Analysis of starch distribution in the paper cross-section by raman microscopy

Enrico Pigorsch*, Matthias Finger, Steffen Thiele, Eike Brunner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


A new Raman microscopy approach was developed to analyze the starch distribution of paper cross-sections in a faster and more specific way than is possible with the currently used iodine-staining method. Raman images were recorded and analyzed from cross-sections of cellulose hand sheets surface-sized with 1% or 2% starch solutions and with different film thicknesses. In addition, Raman imaging analysis of the starch distribution was performed on two industrial papers, an abrasive base paper and a surface-sized recycling paper. The visualization and the quantitative analysis of the starch distribution were performed by using the intensity changes of the Raman starch band at 855 cm -1 and by principal component analysis. Distribution curves were calculated from the intensity data and compared for the samples with different starch concentrations and with results obtained from iodine-stained crosssections of the same samples. The results of this study demonstrate the great potential and the new possibilities of Raman microscopy for studying the z-distribution of chemical components and additives in paper.

Original languageEnglish
Pages (from-to)59-65
Number of pages7
JournalApplied Spectroscopy
Issue number1
Publication statusPublished - Jan 2013
Externally publishedYes


  • Paper cross-section
  • Raman imaging
  • Raman microscopy
  • Starch distribution


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