Analysis for Water Vapour Adsorption and Desorption Performance of Waste Paper-Mulberry according to Particle Size Control

In this study, adsorption and desorption characteristics of pulverized waste paper-mulberry pellet and bast fiber were measured to confirm the applicability to humidity control products. Paper-mulberry powder was classified by 710-355μm, 355-100μm, 100-45μm and less than 45μm and used in experiment. Specific surface area increased from 1.02m2/g to 1.35m2/g as the particle size decreased from 710μm to under 45μm. Adsorption and desorption performance decreased in the order of 355-100 μm, 710-355μm, 100-45μm, less than 45μm and bast fiber, adsorption content on each particle sizes were 141.1g/m2, 147.1g/m2, 135.7g/m2, 129.0g/m2 and desorption content were 117.2g/m2, 123.6g/m2, 110.2g/m2, 93.3g/m2. As a result, adsorption and desorption performance of paper-mulberry powder were superior to those of the bast fiber and these phenomenon can be considered that it caused by pore distribution in pellet and damage of fiber.