Superhydrophobic/Superoleophilic Polycarbonate/Carbon Nanotubes Porous Monolith for Selective Oil Adsorption from Water

et al. 2019

Macro Materials & Eng

Self Cite

The thermal degradation behavior and kinetics are important to understand the nature of polymers. In this work, the thermal degradation behavior and kinetics of polycarbonate (PC) monoliths with a three dimension (3D) continuous interconnected porous structure is investigated. Thermogravimetric analysis reveals that the thermal stability of the PC monoliths shows a significant reduction compared to pristine PC due to its 3D porous structure, which drastically increases the heating surface area during the thermal degradation process. An interesting second degradation stage at 480–550 °C is observed for PC monoliths from the barrier effect formed by the collapse and coalescence of the porous structure at high temperature, which is further confirmed by volatile and solid char analyses. The kinetic analysis suggests that the PC monolith shows a low degradation activation energy (Eα ) at the first degradation stage, which increases rapidly and goes beyond the Eα of pristine PC at the second degradation stage.

Section: Introductionsupporting

confidence: 91%

Thermal Degradation Behavior and Kinetics of 3D Porous Polycarbonate Monoliths

Feng

et al. 2019

Macro Materials & Eng

Self Cite

“…[1][2][3][4][5][6][7][8][9] Among multifarious methods that use of oil skimmers, chemical dispersants, adsorbents, in situ burning, and microorganisms, [10][11][12][13][14] adsorption is considered as the most economical and efficient choice due to low cost, simple operation, and prevention of secondary pollution. 15 However, most conventional adsorption materials show low oil adsorption capacity and poor selectivity for the oil-water mixture. Thus, the development of novel adsorption materials for the cleanup oil polluted water is of great signicance.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic and superoleophilic graphene aerogel for adsorption of oil pollutants from water

Liu

et al. 2019

RSC Adv.

“…To improve the performance, a common method is the addition of appropriate nanofillers into polymer matrix . Compared with neat TPU, the addition of carbon‐based nanoparticles can improve the mechanical properties and thermal stability of the composites, thereby enhancing the solid particle erosion resistance of the composite.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Solid Particle Erosion Properties of Thermoplastic Polyurethane‐Carbon Nanotube Nanocomposites

Dong

Liu

et al. 2019

Macro Materials & Eng

Self Cite

A co‐coagulation method combined with hot pressing technique is successfully applied to fabricate thermoplastic polyurethane (TPU) nanocomposites with different contents of carbon nanotubes (CNTs). Obviously, the mechanical and thermal properties of the nanocomposites are improved with increasing the CNT content. In addition, the existence of hydrogen bonding between CNTs and polymer matrix is demonstrated. Furthermore, the influences of impact parameters on solid particle erosion behavior are investigated systematically. The surface roughness and line roughness are also investigated to illustrate the mechanism of solid particle erosion. As elastic nanocomposites, the maximum and minimum erosion rate (ER) occur at 30° and 90°. The ER is relatively small when the impact velocity is at 10 m s−1, then is increased rapidly between 20 and 30 m s−1. As the size of impact particles increases to 300 µm, a rapid increase of ER occurs between 10 and 20 m s−1. All these results indicate CNTs improve the erosion resistance of TPU matrix.