Preparation of polypropylene/high-melt-strength PP open-cell foam for oil absorption
Journal
Polymer Engineering and Science
Journal Volume
61
Journal Issue
4
Pages
1139-1149
Date Issued
2021
Author(s)
Abstract
Oil spills not only cause significant economic losses; they also harm the environment. In this study, high-melt-strength polypropylene (HMSPP) and linear polypropylene (PP) were compounded at different ratios and foamed by supercritical CO2 at various temperatures and pressures to develop open-cell foams for oil absorption applications. The experimental results show that adding HMSPP increased the foam expansion ratio and the open-cell content and that the foam processing window widened with increasing HMSPP content. The oil absorption experiment results show that the amount of oil absorption increased with the foam expansion ratio and that low oil viscosity resulted in high oil absorption. In addition, the amount of oil absorption remained unchanged after 10 cycles of oil absorption experiments. The oil absorption kinetics study shows that the oil absorption process complied with the pseudo-second-order law. ? 2021 Society of Plastics Engineers
Subjects
Expansion; Losses; Oil spills; Economic loss; Foam expansion; Foam processing; High melt strengths; Oil absorption; Open-cell foams; Pseudo second order; Supercritical CO2; Polypropylenes
Type
journal article