Homopolymer and copolymers of 4-nitro-3-methylphenyl methacrylate with glycidyl methacrylate: Synthesis, characterization, monomer reactivity ratios and thermal properties

作者：Vijayanand P S; Kato S; Satokawa S; Kojima T

来源：European Polymer Journal, 2007, 43(5): 2046-2056.

DOI：10.1016/j.eurpolymj.2007.01.042

• 4-nitro-3-methylphenyl methacrylate
• copolymerization
• H-1 NMR
• reactivity ratios
• glycidyl methacrylate
• thermal studies

The novel methacrylic monomer, 4-nitro-3-methylphenyl methacrylate (NMPM) was synthesized by reacting 4-nitro-3methylphenol dissolved in ethyl methyl ketone (EMK) with methacryloyl chloride in the presence of triethylamine as a catalyst. The homopolymer and copolymers of NMPM with glycidyl methacrylate having different compositions were synthesized by free radical polymerization in EMK solution at 70 +/- 1 degrees C using benzoyl peroxide as free radical initiator. The homopolymer and the copolymers were characterized by FT-IR, H-1 NMR and C-13 NMR spectroscopic techniques. The solubility tests were tested in various polar and non-polar solvents. The molecular weight and polydispersity indices of the copolymers were determined using gel permeation chromatography. The glass transition temperature of the copolymers increases with increase in NMPM content. The thermogravimetric analysis of the polymers performed in air showed that the thermal stability of the copolymer increases with NMPM content. The copolymer composition was determined using H-1 NMR spectra. The monomer reactivity ratios were determined by the application of conventional linearization methods such Fineman-Ross (r(1) = 1.862, r(2) = 0.88 1), Kelen-Tudos (r(1) = 1.712, r(2) = 0.893) and extended Kelen-Tudos methods (r(1) = 1.889, r2 = 0.884).

• 出版日期2007-5