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Self-Healing Latex Containing Polyelectrolyte Multilayers
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DOI：10.1002/mame.201700596.png)
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摘要
En 中文
Self-healing paints would have the potential benefit of protecting the underlying substrate and extending the coating's service life. As a step toward those types of coatings, this work examines layer-by-layer films of branched poly(ethylene imine)/poly(acrylic acid) with the inclusion of various types of latex particles with different T-g and different compositions. Due to high mobility of the polyelectrolyte chains when plasticized with water, water enabled self-healing of these films is demonstrated, as well as steam enabled self-healing. The films with various latex particles show different swelling ratios, surface hydrophilicity, as well as varying ability to self-heal scratches. This self-healing property is studied as a function of temperature. Also, the mechanical properties such as hardness and modulus of the films are measured.
Keyword:
latex coatings
polyelectrolytes
self-healing
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