Polyethylene comonomer characterization by using FTIR and a multivariate classification technique
| Autor: | Enric Comas, Ester Caro |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Comonomer
Analytical chemistry 02 engineering and technology Polyethylene 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Butene 0104 chemical sciences Analytical Chemistry Linear low-density polyethylene chemistry.chemical_compound chemistry Hexene Principal component analysis Polymer chemistry Octene Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | Talanta. 163:48-53 |
| ISSN: | 0039-9140 |
| DOI: | 10.1016/j.talanta.2016.10.082 |
| Popis: | Many polyethylene (PE) films used in various packaging applications are based on multi-layer systems and are fabricated by using the coextrusion techniques that can combine different raw materials. The identification of the comonomer type (octene - C8, hexene - C6 and butene - C4) in films, where two or more different linear low density polyethylene (LLDPE) resins are present, is becoming a frequent request. This report presents a novel approach where multivariate classification techniques are used in combination with FTIR for the identification of the comonomer type in coextruded films. A set of different LLDPE coextruded samples have been measured by FTIR, and the resulting spectra processed by Principal Component Analysis (PCA). By projecting the samples to the scores plots a difference is observed as a function of comonomer composition. This approach, compared with others is much faster, as just the time of measuring a film by direct infrared analysis is required. |
| Databáze: | OpenAIRE |
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