PAPER making! g! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® Volume 9, Number 2, 2023
manufacturing either new MDF panels or wood polymer composites (WPC). When utilized for manufacturing new MDF, even the utilisation of 100 % RF did not cause significantly lower strength properties than that of panels made of 100 % VF. However, introducing the screw press process for drying the RF after the disintegration caused decreased strength properties compared to the original MDF panels containing VF. Although, mixing screw- pressed and air-dried RF with VF improved these properties, the strength of the panels containing solely VF were not achieved. Furthermore, WPC formulations containing RF exhibited improved mechanical and water-related properties, even though they provided similar physico-mechanical results to those containing VF. The study has also shown that obtained DW exhibited higher pH values, N as well as formaldehyde contents while containing significant levels of reducing sugar and equivalents when compared to demineralized water. The findings of this dissertation not only make several scientific contributions to the current literature, but also suggest utilizing RF obtained after the thermo-hydrolytic disintegration of waste MDF for manufacturing new MDF and WPC to ensure a more efficient utilization of these wood resources. Further research might be carried out to explore how different mixing proportions of RF and VF effect the strength properties of these possible utilisation areas, especially new MDF.
Technical Abstracts
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