Bio-inspired lightweight polypropylene foams with tunable hierarchical tubular porous structure and its application for oil-water separation

Huang, Pengke; Wu, Fei; Shen, Bin; Ma, Xinxue; Zhang, Yongqing; Wu, Minghui; Wang, Jin; Liu, Zhihua; Luo, Haibin; Zheng, Wenge

doi:10.1016/j.cej.2019.03.289

Cited by 80 publications

(46 citation statements)

References 62 publications

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“…Adding HMSPP changed the extensional viscosity of PP blends and may improve the foaming ability of PP resin. [ 22, 29 ]…”

Section: Resultsmentioning

confidence: 99%

“…Huang et al blended PP with HMSPP at different ratios and created tubular open‐cell foam by foam extrusion. [ 22 ] They showed that the loading level of HMSPP may significantly change the cell morphology and the formation of the tubular structure. The tubular foam could be used for oil/water separation; however, unlike other absorbents, the extruded tubular foam contained a solid skin layer, and the expansion ratio of the foam was less than 15 times.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of polypropylene/high‐melt‐strength PP open‐cell foam for oil absorption

Yeh

Tsai

Gebremedhin

et al. 2021

Polymer Engineering & Sci

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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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“…Adding HMSPP changed the extensional viscosity of PP blends and may improve the foaming ability of PP resin. [ 22, 29 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of polypropylene/high‐melt‐strength PP open‐cell foam for oil absorption

Yeh

Tsai

Gebremedhin

et al. 2021

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…As shown in Fig. 12, the absorption capacities of the oil collector for these oils were in the range of 39.67-79.56 g/g, much higher than some other oil-absorbing materials such as a biomimetic polypropylene foam (9.4 g/g) [55], electrospinning carbon nanofibrous membrane (44.9 g/g) [56] and [ADT-(CF 3 ) 2 ] modified polyurethane sponge (35.0-77.2 g/g) [57].…”

Section: Durability Of Dps Meshes In Harsh Environmentsmentioning

confidence: 86%

Mussel inspired durable pH-responsive mesh for high-efficient oil/water separation

et al. 2020

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“…In natural-fiber-reinforced composites, the presence of different dimensional dispersions and the interfacial strength between the fiber-matrix are the most challenging in comparison to synthetic-based composites. Natural fibers are irregular (uneven cell structure), non-homogeneous, and their cellular hierarchical structures are filled with cavities or lumens of different dimensions (Sanjay et al, 2018;Huang et al, 2019). Their integration into a polymer matrix generates compatibility issues that can only be resolved partially by fiber surface treatment by a broad dispersion of properties in the final laminate of composites (Sanjay et al, 2019;Yusof et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Infrared Thermographic and Ultrasonic Inspection of Randomly-Oriented Short-Natural Fiber-Reinforced Polymeric Composites

et al. 2021

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Non-destructive testing (NDT) is not only primarily concerned with the detection of discontinuities, but also with the mechanical properties. However, the usage of NDT in understanding the mechanical effect that leads to a failure of composites and the damage mechanisms are still not thoroughly studied, as much of the NDT approaches are widely used to maintain the structural integrity to preserve quality assurance. This work aims to investigate the application of infrared thermographic and ultrasonic in evaluating randomly-oriented short-natural-fiber-reinforced phenolic composites. The composites were made from short palm fibers of various sizes between 1.18–0.6 mm, 0.6–0.3 mm, and less than 0.3 mm at 20 and 40 wt%, respectively. The tensile results obtained from the parallel testing of the composites using infrared thermography, where the temperature and time changes on the tested samples were continuously recorded. The peak in the temperature-time graph indicated a macro crack growth and matrix cracking in the form of dissipated energy. Ultrasonic inspection were carried out on the impacted specimens. A scan of the ultrasonic testing on the phenolic composites found presence of a back wall in neat phenolic and was eradicated with fiber reinforcement due to attenuation and energy dissipation. The attenuation coefficient of composites was calculated with the aid of the A-scan. Therefore, it is concluded that ultrasonic inspection on the natural fiber is limited due to the large scattering of wave and energy loss due to attenuation, while infrared thermography is suitable to inspect natural-fiber-reinforced composites when monotonic loadings are applied.

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Bio-inspired lightweight polypropylene foams with tunable hierarchical tubular porous structure and its application for oil-water separation

Cited by 80 publications

References 62 publications

Preparation of polypropylene/high‐melt‐strength PP open‐cell foam for oil absorption

Preparation of polypropylene/high‐melt‐strength PP open‐cell foam for oil absorption

Mussel inspired durable pH-responsive mesh for high-efficient oil/water separation

Infrared Thermographic and Ultrasonic Inspection of Randomly-Oriented Short-Natural Fiber-Reinforced Polymeric Composites

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