期刊
POLYMER ENGINEERING AND SCIENCE
卷 61, 期 4, 页码 1139-1149出版社
WILEY
DOI: 10.1002/pen.25654
关键词
blending; foams; polypropylene; rheology
资金
- Ministry of Science and Technology, Taiwan [MOST 109-2622-8-011-017 -TE4, MOST 106-3114-8-002-001, MOST 108-2622-8-011-004 -TE4]
The study found that adding high-melt-strength polypropylene can increase the foam expansion ratio, open-cell content, and widen the foam processing window, resulting in improved oil absorption. Additionally, low oil viscosity can lead to higher oil absorption.
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.
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