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Worajittiphon P, Majan P, Wangkawong K, Somsunan R, Jantrawut P, Panraksa P, Chaiwarit T, Srithep Y, Sommano SR, Jantanasakulwong K, Rachtanapun P. Inside-out templating: A strategy to decorate helical carbon nanotubes and 2D MoS 2 on ethyl cellulose sponge for enhanced oil adsorption and oil/water separation. Int J Biol Macromol 2024; 273:133119. [PMID: 38880452 DOI: 10.1016/j.ijbiomac.2024.133119] [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: 03/17/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
Ethyl cellulose (EC)-based composite sponges were developed for oil spillage treatment. The EC sponge surface was decorated with helical carbon nanotubes (HCNTs) and molybdenum disulfide (MoS2) (1 phr) using the inside-out sugar templating method. The inside surface of a sugar cube was coated with HCNTs and MoS2. After filling the sugar cube pores with EC and the subsequent sugar leaching, the decorating materials presented on the sponge surface. The EC/HCNT/MoS2 sponge had a high level of oil removal based on its adsorption capacity (41.68 g/g), cycled adsorption (∼75-79 %), separation flux efficiency (∼85-95 %), and efficiency in oil/water emulsion separation (92-94 %). The sponge maintained adsorption capacity in acidic, basic, and salty conditions, adsorbed oil under water, and functioned as an oil/water separator in a continuous pump-assisted system. The compressive stress and Young's modulus of the EC sponge increased following its decoration using HCNTs and MoS2. The composite sponge was robust based on cycled compression and was thermally stable up to ∼120 οC. Based on the eco-friendliness of EC, the low loading of HCNTs and MoS2, and sponge versatility, the developed EC/HCNT/MoS2 sponge should be good candidate for use in sustainable oil adsorption and separation applications.
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Affiliation(s)
- Patnarin Worajittiphon
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Panudda Majan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kanlayawat Wangkawong
- Department of Basic Science and Physical Education, Faculty of Science at Sriracha, Kasetsart University Sriracha Campus, Chonburi 20230, Thailand
| | - Runglawan Somsunan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Pensak Jantrawut
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand
| | - Pattaraporn Panraksa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Tanpong Chaiwarit
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Yottha Srithep
- Manufacturing and Materials Research Unit, Department of Manufacturing Engineering, Faculty of Engineering, Mahasarakham University, Mahasarakham 44150, Thailand
| | - Sarana Rose Sommano
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand; Plant Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand; Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kittisak Jantanasakulwong
- Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand; Division of Packaging Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Pornchai Rachtanapun
- Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand; Division of Packaging Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
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Xu F, Zhang H, Liu H, Han W, Nie Z, Lu Y, Wang H, Zhu J. Ultrafast universal fabrication of configurable porous silicone-based elastomers by Joule heating chemistry. Proc Natl Acad Sci U S A 2024; 121:e2317440121. [PMID: 38437532 PMCID: PMC10945771 DOI: 10.1073/pnas.2317440121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 02/01/2024] [Indexed: 03/06/2024] Open
Abstract
Silicone-based elastomers (SEs) have been extensively applied in numerous cutting-edge areas, including flexible electronics, biomedicine, 5G smart devices, mechanics, optics, soft robotics, etc. However, traditional strategies for the synthesis of polymer elastomers, such as bulk polymerization, suspension polymerization, solution polymerization, and emulsion polymerization, are inevitably restricted by long-time usage, organic solvent additives, high energy consumption, and environmental pollution. Here, we propose a Joule heating chemistry method for ultrafast universal fabrication of SEs with configurable porous structures and tunable components (e.g., graphene, Ag, graphene oxide, TiO2, ZnO, Fe3O4, V2O5, MoS2, BN, g-C3N4, BaCO3, CuI, BaTiO3, polyvinylidene fluoride, cellulose, styrene-butadiene rubber, montmorillonite, and EuDySrAlSiOx) within seconds by only employing H2O as the solvent. The intrinsic dynamics of the in situ polymerization and porosity creation of these SEs have been widely investigated. Notably, a flexible capacitive sensor made from as-fabricated silicone-based elastomers exhibits a wide pressure range, fast responses, long-term durability, extreme operating temperatures, and outstanding applicability in various media, and a wireless human-machine interaction system used for rescue activities in extreme conditions is established, which paves the way for more polymer-based material synthesis and wider applications.
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Affiliation(s)
- Feng Xu
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
| | - Hongjian Zhang
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
- School of Flexible Electronics and Henan Institute of Flexible Electronics, Henan University, Zhengzhou450046, People’s Republic of China
| | - Haodong Liu
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
| | - Wenqi Han
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
| | - Zhentao Nie
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
| | - Yufei Lu
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
- School of Flexible Electronics and Henan Institute of Flexible Electronics, Henan University, Zhengzhou450046, People’s Republic of China
| | - Haoyang Wang
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics, Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an710072, People’s Republic of China
| | - Jixin Zhu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei230027, People’s Republic of China
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Lei C, Chen P, Zhang Z, Hua F, Hou X, Qu J, Zhao Y, Hu Q. Cellulose cryogels from herbal residues for oily wastewater purification. Int J Biol Macromol 2023; 252:126417. [PMID: 37604424 DOI: 10.1016/j.ijbiomac.2023.126417] [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: 07/08/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023]
Abstract
Recycling herbal residues for oily wastewater purification is a potential way to use the wastes to treat wastes. Cellulose extracted from herbal residues is a fine material for cryogel fabrication. However, the cellulose cryogels were not suitable for oily wastewater treatment due to their amphiphilicity. To address this issue, the cryogels were modified with methyltrimethoxysilane (MTMS), which made them hydrophobic and reduced their surface energy. In this study, the herbal residues (Ficus microcarpa L. f) were used in cryogel preparation for the first time. The cryogels exhibit super lightweight and low density. The modified cryogels show excellent sorption capacity for free oils, especially silicone oil (51.22 g/g), and outperformed some recent sorbents. They also effectively separated water-in-toluene emulsion stabilized by Span 80, with a separation efficiency of 98.57 % and a flux of 1474.67 L/m2h. This study demonstrated a novel application of waste herbal residues in the field of environmental remediation.
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Affiliation(s)
- Changyang Lei
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Peiying Chen
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Zonghui Zhang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Fangcong Hua
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Xiaohong Hou
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Jianhua Qu
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Yudan Zhao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, PR China.
| | - Qi Hu
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110006, PR China.
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Bagdasarian IA, Tonmoy TI, Park BH, Morgan JT. In vitro formation and extended culture of highly metabolically active and contractile tissues. PLoS One 2023; 18:e0293609. [PMID: 37910543 PMCID: PMC10619834 DOI: 10.1371/journal.pone.0293609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
3D cell culture models have gained popularity in recent years as an alternative to animal and 2D cell culture models for pharmaceutical testing and disease modeling. Polydimethylsiloxane (PDMS) is a cost-effective and accessible molding material for 3D cultures; however, routine PDMS molding may not be appropriate for extended culture of contractile and metabolically active tissues. Failures can include loss of culture adhesion to the PDMS mold and limited culture surfaces for nutrient and waste diffusion. In this study, we evaluated PDMS molding materials and surface treatments for highly contractile and metabolically active 3D cell cultures. PDMS functionalized with polydopamine allowed for extended culture duration (14.8 ± 3.97 days) when compared to polyethylamine/glutaraldehyde functionalization (6.94 ± 2.74 days); Additionally, porous PDMS extended culture duration (16.7 ± 3.51 days) compared to smooth PDMS (6.33 ± 2.05 days) after treatment with TGF-β2 to increase culture contraction. Porous PDMS additionally allowed for large (13 mm tall × 8 mm diameter) constructs to be fed by diffusion through the mold, resulting in increased cell density (0.0210 ± 0.0049 mean nuclear fraction) compared to controls (0.0045 ± 0.0016 mean nuclear fraction). As a practical demonstration of the flexibility of porous PDMS, we engineered a vascular bioartificial muscle model (VBAM) and demonstrated extended culture of VBAMs anchored with porous PDMS posts. Using this model, we assessed the effect of feeding frequency on VBAM cellularity. Feeding 3×/week significantly increased nuclear fraction at multiple tissue depths relative to 2×/day. VBAM maturation was similarly improved in 3×/week feeding as measured by nuclear alignment (23.49° ± 3.644) and nuclear aspect ratio (2.274 ± 0.0643) relative to 2x/day (35.93° ± 2.942) and (1.371 ± 0.1127), respectively. The described techniques are designed to be simple and easy to implement with minimal training or expense, improving access to dense and/or metabolically active 3D cell culture models.
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Affiliation(s)
- Isabella A. Bagdasarian
- Department of Bioengineering, University of California, Riverside, CA, United States of America
| | - Thamidul Islam Tonmoy
- Department of Bioengineering, University of California, Riverside, CA, United States of America
| | - B. Hyle Park
- Department of Bioengineering, University of California, Riverside, CA, United States of America
| | - Joshua T. Morgan
- Department of Bioengineering, University of California, Riverside, CA, United States of America
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Mei J, Ding Z, Sun X, Mo S, Zheng X, Li Z. A solvent-template ethyl cellulose-polydimethylsiloxane crosslinking sponge for rapid and efficient oil adsorption. Int J Biol Macromol 2023:125399. [PMID: 37331535 DOI: 10.1016/j.ijbiomac.2023.125399] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/04/2023] [Accepted: 06/13/2023] [Indexed: 06/20/2023]
Abstract
Lipophilic adsorbents for oil-water separation are usually synthesized using the template method, in which hydrophobic materials are coated on a ready-made sponge. Herein, a novel solvent-template technique is used to directly synthesize a hydrophobic sponge, by crosslinking polydimethylsiloxane (PDMS) with ethyl cellulose (EC) which plays a vital role in the formation of 3D porous structure. The as-prepared sponge has advantages of strong hydrophobility, high elasticity, as well as excellent adsorption performance. In addition, the sponge can be readily decorated by nano-coatings. After the sponge was simply dipped in nanosilica, the water contact angle increases from 139.2° to 144.5°, and the maximum adsorption capacity for chiroform rises from 25.6 g/g to 35.4 g/g. The adsorption equilibrium can be reached within 3 min, and, the sponge can be regenerated by squeezing, without any change in hydrophobility or evident decline in capacity. The simulation tests of emulsion separation and oil-spill cleanup demonstrate that the sponge has great potential in oil-water separation.
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Affiliation(s)
- Jinfeng Mei
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China.
| | - Zilong Ding
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Xiaoyun Sun
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Siqi Mo
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Xudong Zheng
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China
| | - Zhongyu Li
- School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, PR China; School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China.
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McKenzie T, Ayres N. Synthesis and Applications of Elastomeric Polymerized High Internal Phase Emulsions (PolyHIPEs). ACS OMEGA 2023; 8:20178-20195. [PMID: 37323392 PMCID: PMC10268022 DOI: 10.1021/acsomega.3c01265] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023]
Abstract
Polymer foams (PFs) are among the most industrially produced polymeric materials, and they are found in applications including aerospace, packaging, textiles, and biomaterials. PFs are predominantly prepared using gas-blowing techniques, but PFs can also be prepared from templating techniques such as polymerized high internal phase emulsions (polyHIPEs). PolyHIPEs have many experimental design variables which control the physical, mechanical, and chemical properties of the resulting PFs. Both rigid and elastic polyHIPEs can be prepared, but while elastomeric polyHIPEs are less commonly reported than hard polyHIPEs, elastomeric polyHIPEs are instrumental in the realization of new materials in applications including flexible separation membranes, energy storage in soft robotics, and 3D-printed soft tissue engineering scaffolds. Furthermore, there are few limitations to the types of polymers and polymerization methods that have been used to prepare elastic polyHIPEs due to the wide range of polymerization conditions that are compatible with the polyHIPE method. In this review, an overview of the chemistry used to prepare elastic polyHIPEs from early reports to modern polymerization methods is provided, focusing on the applications that flexible polyHIPEs are used in. The review consists of four sections organized around polymer classes used in the preparation of polyHIPEs: (meth)acrylics and (meth)acrylamides, silicones, polyesters and polyurethanes, and naturally occurring polymers. Within each section, the common properties, current challenges, and an outlook is suggested on where elastomeric polyHIPEs can be expected to continue to make broad, positive impacts on materials and technology for the future.
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Affiliation(s)
| | - Neil Ayres
- N.A.:
email, ; tel, +01 513 556 9280; fax, +01 513 556 9239
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Wu J, Tian J, Qian Z, Huang J, Sun D. Highly robust separation for aqueous oils enabled by balsa wood-based cellulose aerogel with intrinsic superior hydrophilicity. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Wei S, Xu Z, Liu Y, Liang Y, Wang G. Bioinspired spindle-knotted structure fiber membrane prepared by modified coaxial electrospinning for water-in-oil emulsion separation. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1254-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Uricchio A, Lasalandra T, Tamborra ERG, Caputo G, Mota RP, Fanelli F. Atmospheric Pressure Plasma-Treated Polyurethane Foam as Reusable Absorbent for Removal of Oils and Organic Solvents from Water. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7948. [PMID: 36431434 PMCID: PMC9693071 DOI: 10.3390/ma15227948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/04/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
This paper reports the optimization of a two-step atmospheric pressure plasma process to modify the surface properties of a polyurethane (PU) foam and, specifically, to prepare a superhydrophobic/superoleophilic absorbent for the removal of oils and nonpolar organic solvents from water. In particular, in the first step, an oxygen-containing dielectric barrier discharge (DBD) is used to induce the etching/nanotexturing of the foam surfaces; in the second step, an ethylene-containing DBD enables uniform overcoating with a low-surface-energy hydrocarbon polymer film. The combination of surface nanostructuring and low surface energy ultimately leads to simultaneous superhydrophobic and superoleophilic wetting properties. X-ray photoelectron spectroscopy, scanning electron microscopy and water contact angle measurements are used for the characterization of the samples. The plasma-treated PU foam selectively absorbs various kinds of hydrocarbon-based liquids (i.e., hydrocarbon solvents, mineral oils, motor oil, diesel and gasoline) up to 23 times its own weight, while it completely repels water. These absorption performances are maintained even after 50 absorption/desorption cycles and after immersion in hot water as well as acidic, basic and salt aqueous solutions. The plasma-treated foam can remove mineral oil while floating on the surface of mineral oil/water mixtures with a separation efficiency greater than 99%, which remains unaltered after 20 separation cycles.
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Affiliation(s)
- Antonella Uricchio
- Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
| | - Teresa Lasalandra
- Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
| | - Eliana R. G. Tamborra
- Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
| | - Gianvito Caputo
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Rogério P. Mota
- Department of Physics, Faculty of Engineering and Science, São Paulo State University (UNESP), 12516-410 Guaratinguetá, SP, Brazil
| | - Fiorenza Fanelli
- Institute of Nanotechnology (NANOTEC), National Research Council (CNR), c/o Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
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Herren B, Saha MC, Altan MC, Liu Y. Funnel-Shaped Floating Vessel Oil Skimmer with Joule Heating Sorption Functionality. Polymers (Basel) 2022; 14:polym14112269. [PMID: 35683941 PMCID: PMC9182707 DOI: 10.3390/polym14112269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/27/2022] [Accepted: 05/29/2022] [Indexed: 02/04/2023] Open
Abstract
Floating vessel-type oil collecting devices based on sorbent materials present potential solutions to oil spill cleanup that require a massive amount of sorbent material and manual labor. Additionally, continuous oil extraction from these devices presents opportunities for highly energy-efficient oil skimmers that use gravity as the oil/water separation mechanism. Herein, a sorbent-based oil skimmer (SOS) is developed with a novel funnel-shaped sorbent and vessel design for efficient and continuous extraction of various oils from the water surface. A carbon black (CB) embedded polydimethylsiloxane (PDMS) sponge material is characterized and used as the sorbent in the SOS. The nanocomposite sponge formulation is optimized for high reusability, hydrophobicity, and rapid oil absorption. Joule heating functionality of the sponge is also explored to rapidly absorb highly viscous oils that are a significant challenge for oil spill cleanup. The optimized sponge material with the highest porosity and 15 wt% CB loading is tested in the SOS for large-scale oil spill extraction tests and shows effective cleaning of oil spilled on the water surface. The SOS demonstrates a high maximum extraction rate of 200 mL/min for gasoline and maintains a high extraction rate performance upon reuse when the sponge funnel is cleaned and dried.
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Zeng C, Shen Y, Tao J, Chen H, Wang Z, Liu S, Lu D, Xie X. Rationally Regulating the Mechanical Performance of Porous PDMS Coatings for the Enhanced Icephobicity toward Large-Scale Ice. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:937-944. [PMID: 34894687 DOI: 10.1021/acs.langmuir.1c02205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ice accumulation on various surfaces in low-temperature and high-humidity environments is still a major challenge for several engineering applications. Herein, we fabricated a kind of PDMS coating with the introduction of porous structures under the surface by a two-step curing and phase separation method. The coatings with no further surface modification showed good hydrophobicity and icephobicity, and the typical ice adhesion strength was down to 40 kPa with a water contact angle of 116.5°. More than that, the porous PDMS coatings showed extraordinary icephobicity, especially toward large-scale ice (>10 cm2). In this case, the large-scale ice layer can be rapidly removed under a small external deicing force in a form of interface crack propagation rather than whole direct fracture. It was confirmed that by regulating the pore size and porosity of PDMS coatings properly, the stiffness mismatch between coatings and ice can be controlled to induce the initiation of interfacial cracks. On this basis, under the condition of a large-scale icing area, a small external deicing force can cause an increased surface stress concentration, and the formed interface cracks can propagate quickly, resulting in the ice layer falling off easily. In addition, under the influence of the size effect, ice can be removed without an additional force, and the minimum external force (per unit width) can be only 60 N/cm. This paper proposes that prefabricating a large number of microcracks at the interface can significantly weaken the bonding between ice and coatings, that is, reduce the fracture toughness. The new coatings have a remarkable effect toward large-scale icing.
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Affiliation(s)
- Chaojiao Zeng
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Yizhou Shen
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Jie Tao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Haifeng Chen
- Department of Materials Chemistry, Qiuzhen School, Huzhou University, 759# East 2nd Road, Huzhou 313000, P. R. China
| | - Zhe Wang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Senyun Liu
- Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Mianyang 621000, P. R. China
| | - Daipeng Lu
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, China
| | - Xinyu Xie
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
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Panickar R, Sobhan CB, Chakravorti S. Highly Efficient Amorphous Carbon Sphere-Based Superhydrophobic and Superoleophilic Sponges for Oil/Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12501-12511. [PMID: 34637316 DOI: 10.1021/acs.langmuir.1c02307] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this experimental study, a commercially available polyurethane (PU) sponge coated with amorphous carbon spheres (ACSs) is investigated for oil/water separation. The ACSs synthesized using chemical vapor deposition are embedded in the PU sponge by a simple dip-coating method. The superhydrophobic ACS-PU sponge exhibits a water contact angle (WCA) of 156.2 ± 1° and a sliding angle <5°. The prepared sponge exhibits high absorption capacity, removal of oil spills from water, and demulsification of an oil-in-water emulsion. Absorption capacities of 32-68 times the ACS-PU sponge weight were obtained for different organic solvents and oils. It was found that the prepared ACS-PU sponge can effectively absorb oils under both static and turbulent conditions. Compared with the reported studies on the loading of different carbon materials in sponges for oil/water separation, ACSs in PU have a low loading percentage of ∼7 wt % and better absorption recyclability. The method proposes a simple and cost-effective preparation technique of highly hydrophobic and oleophilic ACS-PU sponges for effective oil/water separation.
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Affiliation(s)
- Radhika Panickar
- School of Materials Science and Engineering, National Institute of Technology Calicut, NITC Campus, Calicut 673601, India
| | - Choondal B Sobhan
- School of Materials Science and Engineering, National Institute of Technology Calicut, NITC Campus, Calicut 673601, India
| | - Sivaji Chakravorti
- Department of Electrical Engineering, National Institute of Technology Calicut, NITC Campus, Calicut 673601, India
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Mo S, Mei J, Liang Q, Li Z. Repeatable oil-water separation with a highly-elastic and tough amino-terminated polydimethylsiloxane-based sponge synthesized using a self-foaming method. CHEMOSPHERE 2021; 271:129827. [PMID: 33736215 DOI: 10.1016/j.chemosphere.2021.129827] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/22/2021] [Accepted: 01/29/2021] [Indexed: 06/12/2023]
Abstract
A 3D porous sponge based on amino-terminated polydimethylsiloxane (PDMS) and graphene oxide (GO) was prepared using a simple one-pot method under mild conditions. Condensing agents combined GO and PDMS with covalent bonds, and simultaneously acted as the pore-foaming agents. Scanning electron microscopy and Mercury intrusion porosimetry revealed that the joint action of GO and condensing agents contributes to the formation of the porous structure. Cyclic compression demonstrated high toughness and elasticity. No deformation occurs after 20 compression cycles at over 80% strain, owing to the assistance of dynamic hydrogen bonds. GO content significantly influences the mechanical strength, hydrophobicity, as well as adsorption capacity for oil. Notably, the sponge can be repeatedly used with a simple squeezing method, and the adsorption capacity can still reach 96.30% of the first adsorption after 30 cycles of adsorption. Besides, the sponge was used to adsorb oil on the seawater surface experimentally. The stable structure, high mechanical strength, and excellent adsorption property suggest the sponge be a promising material for the treatment of oil leakage and oily wastewater purification in practice. This self-foaming method can be a common method for fabricating porous and stable porous materials.
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Affiliation(s)
- Siqi Mo
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China
| | - Jinfeng Mei
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China.
| | - Qian Liang
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, PR China
| | - Zhongyu Li
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, PR China; School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, PR China.
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14
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Pan Z, Guan Y, Liu Y, Cheng F. Facile fabrication of hydrophobic and underwater superoleophilic elastic and mechanical robust graphene/PDMS sponge for oil/water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118273] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Wang CJ, Kuan WF, Lin HP, Shchipunov YA, Chen LJ. Facile hydrophilic modification of polydimethylsiloxane-based sponges for efficient oil–water separation. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.01.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Cao M, Li SL, Cheng JB, Zhang AN, Wang YZ, Zhao HB. Fully bio-based, low fire-hazard and superelastic aerogel without hazardous cross-linkers for excellent thermal insulation and oil clean-up absorption. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123977. [PMID: 33265017 DOI: 10.1016/j.jhazmat.2020.123977] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/24/2020] [Accepted: 09/11/2020] [Indexed: 06/12/2023]
Abstract
Elastic biomass aerogels have attracted widespread attention but are seriously hindered by environmentally unfriendly cross-linkers and fire hazards for functional applications. This study outlines the fabrication of a fully bio-based, low fire-hazard and superelastic aerogel without any cross-linkers for excellent thermal insulation and oil absorption, via creating highly oriented wave-shaped layer microstructures and subsequently depositing nonflammable siloxane coating on the surface of the aerogel skeleton. The resultant environmental-safety aerogel showed the combined advantages of anisotropic super-elasticity, hydrophobicity, low density and high flame retardancy (limiting oxygen index value of 42%, UL-94 V-0 rating, and extremely low heat release), thus leading to many benefits for solving environmental hazards. For instance, this fire-safety biomass aerogel can be used as the high-performance thermal insulator with low thermal conductivity and high shielding efficiency. The aerogel also exhibited a great selectively oil clean-up absorption with a high absorption capacity of 117 times its own weight and excellent recyclability. Especially, due to the highly oriented microstructures, the aerogel as a filter showed the fastest separation rates of oil/water mixture (flux rate of 145.78 L h-1 g-1) ever reported. Such a method of preparing super-elastic biomass aerogels will provide new insights into their multifunctional applications with high environmental safety.
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Affiliation(s)
- Min Cao
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shu-Liang Li
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jin-Bo Cheng
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ai-Ning Zhang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hai-Bo Zhao
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China.
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17
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Zhai G, Qi L, He W, Dai J, Xu Y, Zheng Y, Huang J, Sun D. Durable super-hydrophobic PDMS@SiO 2@WS 2 sponge for efficient oil/water separation in complex marine environment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116118. [PMID: 33280919 DOI: 10.1016/j.envpol.2020.116118] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
The robust and eco-friendly super-hydrophobic sponge with remarkable performances has been potential adsorption material for the treatment of offshore oil spills. In this work, the durable PDMS@SiO2@WS2 sponge was fabricated via a green and facile one-step dipping method. The mixed tungsten disulfide (WS2) microparticles and hydrophobic SiO2 nanoparticles were immobilized on the sponge by non-toxic polydimethylsiloxane (PDMS) glue tier, which featured the hierarchical structure and extreme water repellency with the water contact angle of 158.8 ± 1.4°. The obtained PDMS@SiO2@WS2 sponge exhibits high oil adsorption capacity with 12-112 times of its own weight, and oil/water selectivity with separation efficiency over 99.85%. Notably, when subjected to the complex marine environment including high temperature, corrosive condition, insolation, and strong wind and waves, the modified sponge can maintain sable super-hydrophobicity with water contact angle over 150°. Moreover, it possesses superior mechanical stability for sustainable reusability and oil recovery. The sponge fabricated by non-toxic modifiers along with its sable super-hydrophobicity in complex marine environment makes it a potential material for practical applications.
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Affiliation(s)
- Guanzhong Zhai
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Lixue Qi
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Wang He
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jiajun Dai
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Yan Xu
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Yanmei Zheng
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jiale Huang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Daohua Sun
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China.
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18
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Kwak Y, Kang Y, Park W, Jo E, Kim J. Fabrication of fine-pored polydimethylsiloxane using an isopropyl alcohol and water mixture for adjustable mechanical, optical, and thermal properties. RSC Adv 2021; 11:18061-18067. [PMID: 35480166 PMCID: PMC9033208 DOI: 10.1039/d1ra02466c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/06/2021] [Indexed: 11/21/2022] Open
Abstract
A fabrication method for obtaining fine-pored PDMS is presented. Low-cost, volatile, and easily accessible IPA is used as a co-solvent in water and PDMS emulsions, allowing porous PDMS with adjustable mechanical, optical and thermal properties.
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Affiliation(s)
- Yeunjun Kwak
- School of Mechanical Engineering
- Yonsei University
- Seoul
- Republic of Korea
| | - Yunsung Kang
- School of Mechanical Engineering
- Yonsei University
- Seoul
- Republic of Korea
| | - Wonkeun Park
- School of Mechanical Engineering
- Yonsei University
- Seoul
- Republic of Korea
| | - Eunhwan Jo
- School of Mechanical Engineering
- Yonsei University
- Seoul
- Republic of Korea
| | - Jongbaeg Kim
- School of Mechanical Engineering
- Yonsei University
- Seoul
- Republic of Korea
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19
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Yin Z, Sun X, Bao M, Li Y. Construction of a hydrophobic magnetic aerogel based on chitosan for oil/water separation applications. Int J Biol Macromol 2020; 165:1869-1880. [PMID: 33086115 DOI: 10.1016/j.ijbiomac.2020.10.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/23/2020] [Accepted: 10/10/2020] [Indexed: 02/01/2023]
Abstract
Hydrophobic/oleophilic absorbents have been largely studied and used in recovering spilled oil. However, they still suffer from several drawbacks and two of them are poor biocompatibility and hard to thoroughly rinse. In order to address these problems, here a hydrophobic magnetic chitosan-based aerogel is fabricated via electrostatic interactions between chitosan (CS), itaconic acid (IA) and Fe3O4 nanoparticles and dip-coating in ethanol solution of Candelilla wax (CW). Due to the interconnected porous structure of chitosan-based aerogel, the magnetism of Fe3O4 nanoparticles and the hydrophobicity of CW, the prepared aerogel exhibits high absorption capacities (from 17.7 to 43.8 g/g) towards various types of organic liquids, excellent magnetic controllability with saturation magnetization of 15.93 emu/g and good water repellency with water contact angle (WCA) of 147.9°. In addition, the aerogel can also continuously separate immiscible oil/water mixtures and water-in-oil emulsions as the form of filter. More significantly, the absorbed organic liquids can be completely recovered by simply placing the aerogel in water solution of IA at 75 °C, which can avoid cleaning agent consumption. As a consequence, this renewable, biodegradable and eco-friendly oil scavenger presents a bright prospect in practical applications.
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Affiliation(s)
- Zichao Yin
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Xiaojun Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Yang Li
- China Petrochemical Corporation (Sinopec Group), Beijing 100728, China; Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
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20
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Zhao P, Wang J, Li Y, Wang X, Chen C, Liu G. Microfluidic Technology for the Production of Well-Ordered Porous Polymer Scaffolds. Polymers (Basel) 2020; 12:E1863. [PMID: 32825098 PMCID: PMC7564514 DOI: 10.3390/polym12091863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 01/01/2023] Open
Abstract
Advances in tissue engineering (TE) have revealed that porosity architectures, such as pore shape, pore size and pore interconnectivity are the key morphological properties of scaffolds. Well-ordered porous polymer scaffolds, which have uniform pore size, regular geometric shape, high porosity and good pore interconnectivity, facilitate the loading and distribution of active biomolecules, as well as cell adhesion, proliferation and migration. However, these are difficult to prepare by traditional methods and the existing well-ordered porous scaffold preparation methods require expensive experimental equipment or cumbersome preparation steps. Generally, droplet-based microfluidics, which generates and manipulates discrete droplets through immiscible multiphase flows inside microchannels, has emerged as a versatile tool for generation of well-ordered porous materials. This short review details this novel method and the latest developments in well-ordered porous scaffold preparation via microfluidic technology. The pore structure and properties of microfluidic scaffolds are discussed in depth, laying the foundation for further research and application in TE. Furthermore, we outline the bottlenecks and future developments in this particular field, and a brief outlook on the future development of microfluidic technique for scaffold fabrication is presented.
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Affiliation(s)
- Pei Zhao
- Energy Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (J.W.); (Y.L.); (C.C.); (G.L.)
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Jianchun Wang
- Energy Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (J.W.); (Y.L.); (C.C.); (G.L.)
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yan Li
- Energy Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (J.W.); (Y.L.); (C.C.); (G.L.)
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Xueying Wang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China;
| | - Chengmin Chen
- Energy Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (J.W.); (Y.L.); (C.C.); (G.L.)
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Guangxia Liu
- Energy Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (J.W.); (Y.L.); (C.C.); (G.L.)
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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