Magnetic field actuation of shape memory nanocomposites

Atefeh Golbang, Mehrdad Kokabi

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

8 Citations (Scopus)

Abstract

Shape memory polymers are stimuli-responsive materials able to adaptively store a temporary (deformed) shape and recover a 'memorized' permanent shape under an external stimulus. In shape-memory polymers, changes in shape are mostly induced by heating, and exceeding a specific switching temperature, Tswitch. If polymers cannot be warmed up by heat transfer using a hot liquid or gaseous medium, noncontact triggering will be required. In this article, the magnetically induced shape-memory effect of composites from NdFeB magnetic particles and crosslinked low density polyethylene (XLDPE) shape memory nanocomposite containing 2 wt% nanoclay is introduced. Various amounts of NdFeB particles (5, 15, 40 wt %) were added to the nanocomposite. Electromagnetically triggered shape memory properties of the formed composites were conducted using an alternative magnetic field with a frequency of 9 kHz and strength of 15 kW. The shape recovery of samples was possible by inductive heating and the shape recovery rates comparable to those obtained by conventional heating methods were demonstrated. It was concluded that the maximum heat generation achievable by inductive heating in the alternative magnetic field depends on magnetic particle content. The sample containing 15wt% NdFeB reached a full shape recovery of 25% extension within 6 minutes remaining in the magnetic field.

Original languageEnglish
Title of host publicationMulti-Functional Materials and Structures III
Pages999-1002
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2010
Event3rd International Conference on Multi-Functional Materials and Structures, MFMS 2010 - Jeonju, Korea, Republic of
Duration: 14 Sep 201018 Sep 2010

Publication series

NameAdvanced Materials Research
Volume123-125
ISSN (Print)1022-6680

Conference

Conference3rd International Conference on Multi-Functional Materials and Structures, MFMS 2010
CountryKorea, Republic of
CityJeonju
Period14/09/1018/09/10

Keywords

  • Alternative magnetic field
  • Heat induction
  • Magnetic particles
  • NdFeB
  • Shape memory nanocomposites
  • XLDPE

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  • Cite this

    Golbang, A., & Kokabi, M. (2010). Magnetic field actuation of shape memory nanocomposites. In Multi-Functional Materials and Structures III (pp. 999-1002). (Advanced Materials Research; Vol. 123-125). https://doi.org/10.4028/www.scientific.net/AMR.123-125.999