ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A new approach to the study of the migration rate was attempted for dioctylphthalate as plasticizer from solid PVC into liquid methanol. Two different experiments were carried out: first, a classical one by measuring the increase in the plasticizer concentration in solution; second, a new one by measuring the plasticizer concentration inside the solid PVC itself, for different times and for different depths in that solid. Equations of diffusion in unsteady state were found to correlate well with experiments in both cases. Stirring of the solution measured by Reynold's number was found to be important. Measurements were carried out inside the solid PVC, and the profile of the concentration of dioctylphthalate inside the PVC disc was determined at different times. The diffusion coefficient was calculated inside the PVC disc, and it was found to vary with the DOP concentration.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1981.070260225
