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Evidences of correlation between polymer particle size and Raman scattering

✍ Scribed by Marlon M. Reis; Pedro H.H. Araújo; Claudia Sayer; Reinaldo Giudici

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
151 KB
Volume
44
Category
Article
ISSN
0032-3861

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✦ Synopsis

This work describes evidences of correlation between polymer particle size and Raman scattering and shows that it is possible to use Raman scattering to monitor the evolution of average particle size during emulsion polymerization reactions. The main focus is the estimation of the average polymer particle diameter from spectra collected in a short acquisition time and consequently low signal-to-noise ratio. Finally, a multivariate linear model, (Partial Least Square-PLS), is fitted from the reaction data and a good linearity between spectra and average polymer particle diameter is found. It is shown that despite varying monomer and polymer concentrations it is possible to monitor average particle sizes during emulsion polymerization reactions using Raman spectroscopy.

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✍ Marlon M. Reis; Pedro H. H. Araújo; Claudia Sayer; Reinaldo Giudici 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 99 KB

## Abstract This work describes the estimation of polymer particle size from NIR spectra collected in situ and online in an automated reactor. A good linearity between spectra and average polymer particle diameter is found. The multivariate linear model is also tested with an independent data set n