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Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
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PLA/PHB Blends: Biocompatibilizer Effects.

Alessandra D'Anna1, Rossella Arrigo1, Alberto Frache2

  • 1Department of Applied Science and Technology, Viale Teresa Michel 5, 15121 Alessandria, Italy.

Polymers
|August 31, 2019
PubMed
Summary
This summary is machine-generated.

This study enhanced bio-based blends of polylactic acid (PLA) and poly-hydroxy butyrate (PHB) using liquid surfactants and block copolymers. The liquid surfactant improved blend properties and microstructure more effectively.

Keywords:
HDTPHBPLAnatural additivespolymer blends

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Area of Science:

  • Polymer Science
  • Materials Science
  • Biomaterials Engineering

Background:

  • Polylactic acid (PLA) and poly-hydroxy butyrate (PHB) are immiscible bio-based polymers.
  • Improving miscibility is key to developing high-performance bio-based blends.

Purpose of the Study:

  • To formulate a fully bio-based blend of PLA and PHB with enhanced properties.
  • To investigate the effectiveness of two different compatibilizers in improving blend miscibility and performance.

Main Methods:

  • Formulation of PLA/PHB blends with an ethylene oxide/propylene oxide block copolymer and a mixture of liquid surfactants.
  • Evaluation of blend morphology, thermal, mechanical, and rheological properties.
  • Comparative analysis of compatibilizer effects on blend microstructure and properties.

Main Results:

  • Liquid surfactants were more effective than block copolymers in refining blend morphology.
  • Both compatibilizers increased the crystallinity content of the blends.
  • Compatibilized blends showed significantly increased elastic modulus and heat deflection temperature (HDT) values.

Conclusions:

  • Compatibilizers, particularly liquid surfactants, can significantly enhance the properties of PLA/PHB bio-based blends.
  • Improved morphology and crystallinity contribute to superior mechanical performance.
  • These findings offer a pathway for developing advanced sustainable materials.