2026-10-11T17:09:34Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34018337 2026-09-28T19:38:10Z category_1 category_4 category_146 category_7 category_8 category_21 category_272 category_873 category_734 category_61 category_133 portal_87 item_type_6 month_year_09_2026

Tailoring bio-based polyurethane durable wood coating from linoleic acid methyl ester polyol: a comparative assessment of aromatic and aliphatic isocyanate networks Rutvik D. Joshi (25133168) Naved I. Malek (808409) Vimalkumar Prajapati (11504338) Bharatkumar Z. Dholakiya (5325038) Biophysics Biochemistry Space Science Medicine Microbiology Biotechnology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Biological Sciences not elsewhere classified Developmental Biology Plant Biology Aromatic aliphatic in-vitro studies linoleic acid methyl ester polyol polyurethane wood coating renewable feedstock <p>The growing demand for sustainable coating materials has promoted the development of bio-based polyurethanes from renewable feedstocks. In this study, a polyurethane wood coating was synthesized using a linoleic acid methyl ester polyol (LP) prepared via epoxidation and ring-opening of linoleic acid methyl ester (LAME). The physicochemical properties of the synthesized polyol were evaluated by refractive index, specific gravity, and hydroxyl value measurements, while the successful synthesis of LP and polyurethane was confirmed by FTIR, ¹H NMR, and ¹³C NMR analyses. Polyurethane coatings prepared using aromatic MDI and aliphatic HDI were evaluated for thermal stability, morphology, wettability, adhesion, hardness, chemical resistance, and antibacterial activity. The MDI-based coating exhibited higher thermal stability, with a maximum degradation temperature of 502°C compared to 472°C for the HDI-based coating. Both coatings exhibited antibacterial activity against <i>Staphylococcus aureus, Bacillus cereus</i>, and <i>Escherichia coli</i>, with the highest inhibition observed against <i>Staphylococcus aureus</i> and the lowest against <i>Escherichia coli</i>. Overall, the results highlight LP as a promising polyol for the development of sustainable, high-performance polyurethane wood coatings.</p> 2026-09-28T19:38:10Z Text Journal contribution 10.6084/m9.figshare.34018337.v1 https://figshare.com/articles/journal_contribution/Tailoring_bio-based_polyurethane_durable_wood_coating_from_linoleic_acid_methyl_ester_polyol_a_comparative_assessment_of_aromatic_and_aliphatic_isocyanate_networks/34018337 CC BY 4.0