TY - CPAPER TI - Structural characterization of urethane/urea elastomers undoped and doped with magnetic nanoparticles by proton NMR relaxometry and X-ray diffraction PY - 2009 AU - Sena, Cleidilane Oliveira AU - Figueiredo Neto, Antônio Martins AU - Sebastião, P J AU - Godinho, M H T2 - Encontro Nacional de Física da Matéria Condensada J2 - Poster Session UR - http://www.sbf1.sbfisica.org.br/eventos/enfmc/xxxii/sys/resumos/R0387-1.pdf PP - São Paulo PB - SBF ER -