- Synthesis and properties of novel fluorinated polyamides based on 2-trifluoromethyl-4,4′-diaminodiphenylether
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A series of soluble fluorinated polyamides (4a-h) were synthesized from 2-trifluoromethyl-4,4′-diaminodiphenylether (2) with various aromatic diacids (3a-c) and imide-containing diacids (3d-h) via direct polycondensation with triphenyl phosphite and pyrid
- Yang, Chin-Ping,Chen, Ruei-Shin,Chen, Kuei-Hung,Chen, Ya-Ping
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- Synthesis and characterization of novel fluorinated polyurethane elastomers
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A series of fluorinated polyurethane elastomers were synthesized from 2-trifluoromethyl-4,4'-diaminodiphenyl ether, which was derived from 2-chlorobenzotrifluoride and p-nitrophenol. The structure and properties of fluorinated polyurethane elastomers were measured by fourier transform infrared spectroscopy, thermogravimetric analysis, microscale combustion colorimeter, water absorption and contact angle measurement. The results show the fluorinated polyurethane elastomers prepared from 2-trifluoromethyl-4,4'-diaminodiphenyl ether have lower surface tension, better hydrophobic property and thermal stability and good mechanical properties. Furthermore, the introduction of fluorine into fluorinated polyurethane elastomers improved the flame retardancy. With the content of fluorine increasing from 1.5 to 2.8 %, the peak heat release rate and total heat release decreased from 605.4 w/g and 23.7 kJ/g to 511.0 w/g and 22.4 kJ/g, indicating that the flame retardant property of polyurethane elastomer increased with the increase in the fluorine content.
- Xu,Lu,Hu,Yin,Zhang
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p. 2284 - 2288
(2012/02/15)
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- Enhanced redox stability and electrochromic properties of aromatic polyamides based on N,N-bis(4-carboxyphenyl)-N′,N′-bis(4-tert- butylphenyl)-1,4-phenylenediamine
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A new bis(triphenylamine)-type dicarboxylic acid monomer, N,N-bis(4-carboxyphenyl)-N′,N′-bis(4-tert-butylphenyl)-1, 4-phenylenediamine, was prepared by a well-established procedure and led to a new family of redox-active aromatic polyamides with di-tert-b
- Wang, Hui-Min,Hsiao, Sheng-Huei
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experimental part
p. 337 - 351
(2012/01/12)
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