Comparison of 3D structural characteristics of high and low resolution X-ray microtomographic images of paper

Holmstad, Rune; Gregersen, Øyvind Weiby; Aaltosalmi, U.; Kataja, M.; Koponen, Antti; Goel, Ashish; Ramaswamy, Shri

doi:10.3183/npprj-2005-20-03-p283-288

Cited by 14 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Holmstad et al . () found that the porosity of the handsheet, as measured by a high‐resolution X‐ray μCT, was higher than those measured by a corresponding low‐resolution tomography device.…”

Section: Comparison Of the Characterization Methodsmentioning

confidence: 92%

Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniques

Al-Qararah

Ekman

Hjelt

et al. 2016

Journal of Microscopy

View full text Add to dashboard Cite

Recent developments in making fibre materials using the foam-forming technology have raised a need to characterize the porous structure at low material density. In order to find an effective choice among all structure-characterization methods, both two-dimensional and three-dimensional techniques were used to explore the porous structure of foam-formed samples made with two different types of cellulose fibre. These techniques included X-ray microtomography, scanning electron microscopy, light microscopy, direct surface imaging using a CCD camera and mercury intrusion porosimetry. The mean pore radius for a varying type of fibre and for varying foam properties was described similarly by all imaging methods. X-ray microtomography provided the most extensive information about the sheet structure, and showed more pronounced effects of varying foam properties than the two-dimensional imaging techniques. The two-dimensional methods slightly underestimated the mean pore size of samples containing stiff CTMP fibres with void radii exceeding 100 μm, and overestimated the pore size for the samples containing flexible kraft fibres with all void radii below 100 μm. The direct rapid surface imaging with a CCD camera showed surprisingly strong agreement with the other imaging techniques. Mercury intrusion porosimetry was able to characterize pore sizes also in the submicron region and led to an increased relative volume of the pores in the range of the mean bubble size of the foam. This may be related to the penetration channels created by the foam-fibre interaction.

show abstract

Section: Comparison Of the Characterization Methodsmentioning

confidence: 92%

Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniques

Al-Qararah

Ekman

Hjelt

et al. 2016

Journal of Microscopy

View full text Add to dashboard Cite

show abstract

“…X-μCT is a non-destructive method for obtaining the three-dimensional structure of a physical material sample. It is well suited for structural analysis of complex heterogeneous materials such as paper, biological materials and fibrous composites (Samuelsen et al, 2001;Holmstad et al, 2005;Axelsson, 2008). In addition, FESEM is a powerful technique for assessment of a variety of materials.…”

Section: Introductionmentioning

confidence: 99%

Structural Characterisation of Kraft Pulp Fibres and Their Nanofibrillated Materials for Biodegradable Composite Applications

Chinga-Carrasco¹,

Miettinen²,

Hendriks³

et al. 2011

Nanocomposites and Polymers With Analytical Methods

View full text Add to dashboard Cite

“…The applicability of low‐resolution X‐ray microtomography was discussed by Holmstad et al 2005. Compared to the synchrotron radiation based technique with a maximum resolution of about 0.35 μm per voxel, a lower resolution in the range of 1–5 μm per voxel is possible.…”

Section: Introductionmentioning

confidence: 99%

“…Another important application of X-ray microtomography was the analysis of porosity and permeability, as well as the thermal conductivity of fibrous materials (Goel et al, 2004;Rolland du Roscoat et al, 2005;Lux et al, 2006;Rolland du Roscoat et al, 2008;Axelsson & Svensson, 2009). The applicability of low-resolution X-ray microtomography was discussed by Holmstad et al 2005. Compared to the synchrotron radiation based technique with a maximum resolution of about 0.35 µm per voxel, a lower resolution in the range of 1-5 µm per voxel is possible.…”

Section: Introductionmentioning

confidence: 99%

Automated serial sectioning applied to 3D paper structure analysis

Wiltsche

Donoser

Kritzinger

et al. 2010

Journal of Microscopy

View full text Add to dashboard Cite

SummaryA better understanding of paper properties requires a detailed knowledge about the spatial arrangement of its constituent materials in its structure. This paper presents a novel approach for the analysis of the three-dimensional paper structure at the fibre level. A technique combining a rotary microtome and an optical microscopy was developed allowing serial sectioning of hundreds of cuts. The microscope is fixed on a moveable stage and mounted in front of a microtome. Repeatedly, thin slices are cut off an embedded paper sample and the cut block surface is scanned in a fully automated process. The prototype built is able to digitize paper samples with a size of more than 1 cm 2 at a possible three-dimensional resolution below 1 µm. Advanced computer vision methods are applied to extract relevant information from the digitized samples. Currently, the most important applications are the analysis of pigment coating layers on the paper surfaces and the analysis of fibre transverse morphology. Besides the analysis of paper structures, this technique is also suited for the spatial analysis of other materials, if the structural features are accessible with light optical microscopy.

show abstract

Comparison of 3D structural characteristics of high and low resolution X-ray microtomographic images of paper

Cited by 14 publications

References 0 publications

Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniques

Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniques

Structural Characterisation of Kraft Pulp Fibres and Their Nanofibrillated Materials for Biodegradable Composite Applications

Automated serial sectioning applied to 3D paper structure analysis

Contact Info

Product

Resources

About