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Gewählte Doctoral Thesis:

Doctoral Thesis - Holzforschung und Holztechnologien (WST), BOKU-Universität für Bodenkultur, pp 76. UB BOKU obvsg

Data Source: ZID Abstracts
This doctoral thesis took place in the frame of the Flippr° (Future Lignin and Pulp Processing Research) project, a research project involving three Austrian universities – BOKU, TU Graz and Uni Graz – and four papermaking companies. This project running from 2013 to 2017 was divided into several main research areas, themselves divided into sub-projects. This work deals with the results of the subproject 2.5., entitled “Fines for non-paper utilisations”. The aim of this doctoral work was to characterise so-called “fines” originating from the beating and pulping steps of the papermaking process and to evaluate their suitability for other applications. Several arguments can be found to highlight the negative impact of this kind of fibres. First of all, they are assumed to be responsible for a substantial part of chemicals consumption due to their high surface area. Moreover, they decrease the air permeability of formed sheets, which can turn out to be a disadvantage (e.g. when filling cement bags, where air has to escape as quickly as possible). In this sense, it seems of advantage to get the fines out of the process at an early stage and to use them for other application instead of leaving them in the final paper sheet. Nevertheless, there are no alternative applications known for fines. To put this work in its scientific context, ways to define fines as well as their impact in the papermaking process will be summarized in the introduction. Then, characterisation methods will be presented. Finally, details about possible application fields of fines will be given, along with practical results obtained in the course of the experimental work performed during the thesis. Papers which have been published in or submitted to scientific peer-reviewed journals can be found in the appendix of this thesis.

Betreuer: Gindl-Altmutter Wolfgang
1. Berater: Hansmann Christian
2. Berater: Müller Ulrich

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