Scanning Microscopy


Supercalendered and coated papers (SC and LWC) were examined using an environmental scanning electron microscope (ESEM). Moderate structural surface changes were observed as water condensed on the surface in a high moisture environment. The changes were fully or partially reversible depending on the sample origin. A wide range of contact angles could be observed when condensing water on uncoated wood fibers. While there was no visible indication of irradiation damage on the commercial paper samples examined nor on mechanical pulp fibers, attempts to look at chemical pulp fibers during wetting to examine fiber swelling were unsuccessful because of very rapid irradiation damage.

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