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Discrete element method to predict the mechanical properties of pigmented coatings

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Abstract

The mechanical properties of pigmented coating layers are important in a variety of applications. However, the large number of parameters that influence these properties as well as the numerous types of deformations challenge the prediction of the performance of these systems. A discrete element method (DEM) is proposed to predict the mechanical properties of paper coating layers that have a range of starch and latex content. The model is developed in both 2D and 3D and is adapted to tensile and flexural deformations. The model predictions are compared to experimental results in the literature. The predictions are generally good for the moduli and the strain at failure of the systems, but underpredict the maximum stress. This result may be caused by the complex particle size distribution of the experimental systems or by the impact of the brittleness of the starch when making the freestanding films.

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Acknowledgments

We like to thank the sponsors of the University of Maine Paper Surface Science Program for their discussions and support.

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Authors and Affiliations

  1. OMYA Inc., Proctor, VT, 05765, USA

    Dan Varney

  2. Laboratory of Paper Coating and Converting, Åbo Akademi University, Turku, Finland

    Martti Toivakka

  3. Paper Surface Science Program, Department of Chemical and Biomedical Engineering, University of Maine, Orono, ME, 04469, USA

    Dan Varney & Doug Bousfield

Authors
  1. Dan Varney
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  2. Martti Toivakka
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  3. Doug Bousfield
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Correspondence to Doug Bousfield.

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Varney, D., Toivakka, M. & Bousfield, D. Discrete element method to predict the mechanical properties of pigmented coatings. J Coat Technol Res 16, 1683–1689 (2019). https://doi.org/10.1007/s11998-019-00255-w

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