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Song K, Bi X, Yu C, Pan YT, Vahabi H, Realinho V, He J, Yang R. A Gas-Steamed Route to Mesoporous Open Metal-Organic Framework Cages Enhancing Flame Retardancy and Smoke Suppression of Polyurea. ACS APPLIED MATERIALS & INTERFACES 2024; 16:7617-7630. [PMID: 38315971 DOI: 10.1021/acsami.3c17625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Up to now, metal-organic frameworks (MOFs) with open nanostructures have shown outstanding capabilities in trapping smoke particles compared to the original MOFs. However, only a few MOF-based strategies have been reported to synthesize hierarchical porous cages thus far, which are mainly restricted to environmentally unfriendly wet-chemical liquid methods. Herein, as a proof-of-concept, a gas-steamed metal-organic framework approach was designed to fabricate a series of cheeselike open cages with hierarchical porosity. Briefly, zeolitic imidazolate framework-67 (ZIF-67) and phytic acid were employed as precursor and etchant, respectively. Abandoning the conventional wet-chemical method, the coordination bond of ZIF-67 was cleaved by acidic steam, forming an open framework with a high specific surface area and a hierarchical porous structure. The universality of this method was also confirmed by the selection of different etchants. Impressively, they also show outstanding fume-toxic adsorption capability and labyrinth effects based on abundant and complex porous channels. At only 5 wt % loading, Co3O4@open ZIF-67 cage-2 (Co3O4@OZC-2) imparted polyurea (PUA) composites with a 21.2% limiting oxygen index, and the peak of heat release rate, total heat release, and total smoke production were reduced by around 37.5, 25.5, and 40.4%, respectively, compared to neat PUA. This work will shed light on the advanced structural design of polymer composites with high fire safety, especially smoke suppression performance, so as to obtain more feasible applications.
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Affiliation(s)
- Kunpeng Song
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Xue Bi
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Chuang Yu
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Ye-Tang Pan
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Henri Vahabi
- CentraleSupélec, LMOPS, Université de Lorraine, F-57000 Metz, France
| | - Vera Realinho
- Poly2 Group, Department of Materials Science and Engineering, School of Industrial, Aerospace and Audiovisual Engineering of Terrassa, Universitat Politècnica de Catalunya (UPC BarcelonaTech), C/de Colom, 11, 08222 Terrassa, Spain
| | - Jiyu He
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Rongjie Yang
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
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Li N, Shi JF, Zhang F, Jia LC, Wang YY, Yan DX, Li ZM. Peelable Microwave Absorption Coating with Reusable and Anticorrosion Merits. ACS APPLIED MATERIALS & INTERFACES 2024; 16:6462-6473. [PMID: 38266189 DOI: 10.1021/acsami.3c17805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The peelable microwave absorption (MA) coating with reversible adhesion for stable presence on substrates and easy release without any residuals is highly desired in temporary electromagnetic protection, which can quickly enter and disengage the electromagnetic protection state according to the real-time changeable harsh surroundings. On the contrary, with the incorporation of abundant absorbent to achieve excellent MA ability, the tunable adhesion and sufficient cohesion are extremely challenging to fulfill the above requirement. The reported peelable coatings still have problems in controlling adhesion/cohesion strength and coating release, facing substantial residuals after peeling even using complex chemical modification or abundant additives. Herein, a peelable MA coating based on the block characteristics of polar and nonpolar segments of poly(styrene-(ethylene-co-butylene)-styrene) (SEBS) is successfully developed. The polyaniline-decorated carbon nanotube as a microwave absorber plays a positive influence on the adhesion/cohesion of the coating due to bonding interaction. The competitive effective absorption bandwidth (EAB) of 8.8 GHz and controllable yet reversible adhesion release on various substrates and complex surfaces have been achieved. The reusability endows peelable MA coating with 93% retention of EAB even after ten coating-peeling cycles. The coating with excellent chemical and adhesion stability can effectively protect substrates from salt/acid/alkali corrosion, showing over 98% retention of EAB even after 8 h of accelerated corrosion. Our peelable MA coating via a general yet reliable approach provides a prospect for temporary electromagnetic protection.
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Affiliation(s)
- Nan Li
- School of Aeronautics and Astronautics, Robotic Satellite Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Jun-Feng Shi
- School of Aeronautics and Astronautics, Robotic Satellite Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Feng Zhang
- School of Aeronautics and Astronautics, Robotic Satellite Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Li-Chuan Jia
- College of Electrical Engineering, Sichuan University, Chengdu 610065, China
| | - Yue-Yi Wang
- School of Aeronautics and Astronautics, Robotic Satellite Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Ding-Xiang Yan
- School of Aeronautics and Astronautics, Robotic Satellite Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 10029, China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Shi J, Zhang Y, Yang N, Guan X, Sheng L, Liu L, Zhong W. Covalently surface-grafting α‑zirconium phosphate nanoplatelets enables collagen fiber matrix with ultraviolet barrier, antibacterial, and flame-retardant properties. Int J Biol Macromol 2024; 254:127999. [PMID: 37949264 DOI: 10.1016/j.ijbiomac.2023.127999] [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: 10/01/2023] [Revised: 11/07/2023] [Accepted: 11/07/2023] [Indexed: 11/12/2023]
Abstract
Manipulating the dispersibility and reactivity of two-dimensional nanomaterials in collagen fibers (CFs) matrix has aroused attention in the fabrication of multifunctional collagen-based nanocomposites. Here, α‑zirconium phosphate nanoplatelets (ZrP NPs) were surface-functionalized with gallic acid (GA) to afford ZrP-GA NPs for engineering CFs matrix. The influence of ZrP-GA NPs on the ultraviolet barrier, antibacterial, and flame-retardant properties of resultant CFs matrix were investigated. Microstructural analysis revealed that ZrP-GA NPs were dispersed and bound within the collagen fibrils and onto the collagen strands in the CFs matrix. The resultant CFs matrix also maintained typical D-periodic structures of collagen fibrils and native branching and interwoven structures of CFs networks with increased porosity and enhanced ultraviolet barrier properties. Inhibition zone testing presented excellent antibacterial activities of the CFs matrix owing to surface grafting of antibacterial GA. Thanks to enhanced dispersion and binding of ZrP NPs with the CFs matrix by surface-functionalization with GA, the resultant CFs matrix reduced the peak heat release rate and the total heat release by 42.9 % and 39.0 %, respectively, highlighting improved flame-retardant properties. We envision that two-dimensional nanomaterials possess great potential in developing reasonable collagen-based nanocomposites towards the manufacture of emergent multifunctional collagen fibers-based wearable electronics.
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Affiliation(s)
- Jiabo Shi
- College of Bioresources Chemical and Materials Engineering and National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, No.6 Xuefu Zhonglu, Weiyang District, Xi'an 710021, China.
| | - Yuxuan Zhang
- College of Bioresources Chemical and Materials Engineering and National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, No.6 Xuefu Zhonglu, Weiyang District, Xi'an 710021, China
| | - Na Yang
- College of Bioresources Chemical and Materials Engineering and National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, No.6 Xuefu Zhonglu, Weiyang District, Xi'an 710021, China
| | - Xiaoyu Guan
- College of Bioresources Chemical and Materials Engineering and National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, No.6 Xuefu Zhonglu, Weiyang District, Xi'an 710021, China
| | - Li Sheng
- College of Bioresources Chemical and Materials Engineering and National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, No.6 Xuefu Zhonglu, Weiyang District, Xi'an 710021, China
| | - Leipeng Liu
- College of Bioresources Chemical and Materials Engineering and National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, No.6 Xuefu Zhonglu, Weiyang District, Xi'an 710021, China
| | - Wenbin Zhong
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
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Xiang S, Feng J, Yang H, Feng X. Synthesis and Applications of Supramolecular Flame Retardants: A Review. Molecules 2023; 28:5518. [PMID: 37513390 PMCID: PMC10383342 DOI: 10.3390/molecules28145518] [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: 05/29/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
The development of different efficient flame retardants (FRs) to improve the fire safety of polymers has been a hot research topic. As the concept of green sustainability has gradually been raised to the attention of the whole world, it has even dominated the research direction of all walks of life. Therefore, there is an urgent calling to explore the green and simple preparation methods of FRs. The development of supramolecular chemistry in the field of flame retardancy is expanding gradually. It is worth noting that the synthesis of supramolecular flame retardants (SFRs) based on non-covalent bonds is in line with the current concepts of environmental protection and multi-functionality. This paper introduces the types of SFRs with different dimensions. SFRs were applied to typical polymers to improve their flame retardancy. The influence on mechanical properties and other material properties under the premise of flame retardancy was also summarized.
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Affiliation(s)
- Simeng Xiang
- College of Materials Science and Engineering, Chongqing University, Shapingba, Chongqing 400044, China
| | - Jiao Feng
- College of Materials Science and Engineering, Chongqing University, Shapingba, Chongqing 400044, China
| | - Hongyu Yang
- College of Materials Science and Engineering, Chongqing University, Shapingba, Chongqing 400044, China
| | - Xiaming Feng
- College of Materials Science and Engineering, Chongqing University, Shapingba, Chongqing 400044, China
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Han S, Yang F, Li Q, Sui G, Su X, Dai J, Ma J. Tackling smoke toxicity and fire hazards of thermoplastic polyurethane by mechanochemical combination of Cu₂O nanoparticles and zirconium phosphate nanosheets. Polym Degrad Stab 2023. [DOI: 10.1016/j.polymdegradstab.2023.110350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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