Characterisation of the comonomer composition and distribution of copolymers using chemometric techniques |
| |
Authors: | Hughes J Shanks R Cerezo F |
| |
Institution: | (1) Applied Chemistry, RMIT University, GPO Box 2476V, Melbourne, 3001, Australia |
| |
Abstract: | Chemometric techniques have been applied to FTIR and DSC data to correlate polymer composition. Since structural differences
in the polymers with only hydrocarbon structure, often cause subtle changes in spectra, the ability of chemometric techniques
is required to discern these differences. FTIR spectra and thermal fractionation using DSC were measured for 28 types of polyethylenes
(PE) varying in chain branching type, content and distribution. Unsupervised clustering methods such as principal component
analysis (PCA) and supervised discriminant analysis were used to classify the PEs according to their structural class. The
DSC data was the more successful in both classifying PEs according to their class.
This revised version was published online in July 2006 with corrections to the Cover Date. |
| |
Keywords: | DSC chemometrics discriminant analysis polyethylenes thermal fractionation |
本文献已被 SpringerLink 等数据库收录! |