https://orcid.org/0000-0003-3428-4534
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ABSTRACT
The aim of this work is to investigate the chemical, physical, thermal and mechanical properties of bio-oil-phenol–formaldehyde (BPF) resin synthesized with catalytic pyrolysis oil. In this way, catalysed and uncatalysed pyrolysis processes were carried out in a vacuum pyrolysis reactor at the temperature of 500°C. Sodium hydroxide (NaOH) and potassium hydroxide (KOH) were used as catalysts in the catalysed pyrolysis processes. The BPF resins were synthesized using the bio-oil at 10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt% phenol replacement levels. The chemical composition of the bio-oil was analyzed by GC/MS analysis. The thermal characteristics and chemical structures of the resins were characterized by TGA and FT-IR analysis, respectively. Physical properties including pH, viscosity, solid content and gel time of the resins were determined. Oriented Strand Board (OSB) were manufactured to evaluate the mechanical performances of modified resins. The BPF resins were successfully synthesized with phenol, bio-oil and formaldehyde. BPF resins synthesized with catalytic bio-oils showed better thermal stability than BPF resin synthesized with non-catalytic bio-oil. The mechanical test results showed that the IB strengths of OSBs made with BPF resins synthesized by use of NaOH exhibited better performance than OSBs commercial PF made.
Acknowledgements
This work was supported by TUBITAK (The Scientific and Technological Research Council of Turkey) [Project grant number: 115O453]. This study was made as a PhD thesis by Erkan Sami KÖKTEN in the Institute of Natural and Applied Sciences, Karabük University, Karabük 2018 [Adviser: Assoc. Prof. Dr. Günay ÖZBAY].