A novel shape memory polymer composites with grafted hydroxyapatite nanoparticles for high strength and stiffness applications

Jerald Maria Antony G., R. Sanjeeth Kevin, Chetan S. Jarali, Raja Samikkannu, Y. Charles Lu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Shape memory polymer (SMP) composites have evolved uniquely, employing nanoscale fillers, which add multifunctionality to the basic resin. In this work, the effect of inorganic, grafted hydroxyapatite (g-HAp) nanoparticles on the dynamic (mechanical), thermo-mechanical and microstructural properties of copolymer, based on diurethane dimethacrylate (DUDMA), (t-butyl acrylate (tBA), and crosslinker poly(ethylene glycol) dimethacrylate (PEGDMA), has been investigated. The agglomeration of nanofillers is limited by using PEG dimethacrylate monomer to graft HAp nanoparticles. Importantly, it is observed that mixing DUDMA in (tBA + PEGDMA) has improved the Young's Modulus of SMP composite to 5.4 GPa at RT (comparable to aircraft grade resin) with a glass transition temperature (Tg) of 55°C. Tensile stress is high as 51.46 MPa with improved strain at failure from 0.07% to 0.05%. The elongation strains of 4–8% are achieved, which provide the required strain compatibility to develop aerospace SMPs as well as SMP composites for structural and bio-medical applications.

Original languageEnglish
Pages (from-to)3585-3597
Number of pages13
JournalPolymer Composites
Volume43
Issue number6
DOIs
StatePublished - Jun 2022

Bibliographical note

Funding Information:
The authors confirm that present work has not received funding by any organizations.

Publisher Copyright:
© 2022 Society of Plastics Engineers.

Keywords

  • bio-compatible shape memory polymer
  • functional polymer composites
  • mechanical properties
  • mechanical testing
  • process simulation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry (all)
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'A novel shape memory polymer composites with grafted hydroxyapatite nanoparticles for high strength and stiffness applications'. Together they form a unique fingerprint.

Cite this