Development of an industrial applicable dielectric barrier discharge (DBD) plasma treatment for improving bondability of poplar veneer
Abstract
Dielectric barrier discharge (DBD) plasma treatment in a larger scale, which has the potential for industrial application, was studied for modification of poplar veneer surface for enhancing its interface adhesion. Chemical property, morphology, surface wetting, adhesion property and the stability of the activation after plasma treatment were investigated. ESR, XPS, AFM, contact angle (CA), and shear strength test were carried out to evaluate the effect of plasma treatment. The following properties increased after treatment: the surface free radical concentration, O/C ratio, surface roughness of wood fiber, veneer surface wetting, and surface free energy. Consequently, the plywood composite prepared after plasma treatment showed higher adhesion strength than that prepared from untreated veneer. The best plywoods were obtained from veneers treated at processing power of 4.5 kW of DBD. The time-dependent analysis by surface wetting indicated a modified stability in the first two days after plasma treatment, after which the polar component of the surface decreased and its dispersive component kept the level observed after plasma treatment. In summary, veneer surface modification by DBD plasma is promising for industrial application.
Acknowledgments
The authors are indebted to the following organizations for their financial support: the National Department Public Benefit Research Foundation of China (Grant No. 201304507), the National Natural Science Foundation of China (Grant No. 31270606 and 31400515), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). Also this paper was sponsored by Qing Lan Project. Sincere thanks go to Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials for providing equipment for this study.
References
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Articles in the same Issue
- Frontmatter
- Original Articles
- Characteristics of guaiacyl-syringyl lignin in reaction wood in the gymnosperm Gnetum gnemon L.
- Sodium sulphite pulping of Scots pine under neutral and mildly alkaline conditions (NS pulping)
- Characterization of dissolving pulp by fibre swelling in dilute cupriethylenediamine (CUEN) solution in a MorFi analyser
- Hot water extraction of Norway spruce (Picea abies [Karst.]) bark: analyses of the influence of bark aging and process parameters on the extract composition
- Statistical modeling of pressurized hot-water batch extraction (PHWE) to produce hemicelluloses with desired properties
- Lignification of ray parenchyma cells (RPCs) in the xylem of Phellodendron amurense Rupr.: quantitative and structural investigation by TOF-SIMS and thioacidolysis of laser microdissection cuts of RPCs
- Relationship between the hydrophilicity of lignin dispersants and their performance towards pesticide particles
- Preparation of electric double layer capacitors (EDLCs) from two types of electrospun lignin fibers
- Simultaneous measurement of elastic constants of full-size engineered wood-based panels by modal testing
- Development of an industrial applicable dielectric barrier discharge (DBD) plasma treatment for improving bondability of poplar veneer
- Mode of action of brown rot decay resistance of thermally modified wood: resistance to Fenton’s reagent
Articles in the same Issue
- Frontmatter
- Original Articles
- Characteristics of guaiacyl-syringyl lignin in reaction wood in the gymnosperm Gnetum gnemon L.
- Sodium sulphite pulping of Scots pine under neutral and mildly alkaline conditions (NS pulping)
- Characterization of dissolving pulp by fibre swelling in dilute cupriethylenediamine (CUEN) solution in a MorFi analyser
- Hot water extraction of Norway spruce (Picea abies [Karst.]) bark: analyses of the influence of bark aging and process parameters on the extract composition
- Statistical modeling of pressurized hot-water batch extraction (PHWE) to produce hemicelluloses with desired properties
- Lignification of ray parenchyma cells (RPCs) in the xylem of Phellodendron amurense Rupr.: quantitative and structural investigation by TOF-SIMS and thioacidolysis of laser microdissection cuts of RPCs
- Relationship between the hydrophilicity of lignin dispersants and their performance towards pesticide particles
- Preparation of electric double layer capacitors (EDLCs) from two types of electrospun lignin fibers
- Simultaneous measurement of elastic constants of full-size engineered wood-based panels by modal testing
- Development of an industrial applicable dielectric barrier discharge (DBD) plasma treatment for improving bondability of poplar veneer
- Mode of action of brown rot decay resistance of thermally modified wood: resistance to Fenton’s reagent