Cited by 249Polymer composites and self-healingAdvanced Materials and MechanicsHydrogels: synthesis, properties, applications

High‐Strain Shape‐Memory Polymers

Voit, Walter, Ware, Taylor, Dasari, Raghunath R., Smith, Paul, Danz, Lauren, Simon, Dustin, Barlow, Stephen, Marder, Seth R. +1 more·2010·Advanced Functional Materials

Abstract

Shape‐memory polymers (SMPs) are self‐adjusting, smart materials in which shape changes can be accurately controlled at specific, tailored temperatures. In this study, the glass transition temperature (Tg) is adjusted between 28 and 55 °C through synthesis of copolymers of methyl acrylate (MA), methyl methacrylate (MMA), and isobornyl acrylate (IBoA). Acrylate compositions with both crosslinker densities and photoinitiator concentrations optimized at fractions of a mole percent demonstrate fully recoverable strains at 807% for a Tg of 28 °C, at 663% for a Tg of 37 °C, and at 553% for a Tg of 55 °C. A new compound, 4,4′‐di(acryloyloxy)benzil (referred to hereafter as Xini) in which both polymerizable and initiating functionalities are incorporated in the same molecule, was synthesized and polymerized into acrylate shape‐memory polymers, which were thermomechanically characterized yielding fully recoverable strains above 500%. The materials synthesized in this work were compared to an industry standard thermoplastic SMP, Mitsubishi's MM5510, which showed failure strains of similar magnitude, but without full shape recovery: residual strain after a single shape‐memory cycle caused large‐scale disfiguration. The materials in this study are intended to enable future applications where both recoverable high‐strain capacity and the ability to accurately and independently position Tg are required.

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Crossref · 10.1002/adfm.200901409

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Authors
Voit, W., Ware, T., Dasari, R. R., Smith, P., Danz, L., Simon, D., Barlow, S., Marder, S. R., & Gall, K.
Affiliations
Georgia Institute of Technology (US)
Corresponding author
  • Voit, Walter
  • Gall, Ken
Venue
Advanced Functional Materials
Publisher
Wiley
Published
2009-12-28
Volume
20
Issue
1
Pages
162-171
ISSN
  • 1616-301X (ISSN-L)
  • 1616-3028
OpenAlex
W2105748029
Cited by
247
References
30
Citations by year
2026: 10 · 2025: 6 · 2024: 7 · 2023: 8 · 2022: 18 · 2021: 18 · 2020: 18 · 2019: 18 · 2018: 15 · 2017: 28 · 2016: 18 · 2015: 16 · 2014: 16 · 2013: 17 · 2012: 16
FWCI
9.54
Type
journal article
Language
en
Open access
closed
Locations
Advanced Functional Materials (publishedVersion)
Funders
National Science Foundation
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
Keywords
shape memory polymers, glass transition temperature, methyl acrylate, methyl methacrylate, isobornyl acrylate, acrylate copolymers, photoinitiator concentration, thermomechanical characterization, residual strain, smart materials

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