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The synthesis and characterization of post sulfonated poly (arylene ether sulfone)s utilizing chlorosulfonic acid and it's silyl derivative.
| Content Provider | CiteSeerX |
|---|---|
| Author | Arnett, Natalie Y. Harrison, W. L. Mcgrath, J. E. |
| Abstract | The proton electrolyte membrane (PEM) is an integral component of a fuel cell.1,2 Sulfonated poly (arylene ether sulfone)s, which are potential candidates for PEM, are prepared via nucleophilic aromatic substitution and post- sulfonation. Chlorosulfonic acid was used as the sulfonating agent and chlorotrimethylsilane is also used as a protecting agent against cleavage of the isopropylidene group. In this research, sulfonation of three types of poly (arylene ether sulfone)s monomers derived from bisphenol A, 6F bisphenol and biphenol were carried out. The polymers were chosen on the basis of morphology, thermal considerations, and hydrophobicity. Transparent, ductile films of the sulfonated polymers were solution cast from dimethylacetamide (DMAc) or N-methyl-2-pyrrolidinone (NMP) and characterized using FTIR, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), intrinsic viscosity, and proton NMR. The degree of post-sulfonation was difficult to control, but FTIR was useful to characterize the sulfonation content. The Tg value could (in some cases) be measured on DSC. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Arylene Ether Sulfone Utilizing Chlorosulfonic Acid Post Sulfonated Poly Silyl Derivative Thermogravimetric Analysis Sulfonated Polymer Proton Nmr Potential Candidate Isopropylidene Group Ductile Film Fuel Cell Integral Component Tg Value Post Sulfonation Thermal Consideration Chlorosulfonic Acid Sulfonating Agent Solution Cast Sulfonation Content Intrinsic Viscosity Nucleophilic Aromatic Substitution Proton Electrolyte Membrane |
| Content Type | Text |
