Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/34254
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Title

Measurements of freezing-point depression to evaluate rubber network structure. Crosslinking of natural rubber with dicumyl peroxide

AuthorsValentín, Juan L. ; Fernández-Torres, Alberto CSIC; Posadas, P.; Marcos-Fernández, Ángel CSIC ORCID CVN ; Rodríguez Díaz, Andrés; González Hernández, Luis
KeywordsFreezing point depression
Networks
Rubber
Vulcanization
Issue Date1-Mar-2007
PublisherWiley-Blackwell
CitationJournal of Polymer Science Part B: Polymer Physics 45(5): 544-556 (2007)
AbstractAn experimental approach based on the freezing-point depression of a solvent in a swollen gel has been developed to characterize the structure of rubber networks. This property depends on the conditions required for the formation of crystalline nuclei, which are limited by the elastomer network restrictions. Information about the functionality, spatial distribution, and number of crosslinks can be obtained by the use of this easy and ready experimental method. Application of the tube model of rubber elasticity in the uniaxial stress–strain experiments of natural rubber samples vulcanized with dicumyl peroxide yields the characteristic parameters of the rubber networks, which are in concordance with the network structures predicted by the freezing point method. Finally influence of vulcanization conditions in network structure and its relationship with the mechanical properties was evaluated.
Description13 páginas, 11 figuras, 4 tablas.
Publisher version (URL)http://dx.doi.org/10.1002/polb.21060
URIhttp://hdl.handle.net/10261/34254
DOI10.1002/polb.21060
ISSN0887-6266
Appears in Collections:(ICTP) Artículos

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