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Updated: Jul 3, 2026

MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups
Published on: October 3, 2025
Self Organising Maps for distinguishing polymer groups using thermal response curves obtained by dynamic mechanical
Gavin R Lloyd1, Richard G Brereton, John C Duncan
1Centre for Chemometrics, School of Chemistry, University of Bristol, Cantocks Close, Bristol, BS8 1TS, UK.
Abstract:
Self Organising Maps are described including the U-Matrix, component planes, hit histograms, quality indicators as mean quantisation error and topological error. Software was written in Matlab and several new approaches for visualising multiclass maps are employed. The method is applied to a dataset consisting of the Dynamic Mechanical Analysis of 293 polymers, involving heating the polymers over a temperature range of -51 degrees C to 270 degrees C. These can be characterised in three different ways (a) amorphous or semi-crystalline (b) as 9 groups (c) as 30 grades.
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