This study evaluates the efficiency of castor oil–based polyurethane foams for oil sorption S10 and S500, focusing on the influence of the pores’ size. Different foams were produced by varying the polyol: isocyanate ratio (1:0.3; 1:0.5; 1:1.0; 1:1.5; and 1:2.0). The physicochemical properties, morphology, density, and Hg porosity were determined. The sorption capacity was influenced by exposure time, oil viscosity, and concentration of the reagents, considering variations in the hydrophobicity, void content, and morphology. The results showed that the foam produced at an in the same mass proportion (PU_C) has a higher sorption capacity in exposure time from 25 to 40 h due to higher void content and larger pore diameter size. It was observed that the lower viscosity of S10 diesel contributes to the higher sorption efficiency compared to S500 one. The Taguchi method corroborated the mentioned results, indicating a higher sorption trend by varying the reagent concentration and exposure times.

本研究评估了蓖麻油基聚氨酯泡沫对 S10 和 S500 的吸油效率，重点关注孔尺寸的影响。通过改变多元醇：异氰酸酯的比例（1:0.3；1:0.5；1:1.0；1:1.5；和 1:2.0）生产不同的泡沫。测定了理化性质、形态、密度和汞孔隙率。考虑到疏水性、空隙含量和形态的变化，吸附能力受暴露时间、油粘度和试剂浓度的影响。结果表明，在相同质量比（PU _C) 由于更高的空隙含量和更大的孔径尺寸，在 25 到 40 小时的暴露时间内具有更高的吸附能力。据观察，与 S500 柴油相比，S10 柴油的较低粘度有助于提高吸附效率。田口方法证实了上述结果，表明通过改变试剂浓度和暴露时间有更高的吸附趋势。