2026-10-06T12:12:29Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34005123 2026-09-27T14:54:14Z category_24046 item_type_3 month_year_09_2026

Dataset: Intrinsically Mold-Resistant and Formaldehyde-Free Oxidized Camellia Meal-Based Adhesivefor Wood-Based Panelswith Excellent Water Resistance Xinyi Chen (25116147) Wood processing wood adhesives The development of bio-based wood adhesives exhibiting robust bonding performance, excellent water resistance, and long-term mold resistance is critical for the sustainable manufacturing of wood-based panels. In this work, a formaldehyde-free adhesive was developed by crosslinking oxidized camellia meal (OCM), a non-edible agricultural residue, with hyperbranched polyurea (HBPU). Spectroscopic and structural analyses supported the formation of a crosslinked network involving imine and amide linkages and hydrogen-bonding interactions, which improved the hydrolytic and thermal stability of the cured adhesive. At an HBPU loading of 20 wt%, the OCM–HBPU adhesive achieved shear strengths of 1.22 MPa under dry conditions, 1.15 MPa after immersion in water at 63 °C, and 1.14 MPa after boiling-water treatment. Particleboards bonded with the optimized adhesive exhibited an internal bond strength of 1.70 MPa, a modulus of rupture of 22.22 MPa, and a modulus of elasticity of 3232.60 MPa. No visible mold growth was observed on the adhesive samples over 60 days at 30 °C and 95% relative humidity without added synthetic biocides. A preliminary 21-day soil-based assay showed no obvious inhibition of mung bean germination or seedling growth under the tested conditions. These results support the potential of OCM–HBPU as a formaldehyde-free, water-resistant, and mold-resistant adhesive for wood-based panels. 2026-09-27T14:54:14Z Dataset Dataset 10.6084/m9.figshare.34005123.v1 https://figshare.com/articles/dataset/_b_Dataset_b_b_Intrinsically_b_b_Mold-Resistant_b_b_b_b_and_b_b_Formaldehyde-Free_b_b_b_b_Oxidized_b_b_b_b_Camellia_Meal-Based_Adhesive_b_b_for_b_b_Wood-Based_Panels_b_b_with_Excellent_Water_Resist_b_b_ance_b_/34005123 CC BY 4.0