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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/29493

Title: Effect of High Yield Pulp on the Dimensional Stability of Wood-free Paper for Inkjet Printing Applications
Authors: Barquin, Adrew
Advisor: Kortschot, Mark Timothy
Yan, Ning
Department: Chemical Engineering and Applied Chemistry
Keywords: Dimensional Stability
Cockling
High Yield Pulp
Inkjet Printing
Hygroexpansivity
X-ray microtomography
Issue Date: 11-Aug-2011
Abstract: A hygroexpansimeter, cockling tester and a novel x-ray microtomography technique were employed to characterize hygroexpansivity as well as macro- and micro-scale cockling of wood-free paper sheets containing varying amounts of aspen high yield pulp (HYP) in order to validate its potential applicability in inkjet printing. Results from the hygroexpansimeter confirm previous findings that substitution levels of 30% and above lead to a slight deterioration of hygroexpansivity; however, contrary to the expected outcome, aspen HYP did not necessarily result in a higher tendency to form cockles. In fact, a comparison of the cockling behaviour between various paper samples and commercial paper substantiates that up to 40% of aspen HYP can replace hardwood bleached Kraft pulp. The preservation of out-of-plane dimensional stability in non-coated samples is most likely due to the increase in bending stiffness of the paper as it became bulkier with more aspen HYP.
URI: http://hdl.handle.net/1807/29493
Appears in Collections:Master

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