Advanced characterization of rubber compounds using a combination of experimental techniques

Autor: Salamanca, F. M., Zepeda Rodriguez, Z., González-Jiménez, Antonio, Herrero, R., Fernández Torres, Alberto, Navarro, Rodrigo, Valentín, Juan L.
Přispěvatelé: Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Ciencia e Innovación (España), Consejo Superior de Investigaciones Científicas (España), Consejo Nacional de Ciencia y Tecnología (México)
Rok vydání: 2022
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
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Popis: Elasticity in rubber materials depends on different molecular parameters that define the network structure. Crosslinks and entanglements have an effect that is already considered in different ways in the diverse rubber elasticity theories. Different experimental approaches to characterize those parameters are mechanical tests, swelling experiments and more recently double quantum nuclear magnetic resonance (1H DQ-NMR). The analysis of those experiments is based on different assumptions and theoretical approaches, reducing the consistence of the so-obtained results. The main purpose of this work is to unify for the first time those approaches in order to work under just one physical framework as independent as possible from the experiments. This will lead us to a new methodology for the analysis that allows to combine those experimental techniques for a better quantification of structural parameters as crosslink and entanglement density. Moreover, it could set the effect of other important parameters as network defects (dangling chain ends and loops) and spatial distribution of crosslinks (not considered in the rubber elasticity theories) in the physical properties of rubber materials.
Authors gratefully acknowledge the support given by Ministerio de Ciencia, Innovación y Universidades (RTI2018-096636-J-I00), Ministerio de Ciencia e Innovación (PID2020119047RB-I00 and PLEC2021-007793 and CSIC (201860E045). FMS acknowledge Ministerio de Ciencia e Innovación (CAM19_AI_ICTP_002). Elastomers group is part of the SusPlast platform, the interdisciplinary platform from the Spanish National Research Council (CSIC). ZZR acknowledge Consejo Nacional de Ciencia y Tecnología de México (CONACYT – México) for the postdoctoral grant given for the development of these projects
Databáze: OpenAIRE