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Enseignement scientifique et technique - BIOCEB-Aalto-Cellulose : Cellulose-based fibres (including Green Line project 3rd stage)


Acquaint the student with plant-based fibres and nanofibres: structure,
physical and chemical behavior as well as applications

Objectifs pédagogiques

Knowledge and understanding
For a passing grade the student must

- Be able to tell the physical and chemical distinctions between natural
fibres, regenerated fibres, and nanofibres

- Be able to describe the basic structures, properties and functions of
common hemicelluloses and lignins

- Master the morphology of the native cellulose microfibril and
acknowledge how it affects nanocellulose preparation and properties

- Be able to detect the major obstacles and difficulties in cellulose
dissolution and regeneration through basic laws of physical chemistry

- Be able to explain the main pathways to chemical modification of
cellulose, including nanocellulose

- Be able to apply basic structure-property relationship to cellulose-
based fibres and understand their implications in most common
modern applications

Judgement and approach
For a passing grade the student must

- Be able to distinguish the special nature of plant-based fibres and
assess how the properties affect their applicability

- Be able to point out the main bottlenecks in modern applications of
cellulose-based fibres, and fibre components

- Be able to choose correct analytical methods for assessing certain
properties of cellulose-based fibres and their applications

Format des notes

Validé / non validé

Pour les étudiants du diplôme Diploma in Biological and Chemical Engineering for a Sustainable Bioeconomy (Bioceb)

Vos modalités d'acquisition :

Oral examination (50%)
Report on the laboratory work (50%)

Grading from 0-5

L'UE est acquise si Note finale >= Validé
  • Crédits ECTS acquis : 5 ECTS


L'UE est acquise si Note finale >= Validé
  • Crédits ECTS acquis : 5 ECTS

Programme détaillé

Isolation of wood and non-wood fibres from the plant material; cell wall
structure of lignocellulosic fibres; chemical structure and most common
chemical reactions of cell wall components; structure-property relationships of
lignocellulosic fibres; sorption behaviour and effect on properties; fibre
mechanics and modelling; defects in fibres and their effect on properties;
dissolution of cellulose and manufacture of regenerated cellulose; structure
and properties of regenerated cellulose; nanocellulose isolation,
characteristics and applications

Mots clés

ibre cell wall, cellulose microfibril, nanocellulose, lignin, hemicellulose, functional materials, regenerated fibres
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