A shape memory polymer with improved shape recovery

Changdeng Liu, Patrick T. Mather

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

9 Scopus citations

Abstract

Thermally actuated shape memory polymers (SMPs) interest, both academically and industrially, due to their ability to memorize a permanent shape that is set during processing and a temporary shape that is later programmed by manipulation above a critical temperature, either Tg or T m. However, the thermal triggering process for SMPs is usually retarded compared to that of shape memory alloys, because the thermal conductivity of polymers is much lower (<0.30 W/m.K). In the present study, we incorporated a highly thermal conducting filler into a shape memory matrix to increase its thermal conductivity and therefore, shorten the heat transfer progress. A mathematical was worked out that quantitatively relates the material's thermal conductivity with the heat transfer time, τ, also defined as a shape memory induction time. The model fit nicely with our experimental data. In addition, mechanical reinforcement was observed with the addition of this rigid thermal conducting filler.

Original languageEnglish (US)
Title of host publicationMechanically Active Materials
Pages112-117
Number of pages6
StatePublished - Dec 1 2004
Event2004 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 29 2004Dec 3 2004

Publication series

NameMaterials Research Society Symposium Proceedings
Volume855
ISSN (Print)0272-9172

Other

Other2004 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/29/0412/3/04

ASJC Scopus subject areas

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

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  • Cite this

    Liu, C., & Mather, P. T. (2004). A shape memory polymer with improved shape recovery. In Mechanically Active Materials (pp. 112-117). (Materials Research Society Symposium Proceedings; Vol. 855).