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.

中文翻译：

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聚丙烯/高强度聚丙烯开孔泡沫的制备，用于吸油

漏油不仅造成重大的经济损失，而且造成了巨大的经济损失。它们也危害环境。在这项研究中，高熔点聚丙烯（HMSPP）和线性聚丙烯（PP）以不同的比例混合并通过超临界CO ₂发泡在各种温度和压力下开发用于吸油应用的开孔泡沫。实验结果表明，添加HMSPP可以增加泡沫膨胀率和开孔含量，并且随着HMSPP含量的增加，泡沫加工窗口会扩大。吸油实验结果表明，吸油量随泡沫膨胀率的增加而增加，低吸油粘度导致吸油量高。另外，吸油实验10次循环后吸油量保持不变。吸油动力学研究表明，吸油过程符合拟二阶定律。