Samenvatting
In this contribution we show how fibre activation and micro-buckling of fibre walls may explain, quantitatively, differences in the hygro-mechanical response of paper sheets due to the presence or absence of mechanical restraint during their fabrication. To this end, both effects are incorporated in an idealised micro-mechanical model of the fibre network. The model is used to predict the response of the network to wetting-drying cycles, as a function of the degree of restraint during production. Restrained-dried networks are predicted to exhibit an irreversible hygroscopic strain upon first wetting and a different reversible hygro-expansivity coefficient, compared with freely-dried networks, which match well with experimental values reported in the literature.
Originele taal-2 | Engels |
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Titel | Advances in Pulp and Paper Research |
Subtitel | Transactions of the 16th Fundamental Research Symposium, 3-8 September 2017, Oxford, United Kingdom |
Redacteuren | Warren Batchelor, Daniel Söderberg |
Plaats van productie | Bury |
Uitgeverij | Pulp & Paper Fundamental Research Society (FRC) |
Pagina's | 627-649 |
ISBN van geprinte versie | 978-0-9926163-3-5 |
Status | Gepubliceerd - sep. 2017 |