Publication detail

Swelling of cellulosic porous materials - mathematical description and verification

Authors: Geffert Anton | Vacek Ondrej | Jankech Andrej | Geffertová Jarmila | Milichovský Miloslav

Year: 2017

Type of publication: článek v odborném periodiku

Name of source: BioResources

Page from-to: 5017 - 5030

Titles:

Language	Name	Abstract	Keywords
cze	Bobtnání celulózových porézních materiálů - matematický popis a verifikace	Kompletní kvantitativní popis bobtnacích procesů lignocelulózových materiálů vedoucí k úplnému pochopení bobtnacích procesů biohmoty.	pórovité materiály; matematické modely bobtání; matematické modely navlhání
eng	Swelling of cellulosic porous materials - mathematical description and verification	The swelling of natural porous materials, including bleached pulp, as represented by mathematical descriptions, is influenced by a variety of different operating factors. The formerly used Generalised Hygroscopicity Model leads to either a disproportion between a model and a limit value of the sorption capacity or to noticeable deviation in the early swelling phase. Alternatively, the so-called Simple Bounded Growth model solely depends on the maximum sorption capacity, ignoring the physical properties that affect the fibre swelling rate. This research shows that the combination of the two models best describes the swelling process of bleached pulp – a rapid swelling phase and a slower swelling phase. The combined model was found to be useful in characterizing the well-known hornification process.	Porous materials; Simple bounded growth model; Generalized hygroscopicity model

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