Raman spectroscopy of polymer latexes

H.J.T. van den Brink, M.L.H. Pepers, A.M. Herk, van

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The influence of elastic light scattering on the Raman signal of polymer latexes was investigated by varying the sample position relative to the confocal Raman probe. Measurements on polystyrene latexes revealed that the abs. Raman signal is very sensitive to the alignment of the sample. Furthermore, it was shown that for particle sizes below 140 nm and solid wt. contents below 20%, changes in the abs. Raman signal can be described fairly well by turbidity laws. For larger particle sizes and higher solid wt. contents deviations occur, but a correlation between these variables and the Raman signal still exists. In contrast, the normalized intensities are not influenced by varying the sample alignment in measurements on polymer latexes when using an excitation laser source at 532 nm. The important consequence of this is that the detn. of chem. compn. is not influenced by the elastic light scattering effects. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)264-272
JournalJournal of Raman Spectroscopy
Volume33
Issue number4
DOIs
Publication statusPublished - 2002

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