IN-PLANE MOISTURE TRANSPORT IN PAPER DETECTED BY MAGNETIC RESONANCE IMAGING |
| |
Authors: | Johannes Leisen Barry Hojjatie Douglas W Coffin Haskell W Beckham |
| |
Affiliation: |
a Georgia Institute of Technology, School of Textile and Fiber Engineering, Atlanta, Georgia
b Institute of Paper Science and Technology, Atlanta, Georgia |
| |
Abstract: | Magnetic resonance imaging was used to visualize in-plane moisture transport in laboratory-made handsheets, heavy paperboard, and polyethylene-coated paperboard. Beginning with wet samples sealed on both surfaces, the moisture content was reduced through evaporation from the outside edges. The diffusion of moisture to the outside edges, i.e., in the plane of the sheets, was found to be isotropic with respect to the sample machine and cross directions. Isotropic in-plane moisture diffusion was observed for samples exhibiting a relatively high degree of fiber orientation, and under conditions of forced convection with air flow rates up to 10 L/min past the outside edges. |
| |
Keywords: | Anisotropy Fiber orientation In-Plane moisture diffusion Paper drying MRI (Magnetic resonance imaging) |
本文献已被 InformaWorld 等数据库收录! |
|