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Using Raman spectroscopic imaging for non‐destructive analysis of filler distribution in chalk filled polypropylene
Author(s) -
Boros Evelin,
Bak Porse Peter,
Nielsen Inga,
Kucheryavskiy Sergey
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43016
Subject(s) - polypropylene , raman spectroscopy , materials science , molding (decorative) , composite material , filler (materials) , spectral analysis , analytical chemistry (journal) , spectrometer , optics , chemistry , spectroscopy , chromatography , physics , quantum mechanics
A feasibility study on using Raman spectral imaging for visualization and analysis of filler distribution in chalk filled polypropylene samples has been carried out. The spectral images were acquired using a Raman spectrometer with 785 nm light source. Eight injection‐molded samples with concentration of chalk 25% and 50% were used in the experiment. Two methods for spectral unmixing were applied to the images and both revealed almost identical distribution maps over the samples’ surface. The maps also correlated with the ones obtained for several separated peaks, typical for the chalk and the polypropylene. The revealed distribution patterns show the same trend for each concentration level and agree with theoretical explanation of plastic flow into an injection molding tool. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43016.