## Abstract A series of wellโdefined poly(ether ketone ketone) (PEKK)/sodium sulfonated poly(aryl ether ketone) (SโPAEK) block copolymers of high molecular weights was prepared by direct nucleophilic polymerization of hydroquinone with sodium 5,5โฒโcarbonylbis(2โfluorobenzene sulfonate) (**1**) and
Comparison of the water uptake and swelling between sulfonated poly(phthalazinone ether ketone ketone)s and sulfonated poly(arylene ether ketone ketone)s
โ Scribed by Liping Shen; Guyu Xiao; Deyue Yan; Guoming Sun; Pinfang Zhu; Zhu Na
- Publisher
- Springer
- Year
- 2005
- Tongue
- English
- Weight
- 328 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0170-0839
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Several kinds of commercially available polymers of the type poly(oxy-1,4-phenylenecarbonyl-1,4-phenylene) were sulfonated by reaction with mixtures of sulfuric acid and oleum. The ether/carbonyl group ratio of the polymer chain varied from 0.67 to 2.0. With decreasing amounts of ether links in the
Poly(ether ketone ketone) was sulfonated using fumic sulfuric acid and used for preparation of proton conductive membranes. The sulfonation degree was evaluated by elemental and thermal analysis and the IEC values were determined by titration. The proton conductivity of membranes with sulfonation de
## Abstract The solubility parameter of sulfonated poly(ether ether ketone) (SPEEK) was investigated. SPEEK exhibited two solubility parameters, 26.4 and 35.7 J^1/2^ cm^โ3/2^, and was similar in that respect to Nafion, which has two cohesive energy densities. The theoretical solubility parameter of