Polymer/polymer diffusion. I. Experimental technique
Autor: | Robert L. Laurence, Fraser P. Price, Paul T. Gilmore, Edwin L. Thomas |
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Rok vydání: | 2007 |
Předmět: | |
Zdroj: | Journal of Polymer Science: Polymer Symposia. 63:33-44 |
ISSN: | 1936-0959 0360-8905 |
Popis: | Diffusional processes in polymer blends, although important in determining the characteristics of the blend, are poorly understood. Virtually no data are available in the open literature. A novel experimental technique useful in the study of diffusion in compatible polymer/polymer systems is presented. It uses a scanning electron microscope and dispersive energy analysis of the x-ray fluorescence profile in the interdiffusion of two polymer components. The technique is used to determine the diffusivity in a poly(vinyl chloride)-poly(±-caprolactone) at 70°C. The diffusion coefficient [D = (1.59 ± .13) × 10−12cm2/sec] is of the same order as the only reported polymer/ polymer diffusion measurements. |
Databáze: | OpenAIRE |
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