Distributions of Functionality and of Molecular Weights in an Hydroxyl-Terminated Polybutadiene by Dual-Detection Size Exclusion Chromatography

BIELSA, R. O.; BRANDOLINI, M. C.; AKCELRUD, L.; MEIRA, G. R.

JOURNAL OF APPLIED POLYMER SCIENCE

Año: 1994 vol. 54 p. 2125 - 2134

0021-8995

The article deals with data treatment problems associated with the estimation (via dualdetection size exclusion chromatography) of the independent distributions of molecular weight and functionality in a derivatized hydroxyl-terminated polybutadiene. Calculations are based on an approach originally developed for linear copolymers and include corrections for (a) effect of functional groups on instantaneous mass and molecular weights, (b) dependence of refractive index with molecular weight, and (c ) instrumental broadening. Compared to other more laborious analytical methods, the proposed technique is simple and provides accurate results. (c ) instrumental broadening. Compared to other more laborious analytical methods, the proposed technique is simple and provides accurate results. (c ) instrumental broadening. Compared to other more laborious analytical methods, the proposed technique is simple and provides accurate results.