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Zhu W, Yang M, Wang Q, Zhang X, Li D, Xu Z, Liu S, Dai Z. An amino trimethylene phosphonic acid‐based chelated boric acid complex that works as a synergistic flame retardant for enhancing the flame retardancy of cotton fabrics. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202200525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Wenju Zhu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Mingyang Yang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Qing Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Xiaohan Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Dongxiang Li
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Zelong Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Shuixia Liu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Zhao Dai
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
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Afshari M, Dinari M. Improving the Reaction-to-Fire Properties of Thermoplastic Polyurethane by New Phosphazene-Triazinyl-Based Covalent Organic Framework. ACS APPLIED MATERIALS & INTERFACES 2022; 14:49003-49013. [PMID: 36282083 DOI: 10.1021/acsami.2c14509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In this study, an approach to simultaneously improve fire resistance and mechanical performance of thermoplastic polyurethane (TPU) was introduced through the penetration of a conjugated network containing nitrogen and phosphorus elements. For this purpose, a Bg-HCCP COF was synthesized through a solvothermal method from benzoguanamine (Bg) and hexachlorophosphazene (HCCP) monomers. Then, it was combined with TPU using the wet mixing method. The TPU/Bg-HCCP composites showed better mechanical strength than the untreated sample. The fire safety of TPU/Bg-HCCP composites was greatly improved by increasing the Bg-HCCP contents. The reduction of the peak heat release rate and the total heat release for the TPU/Bg-HCCP composite with 3 wt % Bg-HCCP were about 44.8 and 60.4%, respectively. Besides, the results showed that adding Bg-HCCP to TPU significantly improved the suppression of smoke generation so that 3% by weight of the fire retardant reduced the total smoke released by 53.1%. It also decreased the peak of the carbon monoxide production rate by 26.5%. Generally, our research provides a promising strategy for constructing flame-retardant composites with high performance.
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Affiliation(s)
- Mohaddeseh Afshari
- Department of Chemistry, Isfahan University of Technology, Isfahan84156-83111, Islamic Republic of Iran
| | - Mohammad Dinari
- Department of Chemistry, Isfahan University of Technology, Isfahan84156-83111, Islamic Republic of Iran
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Liu J, Li M, Yu J. High-Performance Electrochromic Covalent Hybrid Framework Membranes via a Facile One-Pot Synthesis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2051-2057. [PMID: 34978179 DOI: 10.1021/acsami.1c21541] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Porous framework materials have sparked enormous interest in the electrochromic field, as they possess intrinsic high porosity and a large surface area that are beneficial for electron and ion transport. However, the fabrication of these porous framework materials often requires multiple processing steps or harsh reaction conditions, which significantly limit large-scale fabrication of such materials. In this work, we report a one-pot in situ polycondensation method to construct electrochromic covalent hybrid framework membranes via nucleophilic substitutions between hexachlorocyclotriphosphazene (HCCP) and triphenylamine (TPA) in an ambient environment. With the high transparency of polyphosphazene in a wide optical range, the constructed phosphazene-triphenylamine (PPTA) covalent hybrid framework membranes can be reversibly switched between light gray and dark blue, with a high transmittance change of up to 79.8%@668 nm and fast switching time (<4 s). Owing to the easy one-pot fabrication and good electrochromic properties, the PPTA covalent hybrid framework membrane has great potential in various fields such as displays and dynamic optical windows.
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Affiliation(s)
- Jian Liu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Minglun Li
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jing Yu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
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Usri SNK, Jamain Z, Makmud MZH. A Review on Synthesis, Structural, Flame Retardancy and Dielectric Properties of Hexasubstituted Cyclotriphosphazene. Polymers (Basel) 2021; 13:2916. [PMID: 34502956 PMCID: PMC8433970 DOI: 10.3390/polym13172916] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/23/2022] Open
Abstract
Hexachlorocyclotriphosphazene is a ring compound consisting of an alternating phosphorus and nitrogen atom with two chlorine substituents attached to the phosphorus atom. The six chlorine atoms attached to this cyclo compound can be substituted with any different nucleophile that leads to changes in different chemical and physical properties. The major topics that were investigated in this research are the flame retardancy and dielectric properties of cyclotriphosphazene compounds. Cyclotriphosphazene compounds have high potential to act as a flame retardant, and this compound consists of two active elements attributed to its high flame-retardant character. This compound also demonstrated good ability as a flame retardant due to its low toxicity and less smoke produced. In addition, cyclotriphosphazene compounds were also investigated for their dielectric properties. Cyclotriphosphazene has high potential in the electrical field since it has dielectric properties that can be widely studied in the investigation of any potential application. This review presented literature studies focused on recent research development and studies in the field of cyclotriphosphazene that focused on synthesis, structural, flame retardancy, and dielectric properties of hexachlorocyclotriphosphazene compounds.
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Affiliation(s)
| | - Zuhair Jamain
- Sustainable Materials and Renewable Energy (SMRE) Research Group, Faculty of Science and Natural Resources, Universiti Malaysia Sabah (UMS), Kota Kinabalu 88400, Sabah, Malaysia; (S.N.K.U.); (M.Z.H.M.)
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Zhang M, Li Y, Bai C, Guo X, Han J, Hu S, Jiang H, Tan W, Li S, Ma L. Synthesis of Microporous Covalent Phosphazene-Based Frameworks for Selective Separation of Uranium in Highly Acidic Media Based on Size-Matching Effect. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28936-28947. [PMID: 30068077 DOI: 10.1021/acsami.8b06842] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
On the basis of high stability of phosphorus-oxygen linkage, we constructed two microporous covalent phosphazene-based frameworks (CPFs), for the first time, by choosing hexachlorocyclotriphosphazene as a core unit and polyhydroxy aromatic compounds (hydroquinone or phloroglucinol) as monomers, named CPF-D and CPF-T, respectively. Characterization studies by using Fourier transform infrared, nuclear magnetic resonance, thermal gravimetric analysis, 60Co γ-ray irradiation, and so forth, demonstrated that both of the CPF materials have excellent acid and radiation stability and relatively higher thermal stability. The results of batch adsorption experiments show that CPF-T is significantly more capable of sorbing uranium than CPF-D. In a pure uranium system with higher acidity (pH 1), the uranium sorption amount of CPF-T can reach up to 140 mg g-1. Distinctively, in mixed-metal solution with 12 coexisting cations, CPF-T shows relatively stable and excellent uranium adsorption capability over a wide range of acidity (pH 4 to 3 M HNO3), and the difference in uranium sorption amounts is less than 30% with the maximum of 0.26 mmol g-1 at pH 4 and the minimum of 0.20 mmol g-1 at 3 M HNO3, which is far superior to that of the conventional solid-phase extractant (SPE) materials previously reported. The research results suggested that the sorption model based on the speculated mechanism of size-matching plus hydrogen bond network has played a dominant role in the process of uranium adsorption. The proposed strategy for the one-pot fabrication of an acid-resistant microporous framework materials by bridging the aromatic monomers via P-O bonds provides an alternative approach for the design and synthesis of new SPE materials with size-matching function desired for effective separation of uranium or other valuable metals from highly acidic environments.
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Affiliation(s)
- Meicheng Zhang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
| | - Yang Li
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
| | - Chiyao Bai
- Chengdu New Radiomedicine Technology CO. LTD. , Chengdu 610207 , P. R. China
| | - Xinghua Guo
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
| | - Jun Han
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang 621900 , P. R. China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianyang 621900 , P. R. China
| | - Hongquan Jiang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
| | - Wang Tan
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
| | - Shoujian Li
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
| | - Lijian Ma
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education , Sichuan University , Chengdu 610064 , P. R. China
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