In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold

S. R. Stock; J. S. Park; A. Jakus; M. Birkbak; S. Frølich; H. Birkedal; R. Shah; J. D. Almer

doi:10.1016/j.mtla.2021.101174

In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold

S. R. Stock^*, J. S. Park, A. Jakus, M. Birkbak, S. Frølich, H. Birkedal, R. Shah, J. D. Almer

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

3 Citationer (Scopus)

Abstract

A 3D printed scaffold consisting of a composite with very high volume fraction of particulate hydroxyapatite (hAp, 74 vol.%) and small volume fraction of poly-lactic-co-glycolic acid (26 vol.%) was loaded in compression, and the internal strains in the hAp phase were measured by high-energy x-ray diffraction. Diffraction patterns were recorded at multiple positions in the scaffold at cross-head displacements of 0, -0.52 and -0.62 mm (2.0 mm total scaffold height). The 00.2 and 21.0 hAp strains never exceeded 2 × 10⁻⁴, and most positions showed strains ≤ 1 × 10⁻⁴, which was the magnitude of the experimental uncertainty.

Originalsprog	Engelsk
Artikelnummer	101174
Tidsskrift	Materialia
Vol/bind	18
ISSN	2589-1529
DOI	https://doi.org/10.1016/j.mtla.2021.101174
Status	Udgivet - aug. 2021

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title = "In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold",

abstract = "A 3D printed scaffold consisting of a composite with very high volume fraction of particulate hydroxyapatite (hAp, 74 vol.%) and small volume fraction of poly-lactic-co-glycolic acid (26 vol.%) was loaded in compression, and the internal strains in the hAp phase were measured by high-energy x-ray diffraction. Diffraction patterns were recorded at multiple positions in the scaffold at cross-head displacements of 0, -0.52 and -0.62 mm (2.0 mm total scaffold height). The 00.2 and 21.0 hAp strains never exceeded 2 × 10−4, and most positions showed strains ≤ 1 × 10−4, which was the magnitude of the experimental uncertainty.",

keywords = "Hydroxyapatite (hAp), Internal stresses, Synchrotron radiation, Tissue engineering, X-ray diffraction",

author = "Stock, {S. R.} and Park, {J. S.} and A. Jakus and M. Birkbak and S. Fr{\o}lich and H. Birkedal and R. Shah and Almer, {J. D.}",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = aug,

doi = "10.1016/j.mtla.2021.101174",

language = "English",

volume = "18",

journal = "Materialia",

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T1 - In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold

AU - Stock, S. R.

AU - Park, J. S.

AU - Jakus, A.

AU - Birkbak, M.

AU - Frølich, S.

AU - Birkedal, H.

AU - Shah, R.

AU - Almer, J. D.

PY - 2021/8

Y1 - 2021/8

N2 - A 3D printed scaffold consisting of a composite with very high volume fraction of particulate hydroxyapatite (hAp, 74 vol.%) and small volume fraction of poly-lactic-co-glycolic acid (26 vol.%) was loaded in compression, and the internal strains in the hAp phase were measured by high-energy x-ray diffraction. Diffraction patterns were recorded at multiple positions in the scaffold at cross-head displacements of 0, -0.52 and -0.62 mm (2.0 mm total scaffold height). The 00.2 and 21.0 hAp strains never exceeded 2 × 10−4, and most positions showed strains ≤ 1 × 10−4, which was the magnitude of the experimental uncertainty.

AB - A 3D printed scaffold consisting of a composite with very high volume fraction of particulate hydroxyapatite (hAp, 74 vol.%) and small volume fraction of poly-lactic-co-glycolic acid (26 vol.%) was loaded in compression, and the internal strains in the hAp phase were measured by high-energy x-ray diffraction. Diffraction patterns were recorded at multiple positions in the scaffold at cross-head displacements of 0, -0.52 and -0.62 mm (2.0 mm total scaffold height). The 00.2 and 21.0 hAp strains never exceeded 2 × 10−4, and most positions showed strains ≤ 1 × 10−4, which was the magnitude of the experimental uncertainty.

KW - Hydroxyapatite (hAp)

KW - Internal stresses

KW - Synchrotron radiation

KW - Tissue engineering

KW - X-ray diffraction

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U2 - 10.1016/j.mtla.2021.101174

DO - 10.1016/j.mtla.2021.101174

M3 - Journal article

AN - SCOPUS:85111236535

SN - 2589-1529

VL - 18

JO - Materialia

JF - Materialia

M1 - 101174

ER -

In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold

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