Binary copolymerizations of 8-methacryloxy-quinoline with methyl methacrylate, methyl acrylate, styrene and acrylonitrile

Autor:	A. A. Mahmoud, Sabrnal Hanafy El Hamouly, Mostafa Ali Mosalam, Ahemad Abdel Salam Khalil
Rok vydání:	2011
Předmět:	Materials science Polymers and Plastics Organic Chemistry Azobisisobutyronitrile Methacryloyl chloride chemistry.chemical_compound Monomer chemistry Methacrylic acid Polymer chemistry Materials Chemistry Copolymer Methyl methacrylate Acrylonitrile Methyl acrylate
Zdroj:	Journal of Polymer Research. 18:2141-2150
ISSN:	1572-8935 1022-9760
DOI:	10.1007/s10965-011-9624-4
Popis:	8-methacryloxy-quinoline monomer (MAQ) was prepared by the reaction of 8-hydroxyquinoline with either methacryloyl chloride or methacrylic acid in the presence of triethylamine and N, N′-dicyclohexylcarbodiimide, respectively. Its structure was confirmed by IR and 1 H-NMR spectroscopy. Binary copolymerization of this new monomer with methyl acrylate (MA), acrylonitrile (AN) methyl methacrylate (MMA), styrene(ST), were performed in Dimethylformamide, using 1 mol% azobisisobutyronitrile as initiator at 65 °C. The copolymer compositions were determined from nitrogen analysis except MAQ-AN with 1 H-NMR. Copolymerization Parameters for each system were calculated by both the Finemen-Ross and Kelen-Tudos methods. The monomer reactivity ratios for the systems MAQ-MA, MAQ-AN, MAQ-MMA and MAQ-ST were found to be r1 = 0.695 ± 0.036, r2 = 0.62 ± 0.235; r1 = 0.273 ± 0.087, r2 = 0.259 ± 0.67; r1 = 0.356 ± 0.015, r2 = 1.615 ± 0.052 and r1 = 0.097 ± 0.003, r2 = 0.339 ± 0.027 respectively. The Q and e values for MAQ monomer were found to be 1.62 and 1.40.
Databáze:	OpenAIRE
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