ABSTRACT
This paper reviews problems encountered in the gel permeation chromatography of propellant grade nitrocellulose (12.6% N), blast ing explosive grade (12.2% N) and cellulose nitrated by a mild nondegrading method (13.4% N). Quantitative comparisons show the ef fect of concentration, calibration method, choice of column exclu sion limits and the degree of nitration. The use of low angle laser light scattering to overcome problems in calibration and to show the effect of microgel on the separation is also described.
The changes in molecular weight during the stages of the in dustrial nitration process are described.
