Adhesion force approximation at varying consolidation stresses for fine powder under humid conditions

摘要: Abstract Interparticle adhesion forces in fine powders are greatly influenced by varying relative humidity (RH) conditions. The present study estimated the interparticle developed corn starch powder under humid conditions at applied consolidation stresses using tensile strength determination approach. Shear test was used to determine of 1–9 kPa pressures and extrapolated values zero stress were for force estimation non-consolidated powders. A strong dependence on RH observed, mainly due alteration number adhesive contacts contact area. results indicated that, low high RH, capillary is prevailing contributing total contrast higher where load induced plays a dominant role. Furthermore, nonconsolidated samples, registered steep jump above 60% which primarily attributed dominance liquid bridge forces. Also, determined from approach those predicted theoretically, as summation individual forces, yielded similar trend. Overall, simple effective consolidated well loosely packed presented here.