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Article | REF: J2253 V1

Implementation of powders - Humid granulation: bases and theory

Authors: Khashayar SALEH, Pierre GUIGON

Publication date: September 10, 2009, Review date: December 1, 2022

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3. Spreading a liquid over a solid surface

When deposited on a solid surface, a liquid drop deforms and spreads out [11] . This phenomenon continues as long as the variation in the system's energy is favorable to spreading. This variation in energy is represented by the spreading parameter, which expresses the difference between the surface energy (or tension) of the dry and wetted substrate:

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