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|Title:||Degradation behavior of polyanilines with different modes of doping|
|Authors:||Neoh, K.G. |
|Citation:||Neoh, K.G.,Kang, E.T.,Tan, K.L. (1994). Degradation behavior of polyanilines with different modes of doping. Polymer Degradation and Stability 43 (1) : 141-147. ScholarBank@NUS Repository.|
|Abstract:||The degradation behavior of three different types of polyaniline salts: (i) polyaniline externally protonated by HClO4 or metanilic acid, (ii) self-doped polyaniline by sulfonation of emeraldine base, and (iii) co-polymers of metanilic acid and aniline possessing simultaneous self-doping and external doping by either HClO4 or metanilic acid, are compared under heat and water treatment. X-ray photoelectron spectroscopy has been used to follow the changes in the doping level and the chemical states of the nitrogen and dopant in the salts. The HClO4-protonated polyaniline undergoes deprotonation most easily upon thermal and water treatment. The SO3 - groups in the metanilic acid protonated polyaniline and the self-doped polyanilines possess different degrees of thermal stability. The SO3 - groups covalently bonded to polyaniline via sulfonation are the least stable. © 1994.|
|Source Title:||Polymer Degradation and Stability|
|Appears in Collections:||Staff Publications|
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