Correlation of Mechanical Properties of Polymer Composite Coatings with Viscosity of Unpolymerized System

Abstract

In order to provide good adhesion for natural nail coatings and to avoid loss of adhesion between the substrate and the coating, the mechanical properties of the coating should be close to those of the substrate. Three different mono-functional monomers (HPMA, THFA, THFMA) and one bi-functional monomer (EGDMA) have been added to decrease the viscosity of un-polymerized composition. Optimal monomer concentration was found evaluating monomer concentration effect on viscosity. Polymerized coatings were tested with monomer concentrations of 30% and 40%. The tensile strength properties of the polymerized coatings were determined 24 hours after polymerization. Polymerization T and conversion rate of unsaturated links were also studied to find the best monomer for natural nail coatings.

Improving the Corrosion Protection of Poly(phenylene methylene) Coatings by Side Chain Engineering: The Case of Methoxy-Substituted Copolymers

“…Intermolecular interactions within a polymer matrix have an impact on fundamental properties for coating materials such as glass transition temperature and mechanical stability of the coating [24,[27][28][29]. Polymer side-chain engineering allows the modulation of intermolecular interactions between polymer backbones, influencing van der Waals forces, material packing levels, and thermal transition temperatures [30][31][32].…”

“…Their corrosion protection performance was assessed for AA2024 aluminum alloy. The replacement of long chains (octyloxy pendants) with shorter ones (methoxy groups) is aimed at increasing the glass transition temperature but maintaining the filmforming properties of substituted PPM derivatives [24,27]. For this purpose, p-methoxy benzyl chloride was used as comonomer to benzyl chloride to synthesize a PPM derivative endowed with short methoxy side chains distributed along the polymer backbone.…”