Narendran, N. ; Kishore, K. (2002) Hydrolytic degradation and diffusion studies on a polyphosphate ester Journal of Applied Polymer Science, 84 (4). pp. 701-708. ISSN 0021-8995
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/app.100...
Related URL: http://dx.doi.org/10.1002/app.10008
Abstract
A polyphosphate ester was synthesized by interfacial polycondensation of bisphenol-A and phenylphosphorodichloridate. Accelerated hydrolytic degradation studies were conducted under alkaline conditions. The effect of concentration of alkali and temperature were monitored. The rate of degradation reached a maximum value at 6 molar sodium hydroxide solution and then reduced. The activation energy for hydrolytic degradation was found to be 45 kcal/mol. Diffusion of alkali into the polymer pellet was studied at various concentrations of alkali and at various temperatures. The rate of diffusion also attained a maximum at 6M NaOH and the activation energy for diffusion process was found to be 12 kcal/mol.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Hydrolytic Degradation; Polyphosphate Ester; Rate of Degradation; Rate of Diffusion; Activation Energy |
| ID Code: | 32195 |
| Deposited On: | 19 Mar 2011 12:57 |
| Last Modified: | 10 Jun 2011 04:57 |
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