Thermomechanical behaviour of biodegradable shape-memory polymer foams

Samy A. Madbouly, Karl Kratz, Frank Klein, Karola Lützow, Andreas Lendlein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Shape-memory polymer foams based on poly(ω-pentadecalactone) (PPDL) and poly(ε-caprolactone) (PCL) multiblock copolymer with 60 wt% PCL content were prepared by environmentally-friendly high pressure supercritical carbon dioxide (scCO2) foaming technique. A foam with a density of approximately 0.11 ± 0.02 g/cm3 and an average pore size of 150-200 μm with excellent compressibility and shape-memory properties was created at 25 bar/s depressurization rate in the temperature range between 78 and 84 °C. The shape-memory behavior of this foam was investigated using different programming modules, such as under stress-free condition and under constant strain condition. The thermally-induced shape-memory effect (SME) was found to be strongly dependent on the programming conditions. Excellent shape fixity has been observed for all foams indicating the high efficiency of the switching domains to fix the temporary shape by crystallization. The stress recovery of this foam could be controlled by changing compression percentage (εc%) at a constant compression temperature. The production of these foams with unprecedented properties by commercially available processing equipment raises much hope with the potential to provide new materials with a unique combination of shape-memory properties and porous structure as well as desired properties for many industrial and biomedical applications

Original languageEnglish (US)
Title of host publicationActive Polymers
PublisherMaterials Research Society
Pages99-104
Number of pages6
ISBN (Print)9781605111636
DOIs
StatePublished - Jan 1 2009
Event2009 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 14 2009Apr 16 2009

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1190
ISSN (Print)0272-9172

Other

Other2009 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/14/094/16/09

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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