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Yamazaki K, Tsuji A, Takizawa M, Murata J. Ultrafast Solid-State Electrochemical Imprinting Utilizing Polymer Electrolyte Membrane Stamps for Static/Dynamic Structural Coloration and Letter Encryption. SMALL METHODS 2024:e2301787. [PMID: 38426651 DOI: 10.1002/smtd.202301787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 02/13/2024] [Indexed: 03/02/2024]
Abstract
Micro and nanopatterned surfaces hold potential for various applications, such as wettability control, antibiofouling, and optical components. However, conventional patterning processes are characterized by complexity, high costs, and environmental burdens because of the use of resists. Therefore, this paper proposes facile and ultrafast electrochemical imprinting employing a polymer electrolyte membrane (PEM) stamp for achieving micro and nanoscale patterning on Si surfaces. The solid-state electrochemical process efficiently generates oxide and hydrated oxide (Si-OH) patterns within several seconds at room temperature in a dry ambient environment. The formed oxide pattern can be employed as an etching mask to prepare diffraction gratings with diverse high-resolution (≈100 nm) patterns utilizing the dry PEM stamp. The resulting oxide pattern on the Si surface exhibits instantaneous structural coloration upon exposure to humid air, attributable to the formation of a water microdroplet array on the oxide pattern. The oxide pattern is successfully applied for dynamic diffraction grating and letter encryption. The proposed solid-state electrochemical oxidation scheme based on a PEM stamp, which eliminates the need for liquid electrolyte and resist, represents a simple and ultrafast process with a time cost of a few seconds, characterized by low processing costs and environmental impact.
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Affiliation(s)
- Katsuma Yamazaki
- Department of Mechanical Engineering, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Atsuki Tsuji
- Department of Mechanical Engineering, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Masaru Takizawa
- Department of Physical Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Junji Murata
- Department of Mechanical Engineering, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
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2
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Yin Y, Zhao L, Lin S. CO 2-philicity to CO 2-phobicity Transition on Smooth and Stochastic Rough Cu-like Substrate Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38039439 DOI: 10.1021/acs.langmuir.3c02434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2023]
Abstract
CO2 on metal substrates is essential to CO2 liquefaction and transportation of CO2, yet the manipulation of the wettability of the CO2 and the elucidation of its underlying mechanism have not been fully achieved. Here, using molecular dynamics simulations, we report CO2 wetting characteristics on both smooth and stochastic rough Cu-like substrate surfaces. The results indicate that the apparent contact angle (CA) of the CO2 droplet on the smooth surface decreases from 180° to 0° as the CO2-solid characteristic interaction energy increases from 0.002 to 0.016 eV. In addition, the CAs become greater with increasing the density of surface asperities, regardless of the intrinsic surface wettability. This is attributed to the capillary drying-out of liquid CO2 molecules in gaps between surface asperities at the three-phase contact line of the droplet, which is usually overlooked in previous theoretical studies. Notably, the intrinsically CO2-philic surface transforms to the CO2-phobic due to an increase in the density of surface rugosity. Moreover, we verify the range of applicability of the CA prediction models concerning the nanoscale asperities. This work is beneficial for fully understanding the influence of nanoscale surface topography on CO2 wettability and shedding light on the design of functionalized and patterned surfaces to manipulate CO2 wettability.
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Affiliation(s)
- Yuming Yin
- National Engineering Research Center of Turbo-Generator Vibration, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
| | - Lingling Zhao
- National Engineering Research Center of Turbo-Generator Vibration, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China
| | - Shangchao Lin
- Institute of Engineering Thermophysics, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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3
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Gao C, Zhang L, Hou Y, Zheng Y. A UV-Resistant Heterogeneous Wettability-Patterned Surface. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304080. [PMID: 37442804 DOI: 10.1002/adma.202304080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/15/2023]
Abstract
Preparing UV-resistant heterogeneous wettability patterns is critical for the practical application of surfaces with heterogeneous wettability. However, combining UV-resistant superhydrophobic and superhydrophilic materials on heterogeneous surfaces is challenging. Inspired by the structure of cell membranes, a UV-resistant heterogeneous wettability-patterned surface (UPS) is designed via laser ablation of the coating of multilayer structures. UV-resistant superhydrophobic silica patterns can be created in situ on surfaces covered with superhydrophilic TiO2 nanoparticles. The UV resistance time of the UPS with a TiO2 -based surface is more than two orders of magnitude higher than that obtained with other surface molecular modification methods that require a mask. The cell-membrane-like structure of the UPS regulates the migration of internal siloxane chain segments in the hydrophilic and hydrophobic regions of the surface. The UPS enables efficient patterning of functional materials under UV irradiation, controlling the wetting behavior of liquids in open-air systems. Furthermore, its heterogeneous wettability remains stable even after 50 h of intense UV irradiation (365 nm, 500 mW cm-2 ). These UV-resistant heterogeneous wettability patterned surfaces will likely be applied in microfluidics, cell culture, energy conversion, and water collection in the future.
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Affiliation(s)
- Chunlei Gao
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P.R. China
| | - Lei Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
| | - Yongping Hou
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
| | - Yongmei Zheng
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
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4
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Dallinger A, Steinwender F, Gritzner M, Greco F. Different Roles of Surface Chemistry and Roughness of Laser-Induced Graphene: Implications for Tunable Wettability. ACS APPLIED NANO MATERIALS 2023; 6:16201-16211. [PMID: 37772265 PMCID: PMC10526650 DOI: 10.1021/acsanm.3c02066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/29/2023] [Indexed: 09/30/2023]
Abstract
The control of surface wettability is a technological key aspect and usually poses considerable challenges connected to high cost, nanostructure, and durability, especially when aiming at surface patterning with high and extreme wettability contrast. This work shows a simple and scalable approach by using laser-induced graphene (LIG) and a locally inert atmosphere to continuously tune the wettability of a polyimide/LIG surface from hydrophilic to superhydrophobic (Φ ∼ 160°). This is related to the reduced amount of oxygen on the LIG surface, influenced by the local atmosphere. Furthermore, the influence of the roughness pattern of LIG on the wettability is investigated. Both approaches are combined, and the influence of surface chemistry and roughness is discussed. Measurements of the roll-off angle show that LIG scribed in an inert atmosphere with a low roughness has the highest droplet mobility with a roll-off angle of ΦRO = (1.7 ± 0.3)°. The superhydrophobic properties of the samples were maintained for over a year and showed no degradation after multiple uses. Applications of surfaces with extreme wettability contrast in millifluidics and fog basking are demonstrated. Overall, the proposed processing allows for the continuous tuning and patterning of the surface properties of LIG in a very accessible fashion useful for "lab-on-chip" applications.
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Affiliation(s)
- Alexander Dallinger
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, 8010 Graz, Austria
| | - Felix Steinwender
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, 8010 Graz, Austria
| | - Matthias Gritzner
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, 8010 Graz, Austria
| | - Francesco Greco
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, 8010 Graz, Austria
- The
Biorobotics Institute, Scuola Superiore
Sant’Anna, Viale
R. Piaggio 34, 56025 Pontedera, Italy
- Department
of Excellence in Robotics & AI, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
- Interdisciplinary
Center on Sustainability and Climate, Scuola
Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
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5
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Yan D, Lu Y, Liu J, Chen Y, Sun J, Song J. Enhanced water transportation on a superhydrophilic serial cycloid-shaped pattern. NANOSCALE 2023. [PMID: 37387274 DOI: 10.1039/d3nr02180g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Spontaneous and directional water transportation (SDWT) is considered as an ideal water transportation method and has a great prospect in the aerospace and ship fields. Nonetheless, the existing SDWT has the limitation of a slow water transportation velocity because of its geometry structure configuration, which hinders the practical application of the SDWT. To overcome this limitation, we developed a new superhydrophilic serial cycloid-shaped pattern (SSCP) which was inspired by the micro-cavity shape of the Nepenthes. First, we experimentally found that the water transportation velocity on the SSCP was faster than that on the superhydrophilic serial wedge-shaped pattern (SSWP) and analyzed the faster water transportation mechanism. Then, the influence of the SSCP parameters on the transportation velocity was investigated by a single-factor experiment. In addition, the water transportation velocity on the SSCP was enhanced to 289 mm s-1 by combining the single-factor experiment, orthogonal optimization design, streamline junction transition optimization, and pre-wet pattern, which was the fastest in the SDWT. Moreover, the SSCP demonstrated its superior capability in long-distance water transportation, gravity resistant water transportation, heat transfer, and fog collection. This finding shows remarkable application prospects in the high-performance fluid transportation system.
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Affiliation(s)
- Defeng Yan
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Yi Lu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Jinming Liu
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Yang Chen
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Jing Sun
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Jinlong Song
- State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, Liaoning, 116024, China.
- Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian, Liaoning 116024, P. R. China
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6
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Dhar M, Kara UI, Das S, Xu Y, Mandal S, Dupont RL, Boerner EC, Chen B, Yao Y, Wang X, Manna U. Design of a self-cleanable multilevel anticounterfeiting interface through covalent chemical modulation. MATERIALS HORIZONS 2023; 10:2204-2214. [PMID: 37000456 DOI: 10.1039/d3mh00180f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Counterfeit products have posed a significant threat to consumers safety and the global economy. To address this issue, extensive studies have been exploring the use of coatings with unclonable, microscale features for authentication purposes. However, the ease of readout, and the stability of these features against water, deposited dust, and wear, which are required for practical use, remain challenging. Here we report a novel class of chemically functionalizable coatings with a combination of a physically unclonable porous topography and distinct physiochemical properties (e.g., fluorescence, water wettability, and water adhesion) obtained through orthogonal chemical modifications (i.e., 1,4-conjugate addition reaction and Schiff-base reaction at ambient conditions). Unprecedentedly, a self-cleanable and physically unclonable coating is introduced to develop a multilevel anticounterfeiting interface. We demonstrate that the authentication of the fluorescent porous topography can be verified using deep learning. More importantly, the spatially selective chemical modifications can be read with the naked eye via underwater exposure and UV light illumination. Overall, the results reported in this work provide a facile basis for designing functional surfaces capable of independent and multilevel decryption of authenticity.
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Affiliation(s)
- Manideepa Dhar
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Ufuoma I Kara
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Supriya Das
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Yang Xu
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Sohini Mandal
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
| | - Robert L Dupont
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Eric C Boerner
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Boyuan Chen
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Yuxing Yao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Xiaoguang Wang
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
- Sustainability Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Uttam Manna
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Kamrup, Assam 781039, India
- Centre for Nanotechnology, School of Health Science and Technology, Indian Institute of Technology Guwahati, Kamrup, Assam 781039, India
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7
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Lin Z, Xiao K, Li L, Zhang Y, Zhang X, Chen D, Xue L. The Influence of Temperature on Anisotropic Wettability Revealed by Friction Force Measurement. Biomimetics (Basel) 2023; 8:biomimetics8020180. [PMID: 37218766 DOI: 10.3390/biomimetics8020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/21/2023] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Anisotropic surfaces with special wettability under various temperatures are of both fundamental interest and practical importance in many fields. However, little attention has been paid to the surfaces at temperatures between room temperature and the boiling point of water, which is partially due to the lack of a suitable characterization technique. Here, using the MPCP (monitoring of the position of the capillary's projection) technique, the influence of the temperature on the friction of a water droplet on the graphene-PDMS (GP) micropillar array (GP-MA) is investigated. The friction forces in the orthogonal directions and the anisotropy in the friction decrease when the GP-MA surface is heated up, based on the photothermal effect of graphene. The friction forces also decrease along the pre-stretching direction but increase in the orthogonal direction when the stretching is increased. The change in the contact area, the Marangoni flow inside a droplet, and the mass reduction are responsible for the temperature dependence. The findings strengthen our fundamental understanding of the dynamics of drop friction at high temperatures and could pave the way for the design of new functional surfaces with special wettabilities.
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Affiliation(s)
- Zhen Lin
- School of Power and Mechanical Engineering, Wuhan University, South Donghu Road 8, Wuhan 430072, China
| | - Kangjian Xiao
- School of Power and Mechanical Engineering, Wuhan University, South Donghu Road 8, Wuhan 430072, China
| | - Lijun Li
- School of Power and Mechanical Engineering, Wuhan University, South Donghu Road 8, Wuhan 430072, China
| | - Yurong Zhang
- The Institute of Technological Science, Wuhan University, South Donghu Road 8, Wuhan 430072, China
| | - Xiaolong Zhang
- School of Power and Mechanical Engineering, Wuhan University, South Donghu Road 8, Wuhan 430072, China
| | - Daobing Chen
- The Institute of Technological Science, Wuhan University, South Donghu Road 8, Wuhan 430072, China
| | - Longjian Xue
- School of Power and Mechanical Engineering, Wuhan University, South Donghu Road 8, Wuhan 430072, China
- The Institute of Technological Science, Wuhan University, South Donghu Road 8, Wuhan 430072, China
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8
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Xie D, Sun Y, Wu Y, Wang K, Wang G, Zang F, Ding G. Engineered Switchable-Wettability Surfaces for Multi-Path Directional Transportation of Droplets and Subaqueous Bubbles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208645. [PMID: 36423901 DOI: 10.1002/adma.202208645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/07/2022] [Indexed: 06/16/2023]
Abstract
Conventional engineered surfaces for fluid manipulation are hindered by the set wettability, and thus they can only achieve spontaneous transport of single-phase fluid, namely liquid or gas. Moreover, fluid transport systems that are robust to path defects have yet to be fully explored. Here, unprecedentedly, a universal wettability switching strategy is developed for achieving programmable directional transport of both droplets and subaqueous bubbles on a dumbbell-patterned functional surface (DPFS), featuring in strong robustness, high efficiency, and effective cost. By tuning the superwettability of DPFS through octadecyltrichlorosilane treatment and ultraviolet-C selective irradiation, the transport fluid can alternate between liquid and gas. The material's switchable superwettability regulates the fluid directed dynamics within the confined pattern, in which the sustaining fluid propelling relies on the surface energy difference between the starting and terminal sites. This enables the construction of multiple channels, which works synergistically with ultralow-volume-loss transport to impart the fluidic system with strong robustness against path defects. Underlying the completion of complex microfluidics tasks, spatially-selective cooling devices and subaqueous gas microreactors are successfully demonstrated. This energy-consumption-free fluid transport system opens a new avenue for on-chip programmable fluid manipulation, promoting innovative applications requiring rational control of two-phase fluid transport.
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Affiliation(s)
- Dongdong Xie
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yunna Sun
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yongjin Wu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kai Wang
- School of Internet of Things, Nanjing University of Posts and Telecommunications, No.9, Wenyuan Road, Nanjing, 210023, China
| | - Guilian Wang
- School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
| | - Faheng Zang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guifu Ding
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, China
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9
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Wang B, Wang Y, Du S, Zhu J, Ma S. Upcycling of thermosetting polymers into high-value materials. MATERIALS HORIZONS 2023; 10:41-51. [PMID: 36342017 DOI: 10.1039/d2mh01128j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Thermosetting polymers, a large class of polymers featuring excellent properties, have been widely used and play an irreplaceable role in our life. Nevertheless, they are arduous to be recycled or reused on account of their permanently cross-linked networks, and the main recycling approaches used currently include energy recovery through incineration, utilization as fillers after mechanical grinding, and pyrolysis, which only reclaim a small fraction or partial value of thermosetting polymers and their downstream materials. In this minireview, we provide an overview of the efforts undertaken towards upcycling thermosetting polymers in recent years. The research progress on physical upcycling, carbonization, solvolysis and vitrimerization of thermoset waste to high-value materials, including oil-water separation materials, 3D printable materials, functional carbon materials (supercapacitors, photothermal conversion materials, and catalytic materials), additives, emulsifiers, biolubricants, and vitrimers, are summarized and discussed. Perspectives on the future development of the art of upcycling thermosets are also provided.
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Affiliation(s)
- Binbo Wang
- Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yi Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.
| | - Shuai Du
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.
| | - Jin Zhu
- Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Songqi Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.
- Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
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