Synthesis and properties of novel side-chain-type sulfonated polyimides
β Scribed by Xinbing Chen; Pei Chen; Ken-ichi Okamoto
- Publisher
- Springer
- Year
- 2009
- Tongue
- English
- Weight
- 453 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0170-0839
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## Abstract A new diamine monomer containing benzimidazoleβ5βsulfonic acid has been synthesised. It has been reacted, alone or mixed with diaminodiphenyl ether, with naphthalenic dianhydride to attain polynaphthalimides in which the sulfonic acid functionality is borne by pendant benzimidazole grou
## Abstract A series of new polyimides containing fluorinated alkoxy side chains are prepared from novel fluorinated alkoxy diamines. The dieletric constant at 1 kHz in the fluorinated polyimides decreases from 3.3 to 2.6 as fluorine content increases. The refractive index also changes from 1.58 to