Properties in aqueous solution of homo- and copolymers of vinylphosphonic acid derivatives obtained by UV-curing

• Published in: Macromolecular research Vol. 25; no. 3; pp. 214 - 221
• Main Authors: Macarie, Lavinia, Pekar, Miloslav, Simulescu, Vasile, Plesu, Nicoleta, Iliescu, Smaranda, Ilia, Gheorghe, Tara-Lunga-Mihali, Milica
• Format: Journal Article
• Language: English
• Published: Seoul The Polymer Society of Korea 01.03.2017; Springer Nature B.V; 한국고분자학회
• Subjects: Aqueous solutions; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Copolymers; Infrared spectroscopy; Light scattering; Nanochemistry; Nanotechnology; Physical Chemistry; Polymer Sciences; Soft and Granular Matter; Thermal stability; 고분자공학; copolymers; poly(vinylphosphonic acid); anticorrosion; SEC-MALLS; electrochemical impedance
• ISSN: 1598-5032; 2092-7673
• DOI: 10.1007/s13233-017-5026-8

Vinylphosphonic acid is homopolymerized with dimethylvinylphosphonate by radical polymerization using using UV light and photoinitiator Darocur 4265 (3 wt%). The molar ratio between vinylphosphonic acid and dimethylvinylphosphonate is varied between 1:1 and 4:1, respectively. The obtained homopolymer of vinylphosphonic acid and copolymers are characterized by Fourier transform infrared spectroscopy (FTIR), thermal analysis and size exclusion chromatography - multi angle laser light scattering. The polymerization by UV light is efficient and an average molar mass of 34,200 g/mol is obtained for poly(vinylphosphonic acid) and in the range from 12,700 to 19,120 g/mol for copolymers, which also have a good thermal stability until 320 °C. The polymers structure allows the formation of random coil conformation. The copolymers are tested as inhibitors against corrosion of iron in NaCl aqueous solution, and, as a result, it was shown that these copolymers exhibit promising anticorrosion properties.