Efficiency of castor oil–based polyurethane foams for oil sorption S10 and S500: Influence of porous size and statistical analysis

Author:

Alves Fillip C1ORCID,dos Santos Vanessa F2,Monticeli Francisco M1,Ornaghi Heitor3ORCID,Barud Hernane da Silva4,Mulinari Daniella R5

Affiliation:

1. Department of Materials and Technology, School of Engineering (FEG) – CEP, Sao Paulo State University (UNESP), Guaratinguetá, Brazil

2. Department of Energy, School of Engineering (FEG) – CEP, Sao Paulo State University (UNESP), Guaratinguetá, Brazil

3. Federal University for Latin American Integration (UNILA), Foz do Iguaçu, Brazil

4. Araraquara University – UNIARA, Araraquara, Brazil

5. Department of Mechanics and Energy, UERJ, Resende, Brazil

Abstract

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 (PUC) 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.

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Ceramics and Composites

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