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Polymers

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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...

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Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...

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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...

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Updated: Feb 16, 2026

Shape Memory Polymers for Active Cell Culture

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

A Facile and General Approach to Recoverable High-Strain Multishape Shape Memory Polymers.

Xingjian Li^1,2, Yi Pan¹, Zhaohui Zheng¹

¹Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China.

Macromolecular Rapid Communications

|January 3, 2018

Summary

This summary is machine-generated.

Researchers developed a new shape memory polymer using random copolymerization. This material offers tunable high-strain multiple-shape memory effects and 1000% recoverable strain in a single network.

Keywords:

highly recoverable strain multishape memory effects shape memory polymers wide glass transition

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Last Updated: Feb 16, 2026

Shape Memory Polymers for Active Cell Culture

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Published on: July 4, 2011

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

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Published on: October 23, 2015

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Area of Science:

Materials Science
Polymer Chemistry

Background:

Achieving tunable high-strain multiple-shape memory effects and high recoverability in single polymer networks is challenging for advanced shape memory devices.
Current multishape shape memory polymers often require complex structural designs.

Purpose of the Study:

To present a facile and general approach for creating recoverable high-strain multishape shape memory polymers.
To overcome the limitations of existing materials in terms of complexity and performance.

Main Methods:

Random copolymerization of acrylate monomers.
Incorporation of a chain-extended multiblock copolymer crosslinker.

Main Results:

The synthesized shape memory networks exhibit a significantly broader glass transition range compared to classical multishape polymers.
The material demonstrates a tunable high-strain multishape memory effect.
Recoverable strain as high as 1000% was achieved within a single chemical-crosslinking network.

Conclusions:

This work introduces a novel thermosetting material with a unique combination of highly recoverable strain and tunable high-strain multiple-shape memory effects.
The developed method offers a simplified route to advanced shape memory polymers with enhanced properties.