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Butadiene rubbers: topological constraints and microscopic deformation by mechanical and small angle neutron scattering investigation

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons48409

Meier,  G.
MPI for Polymer Research, Max Planck Society;

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Menge, H., Pyckhout-Hintzen, W., Meier, G., & Straube, E. (2002). Butadiene rubbers: topological constraints and microscopic deformation by mechanical and small angle neutron scattering investigation. Polymer Bulletin, 48(2), 183-190.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-663A-7
Abstract
Results of stress-strain measurements are reported for butadiene rubbers of varying crosslink density. The fluctuation of the effective tube diameter of the polymer networks was investigated under uniaxial elongation by mechanical measurements as well as by small angle neutron scattering (SANS) which probe the local orientation on a segmental scale. The effect of topological constraints on the microscopic deformation of the butadiene network chains is well described within a tube approach. For the first time, experiments at large deformations and for polydisperse sample are presented. Excellent agreement between the statistical mechanical model and the experimental results is obtained.