Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Collections
Journal articles
Biodegradation of wood extractives from southern yellow pine by ophiostoma piliferum, TAPPI JOURNAL, January 1994, Vol. 77(1)
Biodegradation of wood extractives from southern yellow pine by ophiostoma piliferum, TAPPI JOURNAL, January 1994, Vol. 77(1)
Journal articles
Deinking laser-print paper using ultrasound, TAPPI JOURNAL, March 1994, Vol. 77(3)
Deinking laser-print paper using ultrasound, TAPPI JOURNAL, March 1994, Vol. 77(3)
Journal articles
An instrument to assess the biaxial stress during paper drying, TAPPI JOURNAL, May 1994, Vol. 77(5)
An instrument to assess the biaxial stress during paper drying, TAPPI JOURNAL, May 1994, Vol. 77(5)
Journal articles
Activated sludge treatment of tmp mill effluents part 1: effluent characterization and treatability study, TAPPI JOURNAL, November 1994, Vol. 77(11)
Activated sludge treatment of tmp mill effluents part 1: effluent characterization and treatability study, TAPPI JOURNAL, November 1994, Vol. 77(11)
Journal articles
Activated sludge treatment of tmp mill effluents part 2: biokinetic parameters and effluent treatment strategies, TAPPI JOURNAL, November 1994, Vol. 77(11)
Activated sludge treatment of tmp mill effluents part 2: biokinetic parameters and effluent treatment strategies, TAPPI JOURNAL, November 1994, Vol. 77(11)
Journal articles
Effect of printer roll-quality requirements on winding technology, TAPPI JOURNAL, October 1994, Vol. 77(10)
Effect of printer roll-quality requirements on winding technology, TAPPI JOURNAL, October 1994, Vol. 77(10)
Magazine articles
Dealing with localized corrosion of paper machine felt-roll journals, TAPPI JOURNAL, October 1994, Vol. 77(10)
Dealing with localized corrosion of paper machine felt-roll journals, TAPPI JOURNAL, October 1994, Vol. 77(10)
Journal articles
Accurate determination of six common fillers in fine papers, newsprint, and recycled stock by x-ray fluorescence spectrometry, TAPPI JOURNAL, April 1995, Vol. 78(4)
Accurate determination of six common fillers in fine papers, newsprint, and recycled stock by x-ray fluorescence spectrometry, TAPPI JOURNAL, April 1995, Vol. 78(4)
Journal articles
X-ray diffraction for quantifying calcium carbonate fillers in printing and writing papers, TAPPI JOURNAL, April 1995, Vol. 78(4)
X-ray diffraction for quantifying calcium carbonate fillers in printing and writing papers, TAPPI JOURNAL, April 1995, Vol. 78(4)
Journal articles
Magazine articles
Colloid chemical aspects of paper formation in the presence of nanofibrillated cellulose and cationic starch, TAPPI Journal September 2024
ABSTRACT: A series of experimental tests were carried out to examine colloidal-scale consequences of optionally treating nanofibrillated cellulose (NFC) with cationic starches of different charge density and dosage (0.5% or 2.0% by weight), adding that material to a furnish prepared from 100% recycled copy paper, and then subjecting the mixture to very different levels of hydrodynamic shear. Tests included optical microscopy, sediment volume tests, sediment velocity tests, and “percent fines” assessment by means of a fiber quality analyzer (FQA). In addition, the zeta potential and charge demand of the studied materials were evaluated. Optical imaging revealed that cationic starch treatment of the NFC tended to agglomerate it into multiparticle clusters, which sometimes could be mostly redispersed by hydrodynamic shear. Subsequent addition of the starch-treated NFC to the default furnish resulted in much of the colloidal material becoming attached to fibers. Subsequent shearing of the mixtures was at least partly effective in separating the clusters of NFC from the fiber surface, resulting in essentially a two-component mixture. Multiparticle NFC clusters coexisted with the fiber suspension, sometimes attached and sometimes not, depending on the details of treatments. Sediment volume tests showed that systems containing cationic starch-treated NFC tended to have a higher density after settling in comparison to untreated NFC; these findings are consistent with the cationic starch acting as a stabilizer on the solid surfaces, allowing them to slide past each other during the settling process. Application of intense hydrodynamic shear tended to result in denser sediment. Results of tests with the sediment velocity messurement and the FQA percent fines assessment did not correlate well with changes in test conditions considered in this study.