Determination of total short-chain branching in polyethylenes by computerized data processing of infrared spectra
Article first published online: 9 MAR 2003
Copyright © 1983 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 28, Issue 12, pages 3707–3714, December 1983
How to Cite
Dankovics, A. and Füzes, L. (1983), Determination of total short-chain branching in polyethylenes by computerized data processing of infrared spectra. J. Appl. Polym. Sci., 28: 3707–3714. doi: 10.1002/app.1983.070281212
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Accepted: 23 MAY 1983
- Manuscript Received: 13 AUG 1982
A computer method is described to determine the short-chain branching of polyethylene from IR spectroscopic data. The shape of the band at 1378 cm−1 (characteristic to the methyl side groups) was calculated by using first a deconvolution procedure (Ishige method) for the envelope curve of the overlapping peaks in the region of 1300-1400 cm−1, followed by a convolution calculus applied only to the deconvoluted points of the peak in question. The results were in good agreement with values determined by Willbourn's compensation method.