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Liu FL, He JJ, Yang HX, Yang SY. Improved Properties of Aromatic Polyamide Tape-casting Films. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2445-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Meng C, Li X, Zhang B, Dai Y, Cheng Z, Luo L, Chen Y, Liu X. C-N Coupling Reactions on Graphene with Aromatic Macromolecules and the Spatial Conformation of Grafted Macromolecules. Chemistry 2020; 26:1819-1826. [PMID: 31808197 DOI: 10.1002/chem.201904014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Indexed: 11/06/2022]
Abstract
The fabrication of advanced graphene-based nanocomposites with high-performance polymers requires covalent modification of graphene with aromatic macromolecules. Herein, C-N coupling reactions between fluorinated graphene (FG) and aromatic polyamides containing the benzimidazole moiety are successfully achieved. The optimized conditions are presented based on the nucleophilic behavior of the C-N coupling reaction on graphene. Different from the C-N coupling reaction between two small aromatic molecules, the conformation of grafted aromatic polyamide after reaction changes from torsional to paralleled alignment on graphene with the molecular length increment. Non-covalent interactions between graphene and aromatic polyamides result in this conformational change owing to the extended π systems of graphene and aromatic polyamides, and the synergistic effect of covalent and non-covalent interactions is put forward. As a consequence, graphene dispersibility is greatly enhanced in the solution of aromatic polyamide.
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Affiliation(s)
- Chenbo Meng
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan, 610065, P. R. China
| | - Xinkai Li
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan, 610065, P. R. China
| | - Bingjie Zhang
- College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, P. R. China
| | - Yu Dai
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan, 610065, P. R. China
| | - Zheng Cheng
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan, 610065, P. R. China
| | - Longbo Luo
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan, 610065, P. R. China
| | - Yue Chen
- State Key Lab of Fluorinated Functional Membrane Materials, Dongyue Polymer Material Company of Dongyue Federation, Zibo, Shandong, 256401, P. R. China
| | - Xiangyang Liu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, Sichuan, 610065, P. R. China
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Dai Y, Cheng Z, Meng C, Yuan Y, Luo L, Liu X. Dissolution of Aramid by Ionization of Byproduct HCl Promoted by Acetate. ChemistrySelect 2019. [DOI: 10.1002/slct.201801843] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Dai
- State key laboratory of polymer material and engineering; College of Polymer science and engineering; Sichuan University (China)
| | - Zheng Cheng
- State key laboratory of polymer material and engineering; College of Polymer science and engineering; Sichuan University (China)
| | - Chenbo Meng
- State key laboratory of polymer material and engineering; College of Polymer science and engineering; Sichuan University (China)
| | - Yihao Yuan
- State key laboratory of polymer material and engineering; College of Polymer science and engineering; Sichuan University (China)
| | - Longbo Luo
- State key laboratory of polymer material and engineering; College of Polymer science and engineering; Sichuan University (China)
| | - Xiangyang Liu
- State key laboratory of polymer material and engineering; College of Polymer science and engineering; Sichuan University (China)
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