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August 22, 2026Journal of Applied Polymer Science

Development and Characterization of TPS / LDPE Blends and Composites Reinforced With Açaí Fibers: Structural, Mechanical, Photodegradation and Biodegradation Properties

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Authors

JMJuliana Farinassi MendesBrazilian Agricultural Research CorporationNNNayra Diniz NogueiraUniversidade Federal de LavrasCNCarolina Rezende Pinto NarcisoUniversidade Federal de Itajubá

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Overview

Experimental study demonstrates enhanced mechanical strength and photostability in starch-polyethylene composites reinforced with açaí fibers, suggesting a viable eco-friendly plastic alternative.

Key Points

  • To develop and evaluate the structural, mechanical, photodegradation, and biodegradation properties of thermoplastic starch and low-density polyethylene blends reinforced with açaí fibers.
  • Blended thermoplastic starch (TPS) with low-density polyethylene (LDPE) and açaí fibers (AF) using maleic anhydride (MA) as a compatibilizer.
  • Processed materials via extrusion and compression molding followed by physicochemical, mechanical, thermal, SEM, photodegradation, and biodegradation characterization.
  • The composites exhibited increased crystallinity, thermal stability, tensile strength, and elastic modulus alongside partially hydrophobic behavior.
  • Açaí fibers provided photoprotection against UV degradation due to lignin content, and materials achieved mass losses between 44% and 65% after 816 hours of biodegradation.

Cite This Study

Mendes et al. (2026) studied this question.

synapsesocial.com/papers/6a895effca7ade938187d476https://doi.org/10.1002/app.71335
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