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Your search keyword '"Aikens D"' showing total 15 results
Start Over Author "Aikens D" Publication Year Range More than 50 years ago
15 results on '"Aikens D"'

1. The Unified Laboratory Program for Chemistry Majors

Author

Aikens, D. A.

Abstract

The program objectives are to instruct students in laboratory techniques, experimental procedures, evaluation of results, and laboratory project design. Integration of techniques which may span several areas of chemistry is emphasized in the solution of problems. Current course content of the program is listed. (GS)

Published
1975

2. On-line mass spectrometric monitoring of the polymerization of a phenolic-resin-based material

Author

Aikens, D. A, Wood, G. M, and Upchurch, B. T

Subjects
Inorganic And Physical Chemistry
Abstract

Polymerization of phenolic-resin-based materials requires elevated temperatures. The low thermal conductivity of these materials has led to the use of dielectric heating techniques in lieu of standard convection oven heating to obtain a satisfactory cure. The curing rate and therefore the quality of the cured material depends on the heating rate and maximum temperature attained, parameters which are extremely difficult to measure in dielectric heating units. The dielectric curing of these materials was monitored by using a mass spectrometer to measure the partial pressure of phenol in the gas evolved during polymerization. The resulting plots of phenol partial pressure as a function of time have a characteristic shape, and these may be used to indicate the attainment of complete curing. The validity of the mass spectrometric technique was confirmed by chemical analysis of the polymerized samples.

Published
1975

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