3D TEM reconstruction and segmentation process of laminar bio-nanocomposites

Iturrondobeitia, Maider; Okariz, Ana; Martinez, Roberto Fernandez; Jimbert, Pello; Guraya, Teresa; Ibarretxe, Julen

doi:10.1063/1.4914238

Cited by 5 publications

(9 citation statements)

References 12 publications

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“…The segmentation of the reconstructions was carried out using Amira and an in‐house developed methodology . This methodology is based on the threshold segmentation and on a criterion derived from the variation of the dimensions of the segmented objects.…”

Section: Methodsmentioning

confidence: 99%

“…The methodology was initially developed using a fictitious volume containing three laminar objects in different positions and with different orientations as shown in Figures and . The validation of the methodology was done simply by comparing the volume of the original objects to the segmented ones.…”

Section: Methodsmentioning

confidence: 99%

“…Actually, manual segmentation still remains as the prevalent method of choice. In this regard, a simple, efficient, and objective methodology to perform the segmentation that was previously reported will be applied herein. An objective procedure is of great importance when the aim of the 3D quantification is to compare microstructures of different materials.…”

Section: Introductionmentioning

confidence: 99%

“…The aim and novelty of the current work is to perform and show in detail a 3D ET quantitative analysis of two different PLA/clay samples, PLA/Cloisite 20A and PLA/Cloisite 30B obtained by melt blending processing, and to relate the observed microstructure to their thermal stability. For that, the segmentation methodology previously shown with fictitious objects is here applied for actual experimental data …”

Section: Introductionmentioning

confidence: 99%

“…In this article, first an extra validation step for the segmentation of fictitious objects is added, extending the previously reported work . Then, the methodology is applied to two nanocomposites to understand the effect of the different clays (and their microstructure) on the thermal stability of the PLA matrix.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Quantitative electron tomography of PLA/clay nanocomposites to understand the effect of the clays in the thermal stability

Iturrondobeitia

Guraya

Okariz

et al. 2016

J of Applied Polymer Sci

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Poly(lactic acid) (PLA) is one of the most promising bio-based and biodegradable polymers. However, its processability and range of applications are limited by its low thermal stability. The novelty of this work is studying the thermal stability of two PLA/clay nanocomposites (PLA/Cloisite 20A and PLA/Cloisite 30B) as a function of the composition and the microstructure, which is exhaustively studied by performing quantitative electron tomography (ET). Quantitative ET involves image acquisition, reconstruction of the volume and a subsequent segmentation of the objects under study. In this work, an objective segmentation is applied to compare the two PLA/clay microstructures. Then, relevant descriptors of the 3D microstructure (dimensions of the reconstructed objects, their specific surface area and orientation) are measured and used to quantitatively explain the effect of the clay particles on the thermal stability of the nanocomposites. The tortuous path has been calculated-based on the descriptors of the microsturecture-and proved to be larger for PLA/Cloisite 30B nanocomposite compared to that of PLA/Cloisite 20A. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44691.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quantitative electron tomography of PLA/clay nanocomposites to understand the effect of the clays in the thermal stability

Iturrondobeitia

Guraya

Okariz

et al. 2016

J of Applied Polymer Sci

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Electric field distribution around asymmetric agglomerate model reconstructed from FIB–SEM images of epoxy nanocomposite

Tagawa

Kurimoto

Sawada³

et al. 2023

IET Nanodielectrics

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This study focussed on determining the electric field distribution formed by asymmetric agglomerates in order to elucidate the mechanism by which large agglomerates reduce the dielectric breakdown strength of nanocomposites. Epoxy nanocomposite sample was prepared by adding 2.5 vol% of TiO 2 nanoparticles with a primary particle size ranging from 30 to 50 nm. The three-dimensional (3D) structure of the epoxy nanocomposites with a thickness of 5 μm was analysed via focussed ion beam and scanning electron microscopy. The 3D reconstruction was performed using 250 observation images, and a 3D model of the particle in the observational range was obtained. The electric field distribution for the 3D model of the agglomerate with the largest size was determined using the finite element method. In addition, we constructed a calculation model that effectively accommodate changes in the direction of the applied electric field. Subsequently, we examined the changes in the maximum electric field intensity around the agglomerate.

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3D Reconstruction of TiO2/Epoxy Nanocomposite for Evaluation of Agglomerate Disruption Effect

Tagawa

Kurimoto

Sawada

et al. 2022

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

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3D TEM reconstruction and segmentation process of laminar bio-nanocomposites

Cited by 5 publications

References 12 publications

Quantitative electron tomography of PLA/clay nanocomposites to understand the effect of the clays in the thermal stability

Quantitative electron tomography of PLA/clay nanocomposites to understand the effect of the clays in the thermal stability

Electric field distribution around asymmetric agglomerate model reconstructed from FIB–SEM images of epoxy nanocomposite

3D Reconstruction of TiO2/Epoxy Nanocomposite for Evaluation of Agglomerate Disruption Effect

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