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Related Experiment Video

Updated: Aug 23, 2025

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

A Multiple Remotely Controlled Platform from Recyclable Polyurethane Composite Network with Shape-Memory Effect and

Xiaohu Chen^1,2, Xiyang Zeng², Kun Luo²

¹Department of Biomedical Engineering, School of Big Health and Intelligent Engineering, Chengdu Medical College, Chengdu, Sichuan, 610500, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)

|October 31, 2022

Summary

This summary is machine-generated.

This study introduces a recyclable, remotely controlled shape-changing polyurethane composite with self-healing abilities. Incorporating magnetite nanoparticles and disulfide bonds enhances its durability and reusability for advanced applications.

Keywords:

alternating magnetic fields near-infrared irradiation remotely controlled platforms self-healing property shape-memory effect

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Shape Memory Polymers for Active Cell Culture

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Last Updated: Aug 23, 2025

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

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Published on: October 23, 2015

A Testing Platform for Durability Studies of Polymers and Fiber-reinforced Polymer Composites under Concurrent Hygrothermo-mechanical Stimuli

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Shape Memory Polymers for Active Cell Culture

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

Area of Science:

Materials Science
Polymer Chemistry
Nanotechnology

Background:

Stimuli-responsive materials offer shape-changing capabilities but suffer from damage and reduced lifespan in complex environments.
Developing durable, repairable, and recyclable smart materials is crucial for advanced technological applications.

Purpose of the Study:

To develop a recyclable, remotely controlled shape-changing polyurethane composite with self-healing properties.
To investigate the effect of magnetite nanoparticles and disulfide bonds on material performance and recyclability.

Main Methods:

Synthesis of polyurethane composite using polyethylene glycol, polytetrahydrofuran diol, and isophorone diisocyanate.
Incorporation of magnetite nanoparticles (MNPs) for remote heating via near-infrared irradiation and alternating magnetic fields.
Introduction of disulfide bonds to enhance self-healing capabilities, analyzed through tensile tests, SEM, and optical microscopy.

Main Results:

Uniform distribution of MNPs enabled tunable temperature changes and varied shape recovery rates under different stimuli.
Efficient and rapid self-healing was achieved due to the disulfide bond integration.
Synergistic effects of transesterification and disulfide bond exchange ensured network reproducibility for recycling.

Conclusions:

The developed polyurethane composite exhibits excellent remote controllability, self-healing, and recyclability.
This smart material shows significant promise as an alternative for soft robots and smart sensors.