Course syllabus ZWM - Wood Modification (FFWT - WS 2019/2020)

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Course code:
Course title in Czech:
Wood Modification
Course title in English:
Wood Modification
WS 2019/2020
Mode of completion and number of credits: Exam (4 credits)
Mode of delivery and timetabled classes:
full-time, 1/2 (hours of lectures per week / hours of seminars per week)
Level of course:
master; master continuing; doctor
Course type: optional
Type of delivery:
Mode of delivery for our mobility students abroad:
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Language of instruction: English
Course supervisor:
Course supervising department:
Teachers: Ing. Petr Čermák, Ph.D. (examiner, instructor, lecturer, supervisor, tutor)
Ing. Jakub Dömény, Ph.D. (examiner, instructor, lecturer, tutor)
Ing. Petr Pařil, Ph.D. (instructor, lecturer)
Ing. Radim Rousek (instructor, lecturer)
Timetable in this semester:
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Aim of the course and learning outcomes:
The objective of the course is to make the students familiar with existing discrepancies in availability and demand of wood quantity as well as in native wood properties and demanded technical requests. The main problem in utilization of lot of wood species and assortments is low quality of wood, which is often not suitable for higher value demands. Wood modification can help to improve these unsufficient wood properties. Traditional wood protection, processed by impregnation of wood with biocides, is mainly limited on increase of durability of wood, reducing or preventing the wood deterioration activity of wood decaying fungi or insects. Effectiveness of inserted biocides with typically toxic components is mainly limited on decay restriction, further improvements of additional wood properties are not possible or possible only in a minor degree, because relevant structure of wood is widely unchanged by this process. In contrast to this wood modification, which works on the basic of structure changes of wood components, influences a lot of wood properties, like moisture behavior (humidity uptake, swelling/ shrinkage), physical and elasto-mechanical properties as well as durability.In addition the mainly toxic-free composition of wood modification agents leads to environmental friendly process conditions and non-complex admission requirements. Furthermore not only toxic-free, but additionally sustainable and renewable production and application processes, using native solutions from plant growing components have been developed by Mendelu wood research group. Students will be educated in theoretical background of native and technical improved wood quality as well as in techniques of wood impregnation with semi-practical autoclave plant in Department Technology Center Utechov. Additional tests, using quality and quantity evaluations, are introduced to prove success of treatments.
Course content:
1.Introduction (allowance 3/6)
a.wood as a composite material
anisotropic behavior of wood
chemical composition and structure of wood

2.Wood modification (allowance 2/4)
a.wood modification background and theory
principles of wood cell wall modification
material properties of modified wood
utilization and application

3.Chemical modification (allowance 2/4)
technological methods, impregnation autoclave
chemical solutions (oils, waxes, nano-particles)

4.Thermal modification (allowance 2/4)
methods of treatments, influence of temperature and time
process optimization
material properties of thermally modified wood

Wood densification (allowance 2/4)
a.wood plasticization (steam, ammonia, MW)
b.densification parameters (compression ratio, directions, etc.)
material properties of densified wood

Microwave modification (allowance 2/4)
a.microwave theory
application of MW for material properties improvment
material properties of MW treated wood

Learning activities and teaching methods:
Type of teaching method
Daily attendance
16 h
32 h
20 h
preparation for exam
18 h
preparation for regular assessment
4 h
preparation of presentation
6 h
writing of seminar paper16 h
Total112 h
Assessment methods:
Final protocol from experimental tests will be done by students and final oral exam (4 credits) will be based on discussion on certain topics related to the wood modification (A - F).
Assessment criteria ratio:
Requirement type
Daily attendance
0 %
Recomended reading and other learning resources:
HILL, C A S. Wood modification : chemical, thermal and other processes. Chichester, England: John Wiley & Sons, 2006. 239 p. Wiley series in renewable resources. ISBN 978-0-470-02172-9.
Handbook of wood chemistry and wood composites. Boca Raton, Fla.: CRC Press, 2005. 487 p. ISBN 0-8493-1588-3.
Transport Processes in Wood. Berlin: Springer-Verlag, 1984. 245 p. ISBN 3-504-12574-4.
TORGOVNIKOV, G. Dielectric Properties of Wood and Wood-Based Materials. Berli: Springer-Verlag, 1993. 196 p. Springer Series in Wood Science. ISBN 3-540-55394-0.
Wood-Water Relations. Berlin: Springer-Verlag, 1988. 283 p. ISBN 3-540-19258-1.

RADEMACHER, P. Combined Processes of Beech Wood Modification for Floorings -- Influence on Properties, Durability and Health Aspects. In SilvaNet-WoodNet 2014. 1st ed. Brno: Mendelova univerzita v Brně, 2014, p. 116--117. ISBN 978-80-7509-137-6.
ČERMÁK, P. -- RAUTKARI, L. -- HORÁČEK, P. -- SAAKE, B. -- RADEMACHER, P. -- SABLÍK, P. Analysis of dimensional stability of thermally modified wood affected by re-wetting cycles. BioResources. 2015. v. 10, no. 2, p. 3242--3253. ISSN 1930-2126. URL:
DÖMÉNY, J. -- KOIŠ, V. -- ZAPLETAL, M. Application of Microwave Treatment for the Plasticisation of Beech Wood (Fagus sylvatica L.) and its Densification for Flooring System Purposes. BioResources. 2014. v. 9, no. 4, p. 7519--7528. ISSN 1930-2126. URL:
ČERMÁK, P. -- HORÁČEK, P. -- RADEMACHER, P. Measured temperature and moisture profiles during thermal modification of beech (Fagus sylvatica L.) and spruce (Picea abies L. Karst.) wood. Holzforschung: internationale journal of the biology, chemistry, physics and technology of wood. 2014. v. 68, no. 2, p. 175--183. ISSN 0018-3830. URL:
DÖMÉNY, J. -- KOIŠ, V. -- DEJMAL, A. Microwave Radiation Effect on Axial Fluid Permeability in False Heartwood of Beech (Fagus sylvatica L.). BioResources. 2014. v. 9, no. 1, p. 372--380. ISSN 1930-2126. URL:
KOIŠ, V. -- DÖMÉNY, J. -- TIPPNER, J. Microwave Device for Continuous Modification of Wood. BioResources. 2014. v. 9, no. 2, p. 3025--3037. ISSN 1930-2126. URL:

Course listed in study plans for this semester:
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Course listed in previous semesters: WS 2020/2021, WS 2018/2019, WS 2017/2018, SS 2016/2017, WS 2015/2016 (and older)
Teaching place:

Last modification made by Ing. Alice Malá on 11/19/2019.

Type of output: