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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/2482

Title: Copolymerization of methyl methacrylate and urethane methacrylate—II
Authors: Tyagi, Alok Kumar
Choudhary, Veena
Varma, I K
Keywords: Photopolymerization
Copolymer compositions
Issue Date: 1992
Citation: European Polymer Journal,28(4), 423-425
Abstract: A methacrylate monomer (MAUN) having a pendant urethane linkage was prepared by reacting tolylene diisocyanate (TDI), 2-naphthol and 2-hydroxyethyl methacrylate (HEMA). Photopolymerization in the absence of photosensitizer in the temperature range 32 to 62° was investigated using differential photocalorimetry. The activation energy for photopolymerization was found to be 20.4 kJ/mol. Homopolymerization and copolymerizations of MAUN with MMA were also carried out in tetrahydrofuran at 60° using benzoyl peroxide as initiator. The reactivity ratios determined from copolymer compositions derived from nitrogen contents were 0.2 ± 0.1 (MMA) and 5.6 ± 0.3 (MAUN) indicating that the copolymer was enriched in MAUN relative to the feed. The effect of copolymer composition on thermal stability in nitrogen was also evaluated.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/2482
Appears in Collections:Centre for Polymer Science and Engineering [CPSE]

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