Polymer/polymer diffusion. I. Experimental technique

Autor:	Robert L. Laurence, Fraser P. Price, Paul T. Gilmore, Edwin L. Thomas
Rok vydání:	2007
Předmět:	chemistry.chemical_classification Materials science Scanning electron microscope General Engineering Polymer Thermal diffusivity Energy analysis Fluorescence Vinyl chloride chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry Polymer blend Diffusion (business)
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
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ff0c094554393d0c042711dac7f40fde https://doi.org/10.1002/polc.5070630107 Zobrazit plný text záznamu