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FCK3111 Fibre - Water 4.5 credits

The interactions of water with cellulose-based materials from a thermodynamic and polymer physical perspective, and its effect on mechanical properties and final performance of fibre based networks.

Course offering missing for current semester as well as for previous and coming semesters
Headings with content from the Course syllabus FCK3111 (Spring 2021–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

  • Fibre, paper and water interactions: Problem specification, and importance.
  • Thermodynamics of water vapour adsorption to fibres
  • Swelling of polyelectrolyte gels and cellulose fibres
  • The influence of moisture on mechanical properties of fibre compositions, papers and films and their outcome performance
  • Fundamentals of wetting, capillary penetration and superhydrophobicity
  • Liquid absorption in hygiene products

Intended learning outcomes

After completion of the course the doctoral student should:

  • Have good knowledge and overview of the basic processes that control the interaction of water with cellulose-based materials.
  • Have overall understanding of the impact of wetting, absorption and swelling on porous fiber networks.
  • Be able to define the basic mechanisms that control interactions (wetting, absorption, swelling) both from a thermodynamic and polymer physical perspective.
  • Have planned and carried out the course independently in order to pass the exam, and be able to critically evaluate one's own and others' results from a scientific point of view.

Course disposition

Lectures and self studies.

Lectures concentrated during one week of full-time studies, and 2 weeks of full-time self studies on supplied written material followed by a written exam.

Literature and preparations

Specific prerequisites

Eligible for studies at the third-cycle level.

Recommended prerequisites

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Selected literature and copies of handouts.

Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

P, F


  • DEL1 - Participation, 1,5 hp, betygsskala: P, F
  • TEN1 - Written exam, 3,0 hp, betygsskala: P, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Participation in lectures, and 2 weeks of studies of supplied literature and a passed written exam.

Other requirements for final grade

Compulsory presence during the lectures is credited as 1.5 ECTS, and the passed written exam as 3.0 ECTS.

Opportunity to complete the requirements via supplementary examination

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Opportunity to raise an approved grade via renewed examination

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Profile picture Lars Wågberg

Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course web

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Offered by

CBH/Fibre and Polymer Technology

Main field of study

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Education cycle

Third cycle

Add-on studies

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Supplementary information

The course replaces the course F3D5111; Paper-Water interaction

Postgraduate course

Postgraduate courses at CBH/Fibre and Polymer Technology