Photolytic synthesis and hydrophobization of plates of porous polymer material based on dimethacrylate oligomer MDP-2

• Published in: Russian chemical bulletin 2019-09, Vol.68 (9), p.1741-1747
• Main Authors: Lenshina, N. A., Arsenyev, M. V., Baten’kin, M. A., Chesnokov, S. A.
• Format: Article
• Language: English
• Subjects: ABUNDANCE; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Contact angle; COPOLYMERIZATION; DROPLETS; Full Articles; Graft copolymers; GRAFTS; HYDROGEN 1; Inhomogeneity; Inorganic Chemistry; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; IRRADIATION; Light irradiation; METHACRYLATES; Organic Chemistry; Photopolymerization; Plates; POLYMERS; POROUS MATERIALS; SYNTHESIS; Water drops
• ISSN: 1066-5285; 1573-9171
• DOI: 10.1007/s11172-019-2619-8

Plates of poly-MDP-2 porous material with a characteristic size of inhomogeneities of 0.3, 0.7, 2.5, 10, and 20 µm were synthesized by the photopolymerization technique. The conditions for the photolytic modification of the hydrophilic/hydrophobic properties of poly-MDP-2 by the graft copolymerization method under visible light irradiation were selected using 9,10-phenanthrenequinone as a photoinitiator and isodecyl methacrylate as a modifying monomer. It is shown on the samples with an inhomogeneity size of 10 µm that the stable hydrophobization effect (contact angle of water droplet θ = 135°) is achieved at a photoinitiator concentration of 2.4 · 10 −3 mol L −1 and an irradiation time of the sample in the modifying solution of 1 h. The effect of photolytic hydrophobization increases with an increase in the size of inhomogeneities in the porous polymer material and reaches θ = 140° for inhomogeneities ∼20 µm in size.