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Journal articles
Open Access
Using multi-method analysis to identify challenging paper machine deposits and defects, TAPPI Journal March 2025

ABSTRACT: Based on its speed and versatility, Fourier transform infrared (FTIR) spectroscopy is the industry’s common starting point for analysis of a paper machine deposit or defect sample. However, certain contaminants and papermaking process additives cannot be precisely identified solely by infrared spectral interpretation. This lack of specificity could lead to a misinterpretation of the composition of the deposit or defect. A multi-method analysis uses data from two or more analytical techniques, including FTIR spectroscopy, microbiological staining/phase contrast microscopy, pyrolysis-gas chromatography/mass spectrometry (Pyro-GC/MS), and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), to produce a more specific assessment of a sample’s composition. This paper discusses the use of a multi-method analysis in deposit and defect analysis and presents several case studies that demonstrate how this comprehensive approach can often produce an interpretation result of greater conviction and value to the papermaker.

Journal articles
Magazine articles
Open Access
Combustion behavior of kraft black liquor droplets from hot

Combustion behavior of kraft black liquor droplets from hot water pretreated hardwood and softwood chips, November 2016 TAPPI JOURNAL

Journal articles
Magazine articles
Open Access
Novel CaCO3-polymer nanocomposite fillers for the improvemen

Novel CaCO3-polymer nanocomposite fillers for the improvement of bagasse-based papers, November 2016 TAPPI JOURNAL

Journal articles
Open Access
Preparation and characterization of bioactive and breathable

Preparation and characterization of bioactive and breathable polyvinyl alcohol nanowebs using a combinational approach, October 2016 TAPPI JOURNAL

Journal articles
Magazine articles
Open Access
Improving the efficiency of hydrogen peroxide bleaching of c

Improving the efficiency of hydrogen peroxide bleaching of chemimechanical pulp by continuous replenishment of bleaching chemicals, TAPPI JOURNAL June 2017

Journal articles
Magazine articles
Open Access
Melt-blown compostable polyester films with lignin, TAPPI J

Melt-blown compostable polyester films with lignin, TAPPI JOURNAL March 2017

Journal articles
Magazine articles
Open Access
The Chinese ban on recovered paper imports

The Chinese ban on recovered paper imports: An international disruption, TAPPI JOURNAL November 2017

Journal articles
Magazine articles
Open Access
Formation mechanisms of “jellyroll” smelt in kraft recovery

Formation mechanisms of “jellyroll” smelt in kraft recovery boilers, TAPPI JOURNAL October 2017

Journal articles
Open Access
Bleaching optimization at WestRock mill in Covington, Virgi

Bleaching optimization at WestRock mill in Covington, Virginia, TAPPI JOURNAL September 2016

Journal articles
Open Access
Using white liquor as the alkali source in oxygen delignific

Using white liquor as the alkali source in oxygen delignification, TAPPI JOURNAL September 2016