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Zhang W, Zhang M, Chen Q, Liu X. Stereo-complex polylactide composite aerogel for crude oil adsorption. Int J Biol Macromol 2024; 263:130283. [PMID: 38378113 DOI: 10.1016/j.ijbiomac.2024.130283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/25/2024] [Accepted: 02/16/2024] [Indexed: 02/22/2024]
Abstract
Adsorption materials are a cost-effective and simple method for oil spill remediation, but their efficiency is limited by high crude oil viscosity. Additionally, non-degradable materials pose another risk of secondary pollution, such as microplastic debris. Here, an environmentally-friendly stereo-complex polylactide composite (SCC) aerogel were developed via water-assisted thermally induced phase separation. The SCC with 3 wt% carbon nanotubes had a hierarchical structure of micro/nanoscale pores and high content of stereo-complex crystallites (35.7 %). Along with the excellent water repellency (water contact angle: 157°), SCC aerogel was 2.7 times as resistant to hydrolysis than poly(l-lactide) aerogel (Ph = 13, 37 °C). Additionally, a maximum absorption capacity of 41.2 g g-1 and over 97 % oil/water separation efficiency after 10 cycles were obtained in low viscosity conditions; while in high viscosity conditions, it displayed excellent photothermal performance, reaching a surface temperature of 85 °C under 1 sunlight, reducing crude oil absorption time from 42 min to 60 s (97.6 %-time savings). Moreover, it facilitated continuous crude oil spill recovery under sunlight with an adsorption rate of 3.3 × 104 kg m-3 h-1. The SCC aerogel presents a potential route for utilizing solar energy in crude oil adsorption applications without additional environmental burden.
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Affiliation(s)
- Weijian Zhang
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China; State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Mingtao Zhang
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China.
| | - Qiang Chen
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xianhu Liu
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China.
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Hu J, Harandi HB, Chen Y, Zhang L, Yin H, He T. Anisotropic gypsum scaling of corrugated polyvinylidene fluoride hydrophobic membrane in direct contact membrane distillation. WATER RESEARCH 2023; 244:120513. [PMID: 37651864 DOI: 10.1016/j.watres.2023.120513] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/11/2023] [Accepted: 08/19/2023] [Indexed: 09/02/2023]
Abstract
Membrane distillation (MD) technology has gained a lot of attention for treatment of geothermal brine, high salinity waste streams. However, mineral scaling remains a major challenge when treating complex high-salt brines. The development of surface-patterned superhydrophobic membranes is one of the core strategies to solve this problem. We prepared flat sheet membranes (F-PVDF) and hydrophobic membranes with micron-scale corrugated pattern (C-PVDF) using a phase separation method. Their scaling behavior was systematically evaluated using calcium sulfate solutions and the impact of the feed flow was innovatively investigated. Although C-PVDF shows higher contact angle and lower sliding angle than F-PVDF, the scaling resistance of C-PVDF in the perpendicular flow direction has worst scaling resistance. Although the nucleation barrier of the corrugated membrane is the same at both parallel and perpendicular flow directions based on the traditional thermodynamic nucleation theory, experimental observations show that the C-PVDF has the best scaling resistance in the parallel flow direction. A 3D computational fluid dynamics (CFD) model was used and the hydrodynamic state of the pattern membranes was assessed as a determinant of the scaling resistance. The corrugated membrane with parallel flow mode (flow direction in parallel to the corrugation ridge) induces higher fluid velocity within the channel, which mitigated the deposition of crystals. While in the perpendicular flow mode (flow direction in perpendicular to the corrugation ridge), the solutions confined in the corrugated grooves due to vortex shielding, which aggravates the scaling. These results shed light on the mechanism of scaling resistance of corrugated membranes from a hydrodynamic perspective and reveal the mechanism of anisotropy exhibited by corrugated membranes in MD.
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Affiliation(s)
- Jiaqi Hu
- Laboratory for Membrane Materials and Separation Technologies, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hesam Bazargan Harandi
- University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Yecang Chen
- James Watt School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Liwei Zhang
- University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China.
| | - Huabing Yin
- James Watt School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Tao He
- Laboratory for Membrane Materials and Separation Technologies, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Martinez J, Fan S, Rabade S, Blevins AK, Fung K, Killgore JP, Perez SB, Youngbear K, Carbrello C, Foley S, Ding X, Long R, Castro R, Ding Y. Capillary infiltration kinetics in highly asymmetric porous membranes and the resulting debonding behaviors. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Fan S, Blevins A, Martinez J, Ding Y. Effects of Co-diluent on the pore structure, patterning fidelity, and properties of membranes fabricated by lithographically templated thermally induced phase separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Low-cost process to utilize sodium salts for porous cellulose materials. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Wang W, Zhang Z, Ma L, Xu X, Zhang P, Yu H. Explorations of complex thermally induced phase separation (C-TIPS) method for manufacturing novel diphenyl ether polysulfate flat microporous membranes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Martinez J, Aghajani M, Lu Y, Blevins AK, Fan S, Wang M, Killgore JP, Perez SB, Patel J, Carbrello C, Foley S, Sylvia R, Long R, Castro R, Ding Y. Capillary bonding of membranes by viscous polymers: Infiltration kinetics and mechanical integrity of the bonded polymer/membrane structures. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xing W, Ma Z, Wang C, Lu J, Gao J, Yu C, Lin X, Li C, Wu Y. Metal-organic framework based molecularly imprinted nanofiber membranes with enhanced selective recognition and separation performance: A multiple strengthening system. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119624] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Zhu P, Zhang H, Lu H. Preparation of Polyetherimide Nanoparticles by a Droplet Evaporation-Assisted Thermally Induced Phase-Separation Method. Polymers (Basel) 2021; 13:polym13101548. [PMID: 34065994 PMCID: PMC8150268 DOI: 10.3390/polym13101548] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 11/23/2022] Open
Abstract
The droplet evaporation effect on the preparation of polyetherimide (PEI) nanoparticles by thermally induced phase separation (TIPS) was studied. PEI nanoparticles were prepared in two routes. In route I, the droplet evaporation process was carried out after TIPS. In route II, the droplet evaporation and TIPS processes were carried out simultaneously. The surface tension and shape parameters of samples were measured via a drop shape analyzer. The Z-average particle diameter of PEI nanoparticles in the PEI/dimethyl sulfoxide solution (DMSO) suspension at different time points was tested by dynamic light scattering, the data from which was used to determine the TIPS time of the PEI/DMSO solution. The natural properties of the products from both routes were studied by optical microscope, scanning electron microscope and transmission electron microscope. The results show that PEI nanoparticles prepared from route II are much smaller and more uniform than that prepared from route I. Circulation flows in the droplet evaporation were indirectly proved to suppress the growth of particles. At 30 °C, PEI solid nanoparticles with 193 nm average particle size, good uniformity, good separation and good roundness were obtained. Route I is less sensitive to temperature than route II. Samples in route I were still the accumulations of micro and nanoparticles until 40 °C instead of 30 °C in route II, although the particle size distribution was not uniform. In addition, a film structure would appear instead of particles when the evaporation temperature exceeds a certain value in both routes. This work will contribute to the preparation of polymer nanoparticles with small and uniform particle size by TIPS process from preformed polymers.
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Wang M, Ghosh SK, Stafford CM, Blevins AK, Huang S, Martinez J, Long R, Bowman CN, Killgore JP, Zou M, Ding Y. Snakeskin-Inspired Elastomers with Extremely Low Coefficient of Friction under Dry Conditions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:57450-57460. [PMID: 33306352 DOI: 10.1021/acsami.0c18316] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Soft elastomers are critical to a broad range of existing and emerging technologies. One major limitation of soft elastomers is the large friction of coefficient (COF) due to inherently large adhesion and internal loss. In applications where lubrication is not applicable, such as soft robotics, wearable electronics, and biomedical devices, elastomers with inherently low dry COF are required. Inspired by the low COF of snakeskins atop soft bodies, this study reports the development of elastomers with low dry COF by growing a hybrid skin layer with a strong interface with a large stiffness gradient. Using a solid-liquid interfacial polymerization (SLIP) process, hybrid skin layers are imparted onto elastomers, which reduces the COF of the elastomers from 1.6 to 0.1, without sacrificing the bulk compliance and ductility of elastomer. Compared with existing surface modification methods, the SLIP process offers spatial control and ability to modify flat, prepatterned, curved, and inner surfaces, which is essential to engineer multifunctional skin layers for emerging applications.
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Affiliation(s)
- Mengyuan Wang
- Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80303, United States
- Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Sujan K Ghosh
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Christopher M Stafford
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Adrienne K Blevins
- Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80303, United States
- Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Sijia Huang
- Department of Chemical and Biochemical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Jaylene Martinez
- Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Rong Long
- Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Christopher N Bowman
- Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80303, United States
- Department of Chemical and Biochemical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Jason P Killgore
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, Colorado 80305, United States
| | - Min Zou
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Yifu Ding
- Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80303, United States
- Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
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