Adhesion and Cohesion Performance of Polyurethane Made of Bio-Polyol Derived from Modified Waste Cooking Oil for Exterior Grade Plywood

• Published in: Macromolecular Materials and Engineering
• Main Author: Maulana S.; Setiawan I.P.; Pusbanarum D.; Antov P.; Iswanto A.H.; Kristak L.; Lee S.H.; Lubis M.A.R.
• Format: Article
• Language: English
• Published: John Wiley and Sons Inc 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201150310&doi=10.1002%2fmame.202400225&partnerID=40&md5=0c2be77d0ae84e0019ee8b8cd25053ef

This study explored the feasibility of Waste Cooking Oil (WCO)-based Bio-Polyurethane (Bio-PU) as an eco-friendly alternative to petroleum-derived polyols in plywood adhesives. The objective is to evaluate the impact of varied WCO concentrations and methylene diphenyl diisocyanate (MDI) levels on Bio-PU and plywood performance. The Bio-PU's characteristics, rheology, and functional groups are studied. Plywood made from three layers of 100 mm x 100 mm × 2 mm rubberwood (Hevea brasiliensis) veneer is bonded with Bio-PU using a dual spread approach at 180 g.m−2, hot pressed at 120 °C and 1 MPa for 4 min. The laboratory-fabricated plywood is tested for physical, mechanical, and adhesive properties. Results showed that Bio-PU exhibited unique adhesive characteristics, with excellent adhesive strength, despite a slight decrease with higher WCO concentrations. WCO insertion do not compromise delamination resistance. FTIR analysis confirmed successful polyurethane chain synthesis. This research highlighted the potential of WCO-based Bio-PU's as a sustainable, high-performance plywood adhesive. © 2024 The Author(s). Macromolecular Materials and Engineering published by Wiley-VCH GmbH.