Studies on synthetic polymer plates with high surface energy. I. Diallyl phthalate‐unsaturated carboxylic acid system

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<jats:title>Abstract</jats:title><jats:p>A new preparation technique of the polymer plate with high water wettability and sufficient mar resistance was proposed. The gel plate resulting from the prepolymerization of diallyl compound (<jats:italic>M</jats:italic><jats:sub>1</jats:sub>), diallyl phthalate (DAP), in a casting cell was immersed in an aqueous solution of unsaturated carboxylic acid (<jats:italic>M</jats:italic><jats:sub>2</jats:sub>), acrylic acid (AA), and methacrylic acid (MAA), at a specific temperature for a specific time. <jats:italic>M</jats:italic><jats:sub>2</jats:sub> was copolymerized with the remaining <jats:italic>M</jats:italic><jats:sub>1</jats:sub> in the region near the surface of the gel plate, and polymer plates with the following characteristics were obtained: for DAP–AA system, <jats:italic>θ</jats:italic><jats:sub><jats:italic>i</jats:italic></jats:sub> (contact angle of the alkali‐treated plate) = 10.5° and mar resistance (for the alkali‐treated plate at a dry state) = 70 g; for DAP–MAA system, <jats:italic>θ</jats:italic><jats:sub>i</jats:sub> = 8.3°, and mar resistance = 65 g.</jats:p>

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