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:
Diffusion coefficients were determined gravimetrically for the diffusion of dioctyl phthalate into disks of suspension-polymerized poly(vinyl chloride) in the temperature range of 65-85°C. After an initial induction period, values of D were obtained which ranged from 10-10 to 10-8 cm.2/sec. and which gave an activation energy of 60 kcal./mole. The diffusion rates showed an inverse dependence on the number-average molecular weight of the poly(vinyl chloride), indicating that the chain ends are the primary point of attack in the diffusion process below the glass transition temperature.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1965.070090119
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