Acoustic Emission during the Tensile Straining of Paper from Hardwood Pulp

Bulky Paper from Chemically Crosslinked Hardwood Kraft Pulp Fibers

There is a general interest among paper and board makers to produce lighter and bulkier paper and board products. The aim of the present study was to characterize chemically crosslinked hardwood kraft fibers regarding their potential in making bulky paper and board. Crosslinking agents are molecules that contain two or more reactive ends that form inter-chain covalent bonds with cellulosic hydr...

Acoustic emission from crumpling paper.

From magnetic systems to the crust of the earth, many physical systems that exhibit a multiplicity of metastable states emit pulses with a broad power law distribution in energy. Digital audio recordings reveal that paper being crumpled, which can be easily held in hand, is such a system. Crumpling paper both using the traditional hand method and a cylindrical geometry uncovered a power law dis...

Effects of Heating, Drying and Straining on the Relaxation and Tensile Properties of Wet Paper

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Optimising CMC sorption in order to improve tensile stiffness of hardwood pulp sheets

Detailed Microstructural Evolutions of TWIP Steel During Tensile Straining: In situ SEM Observations

Microstructural evolutions of twinning induced plasticity (TWIP) steel during tensile straining were investigated by in situ SEM observations. The results indicated that slip lines and mechanical twins as well as surface relief were increased with increasing strain, resulting in a stepped surface. Additionally, these deformation mechanisms could change the shape of each grain via shear and rota...