Introduction

The Department of Wood Processing (founded in 1979) was renamed the Chair of Wood Processing at TUT in 1992 and the Wood Technology Laboratory in 2017. From 1980 to 1992, the main research area of the then TPI woodworking institute was the technological processes of the pulp and paper industry and the technology of wooden boards. In 1996, the last flight of TTU Wood Processing Technology graduated engineers specializing in pulp and paper industry technology.

In 2012, Jaan Kers started working as a professor and head of the chair of woodworking, and in 2013 he launched a new international master's program "Wood, plastic and textile technology", which is still successfully functioning, in which the technologies of wood polymer composites and cellulose were again taught.

In 2015, on the basis of the Law of TUT, eight professorships engaged in teaching, research and development activities in technical sciences were established, financed from the state budget, including the e-professorship of wood processing.

In 2020, the joint project of the Erasmus+ program with several master's degrees and five international universities to conduct the study program "European Master in Biological and Chemical Engineering for a Sustainable Bioeconomy" was launched. In the spring of 2021, 17 BIOCEB students came to study at TTU's Wood, Plastic and Textile Technology international master's program, and they carried out study and research in the teaching and research laboratories of Materials and Environmental Technology and Chemistry and Biotechnology.

For the effective and sustainable use of wood and wood-based composite materials, it is necessary to understand the physical-mechanical and chemical properties and technological processes resulting from their construction. The wood and composites working group of the wood technology laboratory develops biocomposite materials (wood polymer composites, reed biocomposites, hemp long fiber composites, cellulose derivative biocomposites) in cooperation with the polymers and textile technology laboratory working group for various applications (packaging materials, food containers, insulation materials). In cooperation with TTU's lignin chemical and enzymatic working group, we are developing new lignocellulosic biomass pretreatment technologies, organosolv et al.

Membership

Prof. Jan Kers Group leader
Dr. Heikko Kallakas
Dr. Anti Grasslands
Dr. from Natalja Sava
Percy Festus Alao Doctoral student
Umair Qasim Doctoral student
Catherine Kilumets Master's student

Selected publications

Rohumaa, A.; Kallakas, H.; Mäetalu, M.; Savest, N.; Kers, J. (2021). The Effect of Surface Properties on Bond Strength of Birch, Black Alder, Gray Alder and Aspen Veneers. International Journal of Adhesion and Adhesives, #102945. DOI: 10.1016/j.ijadhadh.2021.102945.

Marrot, L.; Alao, PF; Mikli, V.; Kers, J. (2021). Properties of frost-retted hemp fibers for the reinforcement of composites. Journal of Natural Fibers. DOI: 10.1080/15440478.2021.1904474.

Alao, PF; Marrot, L.; Burnard, M, D.; Lavrič, G.; Saarna, M.; Kers, J. (2021). Impact of Alkali and Silane Treatment on Hemp/PLA Composites' Performance: from Micro to Macro Scale. Polymers, 13 (6), #851. DOI: 10.3390/polym13060851.

Alao, PF; Marrot, L.; Kallakas, H.; Just, A.; Poltimae, T.; Kers, J. (2021). Effect of Hemp Fiber Surface Treatment on the Moisture/Water Resistance and Reaction to Fire of Reinforced PLA Composites. Materials, 14 (15), #4332. DOI: 10.3390/ma14154332.

Kallakas, H.; Ayansola, SG; Tumanov, T.; Goljandin, D.; Poltimäe, T.; Krumme, A., Kers, J. (2019). Influence of Birch False Heartwood on the Physical and Mechanical Properties of Wood-plastic Composites. BioResources, 14 (2), 3554−3566. DOI: 10.15376/biores.14.2.3554-3566.

Technical ability

  • Contact angle measurement system for determining surface properties (Dataphysics)
  • Surface roughness device Mitutoja Surftest 210
  • Light microscope (Nicon Eclipse ME600 (Zeiss Axiocam 208 Camera)).
  • AMETEK Brookfield digital viscometer LVDVE for determining the viscosity of adhesives
  • Mettler-Toledo SevenCompact pH meter S210 for determining the pH of adhesives.
  • Wood surface color and gloss measuring devices 3nH NR60CP and 3NH G268 Tri Angle Touch Screen Gloss Meter 2000gu with 20/60/85 degree
  • There are climate cabinets (CLIMACELL, ILKA) for conditioning and testing wood samples.
  • UV radiation chambers
  • Automatic measuring devices for humidity and temperature (Scanntronik).
  • There are different sizes of heat presses for the production of wood materials and composites.
  • There is a finishing chamber for wood finishing and autoclaves for impregnation.
  • For woodworking technology, the laboratory has a CNC bench (WEEKE Optimat BHC 280) and various saws, a lathe, a thicknessing machine, a planer, a belt sander, a drill press.
  • Furniture test stands (Hegewald & Peschke)
  • Taber Rotary Abraser device for determining wear resistance of materials.
  • Mechanical testing device ZwickRoell Z050 (50 kN).

Technological line of the veneer and plywood T and A center

  • soaking tub,
  • Veneer lathe
  • The guillotine
  • Veneer dryer
  • Rollers for gluing and applying surface covering materials
  • Hot presses 900x900mm, 330x330mm and 150x150mm
  • Laboratory autoclaves with and without heating
  • Spraying equipment for applying glue and coatings

Current projects

SMART Agreement 19028 Sutu OÜ - Smart specialization application study "Application study for the use of reed biocomposite materials in biodegradable food dishes" (01.04.2019-31.03.2022) project manager Jaan Kers

Participation of prof. Andres Krumme in the RESTA10 project "Chemical beneficiation of cellulose in the environment of ionic liquids (1.09.2020−31.08.2023)" (ETIS)

NUTIKAS "Valuing low-quality wood species through the development of innovative composite materials (1.09.2019−31.08.2022)" (ETIS) project manager Jaan Kers

PRG820 "Design of wood-bioadhesive systems to achieve the best interaction of materials in sustainable veneer-based products made from little-used wood species (1.01.2020−31.03.2021)", project manager Jaan Kers

RITA1/01-18 "Increasing added value and more efficient use of raw materials in the Estonian bioeconomy and its sectors. (1.03.2018−31.10.2021)", volume €1.5 million, project manager Jaan Kers, Tallinn University of Technology.

Bioeconomy (taltech.ee)