| Synthesis and properties of new pyridine-bridged poly(ether-imide)s based on 4-(4-trifluoromethylphenyl)-2,6-bis[4-(4-aminophenoxy)phenyl]pyridine | |
| Department | 固体润滑国家重点实验室 |
Wang XL(王晓龙) ; Li YF(李彦峰); Gong CL(功臣亮); Ma T(马涛); Yang FC(杨峰春)
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| 2008 | |
| Source Publication | Journal of Fluorine Chemistry
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| ISSN | 0022-1139 |
| Volume | 129Pages:56-63 |
| Abstract | A novel pyridine-containing aromatic diamine monomer, 4-(4-trifluoromethylphenyl)-2,6-bis[4-(4-aminophenoxy)phenyl]pyridine (FAPP), was synthesized via the modified Chichibabin pyridine synthesis of 4-(4-nitrophenoxy)-acetophenone with 4-trifluoromethyl-benzaldehyde, followed by a catalytic reduction. A series of fluorinated pyridine-bridged aromatic poly(ether-imide)s were prepared from the resulting diamine monomer with various aromatic dianhydrides via a conventional two-step process. The resulting polyimides exhibited good solubility in aprotic amide solvents and m-cresol, such as N,N-dimethylacetamide, N-methyl-2-pyrrolidone, and m-cresol, etc., which possessed the inherent viscosities of 0.76–0.91 dL/g. Strong and flexible poly(ether-imide) films were obtained, which showed excellent thermal properties with the glass transition temperatures of 268–353 8C, the temperature at 5% weight loss of 547–595 8C, and the residue at 700 8C of 65–74%in nitrogen, good mechanical properties with the tensile strengths of 87.6–104.2 MPa and elongations at breakage of 8.9–12.6%, and good optical transparency with the cut-off wavelengths of 357–380 nm, as well as low dielectric constants in the range of 2.49–3.04 at 1 MHz and low water uptake 0.43–0.69%. Furthermore, the resulted polyimides derived from FAPP were compared with non-fluorinated analogous polyimides and fluorinated analogous polyimides with trifluoromethyl groups in different positions, and the effects of substituents were also investigated and discussed. |
| Keyword | Fluorinated Polyimides Polyimides Diamine Monomer Pyridine Moieties |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the State Key Laboratory of Applied Organic Chemistry |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/2632 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Li YF(李彦峰) |
| Recommended Citation GB/T 7714 | Wang XL,Li YF,Gong CL,et al. Synthesis and properties of new pyridine-bridged poly(ether-imide)s based on 4-(4-trifluoromethylphenyl)-2,6-bis[4-(4-aminophenoxy)phenyl]pyridine[J]. Journal of Fluorine Chemistry,2008,129:56-63. |
| APA | 王晓龙,李彦峰,功臣亮,马涛,&杨峰春.(2008).Synthesis and properties of new pyridine-bridged poly(ether-imide)s based on 4-(4-trifluoromethylphenyl)-2,6-bis[4-(4-aminophenoxy)phenyl]pyridine.Journal of Fluorine Chemistry,129,56-63. |
| MLA | 王晓龙,et al."Synthesis and properties of new pyridine-bridged poly(ether-imide)s based on 4-(4-trifluoromethylphenyl)-2,6-bis[4-(4-aminophenoxy)phenyl]pyridine".Journal of Fluorine Chemistry 129(2008):56-63. |
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