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Related Concept Videos

Bioplastics01:27

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...

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Biosourced Multiphase Systems Based on Poly(Lactic Acid) and Polyamide 11 from Blends to Multi-Micro/Nanolayer

Nour Jaouadi1,2, Mohamed Jaziri3, Abderrahim Maazouz1

  • 1CNRS, UMR 5223, Ingénierie des Matériaux Polymères, INSA Lyon, Université Claude Bernard Lyon 1, Université Jean Monnet, F-69621 Villeurbanne, France.

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|December 9, 2023
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This study explores polylactic acid (PLA) and polyamide 11 (PA11) blends and multilayers. Compatibilizing agents like Joncryl improve interfacial properties, enabling advanced polymer applications.

Keywords:
PA11PLAcoextrusioncompatibilizationmiscibilitymorphologyrheology

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Area of Science:

  • Polymer Science
  • Materials Science
  • Materials Engineering

Background:

  • Polylactic acid (PLA) and polyamide 11 (PA11) are important biopolymers.
  • Developing compatible blends and multilayers is crucial for advanced material applications.

Purpose of the Study:

  • To investigate multiphase systems of PLA and PA11, from blends to multilayers.
  • To understand the role of compatibilizers in improving interfacial properties.
  • To explore the structure-property relationships in coextruded multilayer polymers.

Main Methods:

  • Reactive extrusion to create compatibilized PLA/PA11 blends.
  • Characterization of thermal, morphological, rheological, and mechanical properties.
  • Forced-assembly multilayer coextrusion to fabricate multilayered systems.

Main Results:

  • Joncryl effectively compatibilized PLA/PA11 blends, reducing particle size and interfacial tension.
  • Compatibilized blends exhibited ductile behavior in tensile tests.
  • Interdiffusion and diffuse interphase formation were clarified in multilayer systems.

Conclusions:

  • Compatibilization is key to controlling interfacial properties in PLA/PA11 systems.
  • Understanding interfacial phenomena is essential for designing advanced multilayer polymers.
  • These findings facilitate the use of tailored PLA/PA11 systems in advanced applications.