Determination of Copolymer Composition by Combustion Analysis for Carbon and Hydrogen

Abstract

The procedure described attains its accuracy and precision by the refinement and improvement of conventional simple operations over a periods of years. The trend in analysis recently is, of course, toward the use of rapid physical methods. In a great many instances these involve relative measurements requiring the initial establishment of reference materials with compositions determined by methods such as the one here described, which bases the numbers derived solely on readings of an analytical balance. In fact, as already mentioned, one of the principal applications of the present method has been in the establishment of the relation between refractive index and styrene content for SBR polymers so that refractive index measurements can be used in routine determinations of bound styrene content.

Composition Analysis of Grafted ABS and its Blend Copolymers Using a Combination of 1H NMR Spectroscopy and Nitrogen Element Analysis

“…Elemental analysis, which investigates the composition of organic, halogen, and inorganic elements present in a substance, can also be applied to the qualitative and quantitative analysis of polymers 16,39 . Thus, CHN elemental analysis was performed to analyze the composition of the ABS samples (Table 2).…”