Study of the Foaming Kinetics in Epoxidized Natural Rubber Foams Crosslinked by Electron Beam Irradiation
Corresponding Author
Leandra Oliveira Salmazo
Cellular Materials Laboratory, Condensed Matter Physics Department, University of Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
E-mail: [email protected]Search for more papers by this authorAlberto Lopéz-Gil
CellMat Technologies S.L., Paseo de Belén 9-A, 47011 Valladolid, Spain
Search for more papers by this authorZulkifli Mohamad Ariff
School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Search for more papers by this authorMaria Luz Rodriguez-Mendez
Group UVaSens, Department of Inorganic Chemistry, Escuela de Ingenierías Industriales, Universidad de Valladolid, CP: 47011 Valladolid, Spain
Search for more papers by this authorAldo Eloizo Job
Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista, Rua Roberto Simonsen, 305, CEP 19060-900, Presidente Prudente, São Paulo, Brazil
Search for more papers by this authorMiguel Angel Rodriguez-Perez
Cellular Materials Laboratory, Condensed Matter Physics Department, University of Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
Search for more papers by this authorCorresponding Author
Leandra Oliveira Salmazo
Cellular Materials Laboratory, Condensed Matter Physics Department, University of Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
E-mail: [email protected]Search for more papers by this authorAlberto Lopéz-Gil
CellMat Technologies S.L., Paseo de Belén 9-A, 47011 Valladolid, Spain
Search for more papers by this authorZulkifli Mohamad Ariff
School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Search for more papers by this authorMaria Luz Rodriguez-Mendez
Group UVaSens, Department of Inorganic Chemistry, Escuela de Ingenierías Industriales, Universidad de Valladolid, CP: 47011 Valladolid, Spain
Search for more papers by this authorAldo Eloizo Job
Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista, Rua Roberto Simonsen, 305, CEP 19060-900, Presidente Prudente, São Paulo, Brazil
Search for more papers by this authorMiguel Angel Rodriguez-Perez
Cellular Materials Laboratory, Condensed Matter Physics Department, University of Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
Search for more papers by this authorAbstract
This work focuses on studying natural rubber (NR) and epoxidized natural rubber (ENR) foams crosslinked at different absorbed doses and foamed using a chemical blowing agent. The aim is to study if the existence of epoxide groups within the natural rubber molecular structure influences the expansion capacity and the cellular structure morphology of these types of foam. This is accomplished by studying the foaming kinetics, that is, by quantifying the evolution of density and cellular structure parameters, such as cell size and cell density, as a function of foaming time. The results show that ENR foams exhibit higher cell nucleation rates and less intense cell degeneration than NR ones, which is because the presence of epoxide groups allows the polymer to reach higher crosslinking levels. Consequently, ENR foams present more homogeneous cellular structures and lower cell sizes.
Conflict of Interest
The authors declare no conflict of interest.
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