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Tang L, Tang Y, Zhang J, Lin Y, Kong J, Zhou K, Gu J. High-strength super-hydrophobic double-layered PBO nanofiber-polytetrafluoroethylene nanocomposite paper for high-performance wave-transparent applications. Sci Bull (Beijing) 2022; 67:2196-2207. [DOI: 10.1016/j.scib.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/12/2022] [Accepted: 10/08/2022] [Indexed: 11/17/2022]
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2
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Gao Y, Wu S, Li C, Xiao Y, Liu J, Zhang B. Hydrogen-Bond- and Shear-Field-Induced Self-Assembly for the Efficient Preparation of Polybenzoxazole Nanofibers with Excellent Mechanical Properties and Heat Resistance. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yufu Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
- University of the Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Shaohua Wu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Chuncheng Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Yaonan Xiao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Jiajian Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
| | - Bo Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing100190, P. R. China
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Jin JU, Hahn JR, You NH. Structural Effect of Polyimide Precursors on Highly Thermally Conductive Graphite Films. ACS OMEGA 2022; 7:25565-25572. [PMID: 35910144 PMCID: PMC9330194 DOI: 10.1021/acsomega.2c02731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, polyimide (PI) with high carbonization yield was used as a precursor to prepare graphite films with high thermal conductivity. The crystallinity, grain size, and thermal conductivity of the graphite films were characterized and found to vary according to the chemical structure of the PI precursor. Aromatic PIs containing ortho-substituted hydroxyl groups in the PI main chain (DHB-BPDA) were synthesized by the polycondensation reaction of 3,3'-dihydroxybenzidine (DHB) and 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA). The DHB-BPDA is converted to a polybenzoxazole (PBO) structure through thermolysis reaction during carbonization. The PBO containing a benzene ring and a heterocycle group can provide a strong main chain and high thermal stability due to its resonant structure. The graphite film prepared from DHB-BPDA exhibited a large grain size (63.727 nm) and a high thermal conductivity of 916 W/(mK).
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Affiliation(s)
- Jeong-Un Jin
- Institute
of Advanced Composite Materials, Korea Institute
of Science and Technology (KIST), Jeonbuk 55324, Republic of Korea
- Department
of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Jae Ryang Hahn
- Department
of Chemistry and Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Nam-Ho You
- Institute
of Advanced Composite Materials, Korea Institute
of Science and Technology (KIST), Jeonbuk 55324, Republic of Korea
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Ultra-High Tg Thermoset Fibers Obtained by Electrospinning of Functional Polynorbornenes. NANOMATERIALS 2022; 12:nano12060967. [PMID: 35335779 PMCID: PMC8951598 DOI: 10.3390/nano12060967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/05/2023]
Abstract
Insertion polynorbornenes (PBNEs) are rigid-rod polymers that have very high glass transition temperatures (Tg). In this study, two functional PNBEs were electrospun in the presence of a variety of cross-linkers, resulting in fibers with Tgs greater than 300 °C. The fibers are long (several mm), rigid, and with diameters that can be tuned in the range 300 nm–10 μm. The electrospinning process can be used to encapsulate dyes or graphene dots. Due to the high cross-linking density of the fiber, dye leaching is prevented. In contrast with other rigid-rod polymers, electrospinning of PNBE is facile and can be performed at injection rates as high as 1 mL/min.
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Huangfu MG, Shen DX, Zhi XX, Zhang Y, Jia YJ, An YC, Wei XY, Liu JG. Preparation and Characterization of Electrospun Fluoro-Containing Poly(imide-benzoxazole) Nano-Fibrous Membranes with Low Dielectric Constants and High Thermal Stability. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:537. [PMID: 33669852 PMCID: PMC7923222 DOI: 10.3390/nano11020537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 11/30/2022]
Abstract
The rapid development of advanced high-frequency mobile communication techniques has advanced urgent requirements for polymer materials with high-temperature resistance and good dielectric properties, including low dielectric constants (low-Dk) and low dielectric dissipation factors (low-Df). The relatively poor dielectric properties of common polymer candidates, such as standard polyimides (PIs) greatly limited their application in high-frequency areas. In the current work, benzoxazole units were successfully incorporated into the molecular structures of the fluoro-containing PIs to afford the poly(imide-benzoxazole) (PIBO) nano-fibrous membranes (NFMs) via electrospinning fabrication. First, the PI NFMs were prepared by the electrospinning procedure from organo-soluble PI resins derived from 2,2'-bis(3,4-dicarboxy-phenyl)hexafluoropropane dianhydride (6FDA) and aromatic diamines containing ortho-hydroxy-substituted benzamide units, including 2,2-bis[3-(4-aminobenzamide)-4-hydroxylphenyl]hexafluoropropane (p6FAHP) and 2,2-bis[3-(3-aminobenzamide)-4-hydroxyphenyl]hexafluoropropane (m6FAHP). Then, the PI NFMs were thermally dehydrated at 350 °C in nitrogen to afford the PIBO NFMs. The average fiber diameters (dav) for the PIBO NFMs were 1225 nm for PIBO-1 derived from PI-1 (6FDA-p6FAHP) precursor and 816 nm for PIBO-2 derived from PI-2 (6FDA-m6FAHP). The derived PIBO NFMs showed good thermal stability with the glass transition temperatures (Tgs) over 310 °C and the 5% weight loss temperatures (T5%) higher than 500 °C in nitrogen. The PIBO NFMs showed low dielectric features with the Dk value of 1.64 for PIBO-1 and 1.82 for PIBO-2 at the frequency of 1 MHz, respectively. The Df values were in the range of 0.010~0.018 for the PIBO NFMs.
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Affiliation(s)
- Meng-Ge Huangfu
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
| | - Deng-Xiong Shen
- Aerospace Research Institute of Materials& Processing Technology, Beijing 100076, China;
| | - Xin-Xin Zhi
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
| | - Yan Zhang
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
| | - Yan-Jiang Jia
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
| | - Yuan-Cheng An
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
| | - Xin-Ying Wei
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
| | - Jin-Gang Liu
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (M.-G.H.); (X.-X.Z.); (Y.Z.); (Y.-J.J.); (Y.-C.A.); (X.-Y.W.)
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Theoretical study and experimental verification of a novel conjugated and coplanar HPBO polymers with hydrogen bond structure. POLYMER 2019. [DOI: 10.1016/j.polymer.2018.11.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Díez B, Cuadrado P, Marcos-Fernández Á, de la Campa JG, Tena A, Prádanos P, Palacio L, Lee YM, Alvarez C, Lozano ÁE, Hernández A. Thermally rearranged polybenzoxazoles made from poly(ortho-hydroxyamide)s. Characterization and evaluation as gas separation membranes. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.03.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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8
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Jiang S, Chen Y, Duan G, Mei C, Greiner A, Agarwal S. Electrospun nanofiber reinforced composites: a review. Polym Chem 2018. [DOI: 10.1039/c8py00378e] [Citation(s) in RCA: 357] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
High performance electrospun nanofibers could be used to fabricate nanofiber reinforced composites.
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Affiliation(s)
- Shaohua Jiang
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Yiming Chen
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Gaigai Duan
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Changtong Mei
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Andreas Greiner
- University of Bayreuth
- Faculty of Biology
- Chemistry and Earth Sciences
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces
- Germany
| | - Seema Agarwal
- University of Bayreuth
- Faculty of Biology
- Chemistry and Earth Sciences
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces
- Germany
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10
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Mirjalili BF, Bamoniri A, Bagheri E. KMnO4/HOAc system promoted one-pot synthesis of benzoxazoles from o-aminophenols or oxidative cyclization of o-hydroxyarylidene anilines at room temperature. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0795-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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11
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Jiang S, Duan G, Chen L, Hu X, Ding Y, Jiang C, Hou H. Thermal, mechanical and thermomechanical properties of tough electrospun poly(imide-co-benzoxazole) nanofiber belts. NEW J CHEM 2015. [DOI: 10.1039/c5nj01040c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrospun PI-co-PBO nanofiber belts possessed superior thermomechanical properties.
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Affiliation(s)
- Shaohua Jiang
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Gaigai Duan
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Linlin Chen
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Xiaowu Hu
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Yichun Ding
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang
- P. R. China
| | | | - Haoqing Hou
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang
- P. R. China
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12
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Ifuku S, Maeta H, Izawa H, Morimoto M, Saimoto H. Preparation of polybenzoxazole nanofibers by a downsizing process. RSC Adv 2015. [DOI: 10.1039/c5ra04679c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Poly(p-phenylene benzobisoxazole) (PBO) nanofibers were prepared from commercially available PBO fiber by a simple downsizing process for the first time.
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Affiliation(s)
- S. Ifuku
- Department of Chemistry and Biotechnology
- Tottori University
- Tottori 680-8552
- Japan
| | - H. Maeta
- Department of Chemistry and Biotechnology
- Tottori University
- Tottori 680-8552
- Japan
| | - H. Izawa
- Department of Chemistry and Biotechnology
- Tottori University
- Tottori 680-8552
- Japan
| | - M. Morimoto
- Department of Chemistry and Biotechnology
- Tottori University
- Tottori 680-8552
- Japan
| | - H. Saimoto
- Department of Chemistry and Biotechnology
- Tottori University
- Tottori 680-8552
- Japan
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13
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Ghosal K, Latha MS, Thomas S. Poly(ester amides) (PEAs) – Scaffold for tissue engineering applications. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.08.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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He Y, Han D, Chen J, Ding Y, Jiang S, Hu C, Chen S, Hou H. Highly strong and highly tough electrospun polyimide/polyimide composite nanofibers from binary blend of polyamic acids. RSC Adv 2014. [DOI: 10.1039/c4ra10075a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aligned electrospun PI nanofibers with excellent mechanical properties were prepared by electrospinning blend-PAA solutions followed by thermal imidization.
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Affiliation(s)
- Yunyun He
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Donghua Han
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Juan Chen
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Yichun Ding
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Shaohua Jiang
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Chunxiang Hu
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Shuiliang Chen
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
| | - Haoqing Hou
- Chemistry and Chemical Engineering College
- Jiangxi Normal University
- Nanchang, P.R. China
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