Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends

A two-step compounding procedure was used to produce binary blends composed of poly(lactic acid) (PLA)  and thermoplastic starch (TPS) with varying component ratios. Subsequently, three different chemical connectors were introduced in order to enhance the interfacial adhesion between the PLA and the...

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Main Authors: László Lendvai, Dávid Brenn
Format: Article
Language:English
Published: Széchenyi István University 2020-02-01
Series:Acta Technica Jaurinensis
Subjects:
Online Access:https://acta.sze.hu/index.php/acta/article/view/532
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author László Lendvai
Dávid Brenn
author_facet László Lendvai
Dávid Brenn
author_sort László Lendvai
collection DOAJ
description A two-step compounding procedure was used to produce binary blends composed of poly(lactic acid) (PLA)  and thermoplastic starch (TPS) with varying component ratios. Subsequently, three different chemical connectors were introduced in order to enhance the interfacial adhesion between the PLA and the TPS. Maleic anhydride, blocked isocyanate, and chain extender were used as coupling agents. Mechanical, morphological and thermal properties of PLA/TPS blends were determined. It was revealed that the initial interfacial adhesion between the components is weak. Out of the three coupling agents introduced, the chain extender proved to be the most effective, however, the improvement achieved in the mechanical properties was still marginal. According to the thermogravimetric analysis thermal stability was not significantly affected by any of the coupling agents.
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spelling doaj.art-9abc9280cfd84aff95917f5f07eca53a2022-12-21T23:26:05ZengSzéchenyi István UniversityActa Technica Jaurinensis2064-52282020-02-0113111310.14513/actatechjaur.v13.n1.532532Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch BlendsLászló Lendvai0Dávid Brenn1Széchenyi István University, Department of Materials Science and Engineering, Egyetem tér 1, H-9026 Győr, Hungary / Budapest University of Technology and Economics, Department of Polymer Engineering, Műegyetem rkp. 3, H-1111 Budapest, HungaryBudapest University of Technology and Economics, Department of Polymer Engineering, Műegyetem rkp. 3, H-1111 Budapest, HungaryA two-step compounding procedure was used to produce binary blends composed of poly(lactic acid) (PLA)  and thermoplastic starch (TPS) with varying component ratios. Subsequently, three different chemical connectors were introduced in order to enhance the interfacial adhesion between the PLA and the TPS. Maleic anhydride, blocked isocyanate, and chain extender were used as coupling agents. Mechanical, morphological and thermal properties of PLA/TPS blends were determined. It was revealed that the initial interfacial adhesion between the components is weak. Out of the three coupling agents introduced, the chain extender proved to be the most effective, however, the improvement achieved in the mechanical properties was still marginal. According to the thermogravimetric analysis thermal stability was not significantly affected by any of the coupling agents.https://acta.sze.hu/index.php/acta/article/view/532thermoplastic starchpoly(lactic acid)compatibilizationpolymer blend
spellingShingle László Lendvai
Dávid Brenn
Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends
Acta Technica Jaurinensis
thermoplastic starch
poly(lactic acid)
compatibilization
polymer blend
title Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends
title_full Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends
title_fullStr Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends
title_full_unstemmed Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends
title_short Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends
title_sort mechanical morphological and thermal characterization of compatibilized poly lactic acid thermoplastic starch blends
topic thermoplastic starch
poly(lactic acid)
compatibilization
polymer blend
url https://acta.sze.hu/index.php/acta/article/view/532
work_keys_str_mv AT laszlolendvai mechanicalmorphologicalandthermalcharacterizationofcompatibilizedpolylacticacidthermoplasticstarchblends
AT davidbrenn mechanicalmorphologicalandthermalcharacterizationofcompatibilizedpolylacticacidthermoplasticstarchblends