Dry Particle High-Impact Coating of Biopowders: Coating Strength

4th RELPOWFLO Symposium 2008, Tromso, NORWAY, JUN 10-12, 2008 International audience The aim of this study is to develop a fundamental knowledge on dry coating, to understand the coating strength of different bio-couples with a theoretical and experimental approach and how the dry coating is affecte...

Full description

Bibliographic Details
Published in:Particulate Science and Technology
Main Authors: Oetles, S., Lecoq, Olivier, Dodds, John A.
Other Authors: Centre de recherche d'Albi en génie des procédés des solides divisés, de l'énergie et de l'environnement (RAPSODEE), Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2009
Subjects:
adhesion
bio-powders
dry coating
Nara hybridizer
strength
van der Waals
[SPI]Engineering Sciences [physics]
Norway
Tromso
Online Access:https://hal.science/hal-01680762
https://hal.science/hal-01680762/document
https://hal.science/hal-01680762/file/Dry_Particle_High_Impact_Coating_of_Biopowders%20.pdf
https://doi.org/10.1080/02726350902993987
Description
Summary:4th RELPOWFLO Symposium 2008, Tromso, NORWAY, JUN 10-12, 2008 International audience The aim of this study is to develop a fundamental knowledge on dry coating, to understand the coating strength of different bio-couples with a theoretical and experimental approach and how the dry coating is affected by the size of host particle and choice of dry particle coating equipment. For this purpose, we examine the feasibility of dry coating of two different particle size distributions of Cellets particles with talc using a Nara Hybridizer NHS-0, a 1L Cyclomix, and a Turbula blender. Special care is required to choose suitable operating conditions in order to achieve surface modification without breakage phenomena. An experimental methodology based on a commercial granulometer is used to study the coating strength of the composites and allows us to study the influence of particle size. The conclusion is that the smaller the guest-to-host size ratio, the stronger the coating. This result is in agreement with the estimation of particle adhesion with the help of a van der Waals approach. The influence of the coating equipment is also studied. The Hybridizer leads with the chosen operating conditions to the stronger coating.

Similar Items