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Related Experiment Video

Updated: Dec 24, 2025

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
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A biodegradable functional water-responsive shape memory polymer for biomedical applications.

Yifan Guo1, Ziying Lv, Yiru Huo

  • 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, People's Republic of China. zyou@dhu.edu.cn.

Journal of Materials Chemistry. B
|April 8, 2020
PubMed
Summary
This summary is machine-generated.

A new water-responsive shape memory polymer (SMP), poly(butanetetrol fumarate) (PBF), was developed for biomedical uses. This biocompatible PBF material offers high shape recovery and supports bone cell growth, making it ideal for in vivo applications.

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Regenerative Medicine

Background:

  • Shape memory polymers (SMPs) show promise for biomedical applications.
  • Conventional triggers (heat, UV, electricity) for SMPs can be harmful in vivo.
  • Water-responsive SMPs are desirable for in vivo use due to biocompatibility and water availability, but existing options are limited and complex.

Purpose of the Study:

  • To design and characterize a novel, simple water-responsive shape memory polymer (SMP).
  • To evaluate the suitability of this new SMP for biomedical applications, focusing on its properties and biological interactions.

Main Methods:

  • Synthesis of poly(butanetetrol fumarate) (PBF) as a water-responsive SMP.
  • Modulation of PBF properties through curing.
  • Assessment of shape recovery and fixity rates.
  • Evaluation of biodegradability and osteoblast response (attachment, viability, alkaline phosphatase activity).
  • Functionalization of PBF via pendant hydroxyl groups for controlled protein release.

Main Results:

  • Cured PBF scaffolds demonstrated high shape recovery and fixity rates exceeding 95%.
  • PBF exhibited favorable biodegradability.
  • The material effectively supported osteoblast attachment, viability, and alkaline phosphatase activity.
  • PBF was successfully functionalized for immobilization and controlled release of bone morphogenetic protein 2.

Conclusions:

  • Poly(butanetetrol fumarate) (PBF) is a promising new water-responsive SMP with tunable properties.
  • PBF demonstrates excellent shape memory performance, biocompatibility, and osteogenic support.
  • The functionalizability of PBF opens avenues for advanced biomedical applications such as scaffolds, sensors, and actuators.