The dry-to-wet transition of fiber networks-Return to mechanical stability
Artikel i vetenskaplig tidskrift, 2023

In this article, we provide a comprehensive experimental, numerical, and theoretical explanation of the dry-to-wet transition of nonbonded fiber networks made of natural fibers. Given that the main functionality of many common products consisting of fluff pulp fiber networks requires absorption of liquids, we focus on understanding the solid volume fraction transition from a dry to a wet state as a crucial component for controlling properties such as permeability and capillary pressure, on which product function eventually depends. From studying the wetting of fluff pulp fiber networks with a distribution of fiber lengths, we show that the change in the solid volume fraction going from dry to wet state is driven by the disappearance of fiber-fiber adhesion. The mechanically stable state to which the network transitions is independent of its prior dry solid volume fraction and predetermined primarily by the fiber aspect ratio.

fibers

porous media

particle technology

mechanics

Författare

Per Bergström

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Essity Hygiene and Health AB

Charlotta Hanson

Essity Hygiene and Health AB

Chalmers, Kemi och kemiteknik, Kemiteknik

Henrik Ström

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Srdjan Sasic

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

AICHE Journal

0001-1541 (ISSN) 1547-5905 (eISSN)

Vol. 69 9 e18148

Ämneskategorier

Pappers-, massa- och fiberteknik

DOI

10.1002/aic.18148

Mer information

Senast uppdaterat

2024-03-07