Evolution of the crosslink structure in the elastomers NR and SBR

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An experimental positron annihilation lifetime spectroscopy (PALS), differential scanning calorimetry (DSC) and small angle X-ray scattering (SAXS) study of the effect of the advance of the crosslinking reaction on the free volume in a copolymer of styrene-butadiene and natural rubbers was carried o...

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Detalles Bibliográficos
Autores principales: Salgueiro, W., Somozaa, A., Marzocca, A.J., Consolati, G., Quasso, F.
Formato: JOUR
Materias:
Copolymers
Crosslinking
Differential scanning calorimetry
Positron annihilation spectroscopy
Rubber
X ray scattering
Crosslink density
Small angle X-ray scattering (SAXS)
Styrene-butadiene rubber (SBR)
Elastomers
1,3 butadiene
elastomer
rubber
styrene
sulfur
analytic method
article
cross linking
density
differential scanning calorimetry
physical chemistry
positron annihilation lifetime spectroscopy
reaction analysis
X ray crystallography
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0969806X_v76_n2_p142_Salgueiro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:An experimental positron annihilation lifetime spectroscopy (PALS), differential scanning calorimetry (DSC) and small angle X-ray scattering (SAXS) study of the effect of the advance of the crosslinking reaction on the free volume in a copolymer of styrene-butadiene and natural rubbers was carried out. The crosslink density developed in SBR specimens with different sulfur contents and cure temperatures was studied. SAXS technique was applied to study the process of crosslinking in NR as a function of the cure temperature. Finally, a study of different SBR/NR blends is presented using PALS and DSC. © 2006 Elsevier Ltd. All rights reserved.

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