Surface modification of veneers with O2 and N2 plasma: a comparative study on formaldehyde scavenging mechanisms in plywood
European Journal of Wood and Wood Products, cilt.84, sa.5, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 84 Sayı: 5
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s00107-026-02494-2
- Dergi Adı: European Journal of Wood and Wood Products
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chimica, Compendex, ICONDA Bibliographic, INSPEC, The International Construction Database (ICONDA), Natural Science Collection (ProQuest), Earth, Atmospheric, & Aquatic Science Collection (ProQuest)
- Karadeniz Teknik Üniversitesi Adresli: Evet
Özet
This study investigates the effect of plasma treatment on the formaldehyde emission of plywood panels produced from Scots pine (Pinus sylvestris), beech (Fagus orientalis), and poplar (Populus deltoides I-77/51) veneers. O2 and N2 gases were utilized to pre-treat veneer sheets using a low-pressure plasma system. To evaluate the effect of process parameters, plasma powers of 150 and 300 W were applied to the veneers for 1, 5, and 15 min. Additionally, two different veneer drying temperatures were tested. Following the treatment, the veneers were bonded with urea-formaldehyde (UF) powder resin to manufacture plywood panels, and formaldehyde emission values were determined according to TS EN 717-3. The results indicated that Scots pine plywood exhibited the highest formaldehyde emission values, whereas beech plywood panels demonstrated the lowest. Notably, N2 plasma treatment significantly reduced formaldehyde emission by up to 64% in beech panels and 46% in poplar panels compared to the control groups, while showing varied effects on Scots pine depending on parameters. The effect of veneer drying temperature on formaldehyde emission was found to vary depending on the wood species. Furthermore, the results revealed that the optimum plasma parameters for reducing formaldehyde release differed among wood species, with N2 plasma treatment proving more effective than O2 plasma.