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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.29 no.3-4 (2002), pp. 155-178
Positron Annihilation for Characterizing Polymeric Materials
R. López-Castañares1, O. Olea-Cardoso1, F. Vázquez-More1, B. Lizama-Soberanis1, E. Camps-Carvajal2, E. Angeles-Anguiano3, V. Castaño4
1Facultad de Química, UAEM. Paseo Colóny Paseo Tollocan Toluca, Estado de México 5000, México
2Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027. México D.F.11801, México
3FESC-UNAM, Cuautitlán-Izcalli, Estado de México, 50010, México
4Centro de Física Aplicada y Tecnología Avanzada UNAM. A.P. 1-1010. Querétaro, Querétaro, 76000, México
go back1Facultad de Química, UAEM. Paseo Colóny Paseo Tollocan Toluca, Estado de México 5000, México
2Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027. México D.F.11801, México
3FESC-UNAM, Cuautitlán-Izcalli, Estado de México, 50010, México
4Centro de Física Aplicada y Tecnología Avanzada UNAM. A.P. 1-1010. Querétaro, Querétaro, 76000, México
Abstract. Positron annihilation spectroscopy (PAS) is reviewed as a powerful technique for characterizing a number of materials, emphasizing the case of polymers. The basic physics of positronium, positron and their interactions with matter are discussed, as well as the equipment required for a PAS experiment. A specific example, namely the grafting of low density polyethylene (LDPE) with acrylic acid (AA) and metacrylic acid monomers is used to illustrate the use of PAS for characterizing complex polymeric systems.