Resumo

RUIZ, Juan Carlos; BUCIO, Emilio; ALIEV, Roustam  e  BURILLO, Guillermina. Radiation Grafting of 4-Vinylpyridine and N, N-Dimethylaminoethylmetha-Crylate from Binary Mixtures onto Polypropylene. Rev. Soc. Quím. Méx [online]. 2004, vol.48, n.3, pp.208-210. ISSN 0583-7693.

Radiation grafting of 4-vinylpyridine (4-VP) and N,N-dimethylaminoethylmethacrylate (DMAEMA) from binary mixtures in toluene solutions was carried out onto polypropylene (PP) films. The simultaneous γ-iradiation of PP and monomers solutions (direct method) at dose rate of 6 kGy/h and doses from 5 to 35 kGy was used. Dependences of grafting yield on dose and ratio of monomers concentration in solution were found. The grafted films were characterized with the FTIR-ATR spectroscopy. The grafted and ungrafted (in the presence or in the absence of PP) copolymers compositions were determined, and their dependence on compositions of the initial monomers nixtures were shown. Monomers reactivity ratios were calculated. These data indicate a random 4-VP and DMAEMA copolymerization.

Palavras-chave : 4-Vinylpyridine; N,N-Dimethylaminoethylmethacrylate; polypropylene; radiation grafting; copolymerization.

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