Analysis of the impact of papermaking variables on the structure and transport properties of paper samples by X-ray microtomography
Date
2006
Authors
Goel, Amit
Arns, Christoph
Holmstad, R
Gregersen, O W
Bauget, Fabrice
Averdunk, Holger
Sok, Robert
Sheppard, Adrian
Knackstedt, Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Pulp and Technical Association of Canada
Abstract
The effect of papermaking variables on the structure and transport properties of paper samples was analyzed Various newsprint samples were prepared on a pilot paper machine by varying the raw material furnish and process parameters, including headbox consistency, retention aids and calendering. Three-dimensional digital images of the sample structure were obtained by using the synchrotron X-ray computed tomography facility at ESRF, Grenoble, France. Structural parameters (porosity, specific surface area, pore-size distribution and tortuosity) and transport properties (permeability and diffusivity) were calculated directly on the digitized images. Results indicate that the calendering operation plays a dominant role in altering the structure and transport properties of the samples.
Description
Keywords
Keywords: Calendering; Computerized tomography; Newsprint; Raw materials; Transport properties; X ray analysis; ESRF (CO); Three dimensional digital images; X ray computed tomography; X ray microtomography; Papermaking; Calendering; Newsprint; Paper Making; Raw Mat Calendering; Newsprint; Paper properties; Permeability; Pore size distribution; Porosity; Specific surface; Variables; X ray analysis
Citation
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Source
Journal of Pulp and Paper Science
Type
Journal article