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Related Experiment Video

Updated: Mar 17, 2026

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
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Multiresponsive Shape Memory Blends and Nanocomposites Based on Starch.

Valentina Sessini1,2, Jean-Marie Raquez3, Giada Lo Re3

  • 1Dipartimento di Ingegneria Civile e Ambientale, University of Perugia , Strada di Pentima 4, 05100 Terni, Italy.

ACS Applied Materials & Interfaces
|July 20, 2016
PubMed
Summary
This summary is machine-generated.

New bionanocomposites using ethylene-vinyl acetate (EVA) and thermoplastic starch (TPS) exhibit smart shape-memory effects. These materials show excellent humidity- and thermally activated shape recovery, exceeding 80% and 90% respectively.

Keywords:
humiditynanocompositeshape memorythermomechanical cyclesthermoplastic starch

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Area of Science:

  • Materials Science
  • Polymer Science
  • Nanotechnology

Background:

  • Developing smart materials with multiple responsive properties is crucial for advanced applications.
  • Ethylene-vinyl acetate (EVA) and thermoplastic starch (TPS) are common polymers with potential for blend development.

Purpose of the Study:

  • To design and investigate smart multiresponsive bionanocomposites with both humidity- and thermally activated shape-memory effects.
  • To explore the potential of blending EVA and TPS for enhanced material properties.

Main Methods:

  • Fabrication of bionanocomposite blends of EVA and TPS.
  • Performance of thermo- and humidity-mechanical cyclic experiments.
  • Utilizing induced-crystallization to activate the EVA shape memory response.

Main Results:

  • The designed bionanocomposites demonstrated significant humidity- and thermally activated shape-memory effects.
  • Shape recovery values exceeded 80% for humidity activation and 90% for thermal activation.
  • The study confirmed the excellent shape recovery capabilities of the starch-based materials.

Conclusions:

  • Smart multiresponsive bionanocomposites based on EVA/TPS blends offer promising shape-memory functionalities.
  • These materials exhibit efficient shape recovery triggered by both humidity and temperature changes.
  • The findings highlight the potential of these bionanocomposites in applications requiring adaptive and responsive materials.