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

doi:10.1002/pc.26639

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 journal › Article › peer-review

7 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 (T_g) 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 language	English
Pages (from-to)	3585-3597
Number of pages	13
Journal	Polymer Composites
Volume	43
Issue number	6
DOIs	https://doi.org/10.1002/pc.26639
State	Published - Jun 2022

Bibliographical note

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
General Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/pc.26639

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

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.",

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AU - Jarali, Chetan S.

AU - Samikkannu, Raja

AU - Lu, Y. Charles

PY - 2022/6

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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