Z
dc.date.available 2019-11-20T10:30:31Z
dc.description.sponsorship Technology Agency of the Czech Republic [TE01020118]; Ministry of Education, Youth and Sports of the Czech Republic within the National Sustainability Program I [LO1507]; UTB internal grant [IGA/FT/2017/003]
utb.contributor.internalauthor Koutný, Marek
utb.contributor.internalauthor Šerá, Jana
utb.fulltext.affiliation Martina Nevoralová a*, Marek Koutný b, Aleksandra Ujčić a, Pavel Horák a, Jana Kredatusová a, Jana Šerá b, Lubomír Růžek c, Michaela Růžková d, Sabina Krejčíková a, Miroslav Slouf a, Zdeněk Kruliš a a Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 162 06, Prague, Czech Republic b Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, TGM sq. 5555, 760 01, Zlín, Czech Republic c Faculty of Agrobiology, Food and Natural Resources, Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Kamýcka 129, 165 00, Prague 6, Suchdol, Czech Republic d National Institute of Public Health, Srobarova 49/48, 100 00, Prague 10, Vinohrady, Czech Republic * Corresponding author. E-mail address: nevoralova@imc.cas.cz (M. Nevoralova).
utb.fulltext.dates Received 26 April 2019 Received in revised form 4 September 2019 Accepted 6 October 2019 Available online 8 October 2019
utb.fulltext.sponsorship The authors thank for the financial support of the Technology Agency of the Czech Republic (project No.TE01020118), the Ministry of Education, Youth and Sports of the Czech Republic within the National Sustainability Program I (project No. LO1507) and UTB internal grant (IGA/FT/2017/003).
utb.wos.affiliation [Nevoralova, Martina; Ujcic, Aleksandra; Horak, Pavel; Kredatusova, Jana; Krejcikova, Sabina; Slouf, Miroslav; Krulis, Zdenek] Czech Acad Sci, Inst Macromol Chem, Heyrovsky Sq 2, Prague 16206, Czech Republic; [Koutny, Marek; Sera, Jana] Tomas Bata Univ Zlin, Fac Technol, Dept Environm Protect Engn, TGM Sq 5555, Zlin 76001, Czech Republic; [Ruzek, Lubomir] Czech Univ Life Sci Prague, Fac Agrobiol Food & Nat Resources, Dept Microbiol Nutr & Dietet, Kamycka 129, Prague 16500 6, Suchdol, Czech Republic; [Ruzkova, Michaela] Natl Inst Publ Hlth, Srobarova 49-48, Prague 10000 10, Vinohrady, Czech Republic
utb.scopus.affiliation Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, Prague, 162 06, Czech Republic; Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, TGM sq. 5555, Zlín, 760 01, Czech Republic; Faculty of Agrobiology, Food and Natural Resources, Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6, Suchdol, 165 00, Czech Republic; National Institute of Public Health, Šrobárova 49/48, Prague 10, Vinohrady, 100 00, Czech Republic
utb.fulltext.projects TE01020118
utb.fulltext.projects LO1507
utb.fulltext.projects IGA/FT/2017/003
utb.fulltext.faculty Faculty of Technology
utb.fulltext.faculty Faculty of Technology
utb.fulltext.ou Department of Environmental Protection Engineering
utb.fulltext.ou Department of Environmental Protection Engineering
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