The production technique and surface characteristics of a novel cellulosic substrate possessing a microcellular porous surface are presented. The specific spinning technique enables the production of material with high specific surface areas. In this study microcellular cellulosic foam structures were produced by dissolving cellulose from wood pulp in a solvent with a high surface tension (such as Dimethylacetamide with a surface tension of 33.8 dyne/cm) in the presence of 8% LiCl. The cellulosic solution was subsequently subjected to a high rate of shearing, followed by the addition of another solvent with a lower surface tension such as acetone, ethanol or isopropanol with surface tensions of 23.7, 22.8, and 21.7 dyne/cm respectively. During the solvent exchange process a highly porous surface was obtained with associated increases in the specific surface areas of the material produced. Characterization of the cellulosic foam thus produced including particle size and surface area were carried out using a scanning electron microscope. Experimental trials to optimize the production conditions as well as the properties of cellulosic solution to produce fibers with microcellular foam structures are discussed.