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Related Concept Videos

Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...

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Related Experiment Video

Updated: Jun 14, 2026

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

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

Published on: October 23, 2015

High performance shape memory polymer networks based on rigid nanoparticle cores.

Jianwen Xu1, Jie Song

  • 1Department of Orthopedics and Physical Rehabilitation, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655, USA.

Proceedings of the National Academy of Sciences of the United States of America
|April 9, 2010
PubMed
Summary
This summary is machine-generated.

New shape memory polymers offer tunable properties for biomedical applications. These advanced materials provide rapid shape recovery and hold promise for tissue engineering scaffolds and implants.

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Shape Memory Polymers for Active Cell Culture
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Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

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Last Updated: Jun 14, 2026

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Shape Memory Polymers for Active Cell Culture
10:53

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

Area of Science:

  • Biomedical Science
  • Materials Science
  • Polymer Chemistry

Background:

  • Smart materials responding to external stimuli are crucial in biomedical science.
  • Thermal-responsive shape memory polymers (SMPs) offer potential for self-fitting tissue scaffolds and implants due to their ability to recover original shapes on demand.
  • Achieving optimal properties like physiological transition temperature, rapid recovery, and suitable mechanical/biological characteristics in SMPs remains challenging.

Purpose of the Study:

  • To develop novel shape memory polymer networks with properties suitable for clinical applications.
  • To investigate the potential of polyhedral oligomeric silsesquioxane (POSS) nanoparticle-cored macromers for creating advanced SMPs.

Main Methods:

  • Synthesized a shape memory polymer network using a POSS nanoparticle core functionalized with eight polyester arms.
  • Characterized the network's transition temperature (T(trans)), mechanical properties (storage modulus), shape recovery speed, and stability.
  • Evaluated the material's biodegradability and biofunctionalizability.

Main Results:

  • The cross-linked networks exhibited a gigapascal-level storage modulus at body temperature.
  • The T(trans) ranged from 42 to 48 degrees C, suitable for physiological applications.
  • Materials demonstrated stable shape retention for over a year at room temperature and achieved full shape recovery below 51 degrees C within seconds.
  • Tunable biodegradability and biofunctionalizability were achieved.

Conclusions:

  • The developed POSS-based SMPs possess a promising combination of properties for biomedical applications.
  • These materials show significant potential for use in minimally invasive, self-fitting tissue engineering scaffolds and implants.
  • The tunable nature of these SMPs allows for customization to meet specific clinical requirements.