Dynamic torsional unwinding of southern pine tracheids as observed in the scanning electron microscope

C.W. McMillin

Treesearch

Dynamic torsional unwinding of southern pine tracheids as observed in the scanning electron microscope

Informally Refereed

Authors:

C.W. McMillin

Year:

1974

Type:

Scientific Journal

Station:

Southern Research Station

Source:

Svensk Papperstidning 9(319-321

Download (PDF 1.68 MB)

Download (PDF 1.68 MB): https://research.fs.usda.gov/download/treesearch/8225.pdf

Abstract

In previous research on the process for making groundwood in a double-disk refiner, a theoretical stress analysis indicated that tracheids of Pinus taeda L. may fail while under torsional stress and unwind into ribbonlike elements. Such elements provide the coherence necessary for strength development in these pulps. Depending upon their physical state, tracheids may also buckle or shear and yield no ribbons.

Keywords

Mechanical pulps, hip groundwood, tracheids, cell structure, mechanical properties, southern pines, Pinus taeda

Citation

McMillin, C.W. 1974. Dynamic torsional unwinding of southern pine tracheids as observed in the scanning electron microscope. Svensk Papperstidning 9(319-321