Fabrication of outstanding thermal-insulating, mechanical robust and superhydrophobic PP/CNT/sorbitol derivative nanocomposite foams for efficient oil/water separation

Zhao, Jinchuan; Huang, Yifeng; Wang, Guilong; Qiao, Yongna; Chen, Zuolong; Zhang, Aimin

doi:10.1016/j.jhazmat.2021.126295

Cited by 47 publications

(6 citation statements)

References 92 publications

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“…Polymer foams, as a sort of lightweight plastic product, cover all sectors of life and industrial manufacture owing to their outstanding attributes, comprising low costs, higher cushioning performance, excellent noise reduction, heat insulation, shock dissipation, and great specific strength. Due to these characteristics, they are used worldwide in numerous areas, such as construction, impact resistance, logistics packing, aerospace, and transport materials [ 1 , 2 , 3 ]. The growth and utilization of polymer foams can considerably improve energy efficacy and diminish energy consumption, contributing greatly to carbon neutrality and peaking [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of High-Value Bio-Based Polyamide 12,36 Microcellular Foams with Excellent Dimensional Stability and Shape Recovery Properties

Chen,

Ranganathan,

Mutharani

et al. 2024

Polymers

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The search for alternatives to petroleum-based thermoplastic polyamide elastomers (TPAEs) has recently drawn great interest. In this study, a bio-massed TPAE, PA12,36, was synthesized using 1,12-dodecanediamine (DDA) and fatty dimer acid (FDA, PripolTM1009) precursors via catalyst and solvent-free melt polycondensation. The molecular structure and molecular weight of the PA12,36 were characterized by 1H NMR, FTIR, and GPC. PA12,36 displayed a low melting temperature of 85.8 °C, an initial degradation temperature of 425 °C, and a glass-transition temperature of 30.4 °C, whereas it sustained satisfactory tensile strength (10.0 MPa) and superior strain at break (1378%). Furthermore, PA12,36 was foamed by supercritical CO2, and the cell size, cell density, and porosity were determined. The entangled long-chained FDA component generated a physically crosslinked network, which promoted the melt viscosity of PA12,36 against elongations of foam cell growth and increased foamability significantly. As a result, uniform structured cellular foams with a cell diameter of 15–24 µm and high cell density (1011 cells/cm3–1012 cells/cm3) were successfully achieved. The foaming window was widened from 76 to 81 °C, and the expansion ratio was increased from 4.8 to 9.6. Additionally, PA12,36 foam with a physically crosslinked structure presented a better creep shape recovery percentage (92–97.9%) and sturdier dimensional stability. This bio-based PA12,36 foam is a promising candidate to replace petroleum-based thermoplastic elastomer foams for engineering applications, particularly shoe soles.

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Section: Introductionmentioning

confidence: 99%

Synthesis of High-Value Bio-Based Polyamide 12,36 Microcellular Foams with Excellent Dimensional Stability and Shape Recovery Properties

Chen,

Ranganathan,

Mutharani

et al. 2024

Polymers

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“…Mi et al utilized twin-screw extrusion and supercritical carbon dioxide foaming to fabricate PP/poly(tetrafluoroethylene) (PTFE) composite foams by blending nanosized PTFE particles with PP, yielding commendable oil absorption performance . Zhao et al developed a superhydrophobic PP/CNT/sorbitol derivative nanocomposite open-cell foam by polymer blending and the subsequent foaming process, demonstrating excellent oil absorption efficiency and high reusability . Nonetheless, the high cost associated with PTFE particles and carbon nanotubes renders them unsuitable for widespread industrial application.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Open-Cell Long-Chain Branched Polypropylene Foams for Oil Absorption

Li,

Hu,

Yan

et al. 2023

ACS Omega

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This study aimed to prepare open-cell foams using a blend of long-chain branched polypropylene and polyolefin elastomer (LCBPP/POE) for the production of reusable oil absorbents. The supercritical CO 2 foaming process was conducted using a two-step batch rapid depressurization method. This unique two-step foaming approach significantly expanded the temperature and pressure windows, resulting in more uniform cells with smaller sizes, ultimately leading to higher expansion ratios and an increased open cell content. The foaming process was optimized by adjusting parameters, such as the LCBPP/POE ratio, foaming temperature, and foaming pressure, reaching a maximum open cell content of 97.6% and a maximum expansion ratio of 48. The influence of polypropylene (PP) crystallization was investigated with the aid of scanning electron microscopy and differential scanning calorimetry. Furthermore, the hydrophobic and lipophilic characteristics of the LCBPP/POE open-cell foam were determined via contact angle measurements and oil/water separation tests. Oil absorption tests revealed that the blended LCBPP/POE foam has a higher oil absorption capacity than that of the pure LCBPP foam. The cyclic oil absorption tests demonstrated the outstanding ductility and recoverability of the LCBPP/POE open-cell foam in comparison to those of the pure LCBPP foam. Over 10 cycles, the LCBPP/POE foam maintained a substantial adsorption capacity, retaining 99.3% of its initial oil absorption capacity. With its notable features, including a high open cell content, excellent hydrophobic and lipophilic characteristics, superior oil absorption capacity, impressive cyclic oil absorption performance, and robust reusability, LCBPP/POE open-cell foams exhibit significant promise as potential oil adsorbents for use in oil spill cleanup applications.

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“…Owing to their unique structural characteristics, including low density, high porosity, chemical inertness, and good mechanical flexibility, carbon-based 3D porous materials have been proven to be promising materials for water remediation, especially oil/organic solvent absorption. , Based on the used raw materials, carbon-based porous materials can be categorized into four types, including carbon nanotube (CNT)-, graphene-, pyrolyzed synthetic polymer/organic-, and biomass-based 3D porous materials . Although the porous materials prepared from CNTs or graphene exhibit good absorption properties, , their practical applications are still limited by the laborious strategies, expensive precursors, complex equipment, and small-scale output. In comparison, there is a trend to produce porous carbon foams (CFs) from some widely available precursors, melamine foams for example, owing to their low cost and rich source .…”

Section: Introductionmentioning

confidence: 99%

Facile Construction of Robust and Powerful Biochar-Decorated Porous Foams with Super-Wettability for Automatic and Continuous Oil Spill Remediation

Zhao

Wang

et al. 2023

Ind. Eng. Chem. Res.

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Carbon-based porous materials have been demonstrated to be promising absorbents for oil spill remediation. However, most reported materials either suffer from poor performance or complicated fabrication procedures. In addition, to continuously drive the oil absorption and collection, auxiliary equipment (e.g., pump) is always necessary, which further increases the complexity and cost for oil spill clean-up. Herein, we develop a facile and scalable strategy to produce biochar-decorated porous materials with tunable super-wettability for highly efficient oil/ water separation via pyrolysis of the melamine foam dip-coated with cellulose. The pyrolyzed cellulose forms a layer of biochar mesh wrapped around the skeleton of carbon foam like a soft armor, which remarkably enhances the mechanical properties and super-wettability of the obtained materials. Consequently, the resultant biochar mesh-reinforced carbon foam exhibits ultrahigh sorption capacity toward various organic/oil liquids (up to 80−170 times of its own weight) and excellent reusability. More importantly, we first demonstrate that the BMCF is able to in situ automatically and continuously clean up and collect oil spill from the water surface very rapidly (as high as 283 000 L m −2 h −1 ) without using any auxiliary equipment, which is much simpler and more efficient than those in previous reports. The facile synthesis process and astonishing performance may bring carbon-based porous materials a step closer to the real application in low viscosity oil spill remediation.

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Fabrication of outstanding thermal-insulating, mechanical robust and superhydrophobic PP/CNT/sorbitol derivative nanocomposite foams for efficient oil/water separation

Cited by 47 publications

References 92 publications

Synthesis of High-Value Bio-Based Polyamide 12,36 Microcellular Foams with Excellent Dimensional Stability and Shape Recovery Properties

Synthesis of High-Value Bio-Based Polyamide 12,36 Microcellular Foams with Excellent Dimensional Stability and Shape Recovery Properties

Preparation of Open-Cell Long-Chain Branched Polypropylene Foams for Oil Absorption

Facile Construction of Robust and Powerful Biochar-Decorated Porous Foams with Super-Wettability for Automatic and Continuous Oil Spill Remediation

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