Acidic hydrophobic nanosilica particle-induced mechanical dissipation and adhesion promotion of acrylate-based photopolymeric nanocoatings

作者：Yazdani Ahmadabadi Hossein; Rastegar Saeed^*; Ranjbar Zahra

来源：Progress in Organic Coatings, 2016, 100: 173-177.

DOI：10.1016/j.porgcoat.2016.05.004

• Photopolymeric nanocoatings
• Surface acidity nature
• Mechanical dissipation
• Structural heterogeneity
• Adhesion promotion

In this paper, some photopolymeric nanocoatings with various contents of the hydrophobic nanosilica were prepared to be chosen for the morphological assessments and the mechanical dissipation behavior. When the nanosilica content was increased, both the glass transition temperature and the cross-link density of the coating decreased. It showed that the photopolymerization-induced structurally heterogeneous domains formation like microgel domain was reduced with addition of the nanosilica particles. The mechanical dissipation nature and the adhesion energy of the nanocoatings were determined to be higher than that of the coating without the nanosilica. This corresponded to the reduction of the internal stress caused by the photo-cure shrinkage because of the surface acidity nature of the nanosilica particles.

• 出版日期2016-11