Synthesis of multifunctional polyurethane wood coating from epoxidized soybean oil and CO2-based polyol

Traditional polyurethane coatings are typically synthesized from non-renewable petrochemical resources, which contradicts modern environmental principles. This paper aims to develop eco-friendly polyurethane wood coatings and enhance coating properties. CO2-based polyurethane (PU) was first synthesi...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2025-03, Vol.709, p.136162, Article 136162
Main Authors: Yuan, Hao, Guo, Hanxiang, Huang, Zhaosheng, Zhang, Ping, Wang, Zhe, Jin, Chunde
Format: Article
Language:English
Subjects:
CO2-based polyols
Epoxidized soybean oil
Polyurethane
Wood coatings
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Summary:Traditional polyurethane coatings are typically synthesized from non-renewable petrochemical resources, which contradicts modern environmental principles. This paper aims to develop eco-friendly polyurethane wood coatings and enhance coating properties. CO2-based polyurethane (PU) was first synthesized by using CO2-based polyols instead of petroleum-based polyols and reacting them with isocyanates. The properties of PU coatings such as corrosion resistance, hardness, and adhesion were improved by introducing soybean oil-based polyols (P-ESO) from ring-opening reactions of epoxidized soybean oil (ESO) during the synthesis process. P-ESO-CO2-based PU (SPU) wood coatings demonstrated superior tensile strength and adhesion values of 0.77 MPa and 3.66 MPa, respectively, and exhibited a hydrophobicity with a water contact angle of 102°. Hence, SPU holds greater promise and potential for future development in the field of environmentally friendly wood coatings. [Display omitted]
ISSN:0927-7757
DOI:10.1016/j.colsurfa.2025.136162