Segmental Orientation in Deformed Rubbery Networks

Bahar, İvet; Erman, Burak

doi:10.1002/9783527615056.ch16

Cited by 1 publication

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This value corresponds to other experimental data from the literature. 16 However, it is an order of magnitude smaller than is the original value k ϭ 5 of Kuhn and Gruen, based on theoretical considerations of the network theory. Equation (5) was developed originally for freely joined chains without mutual interaction.…”

Section: Ftir Characterization Of the Basic Componentsmentioning

confidence: 99%

Characterization of the deformation behavior of dynamic vulcanizates by FTIR spectroscopy

Huy

Luepke

Radusch

2001

J. Appl. Polym. Sci.

View full text Add to dashboard Cite

To clarify the deformation mechanisms and to improve the mechanical properties of dynamic vulcanizates, we studied their deformation behavior by Fourier‐transform infrared (FTIR) spectroscopy. It was found that the orientation in the dispersed phase (EPDM phase) is higher than in the matrix (PP phase) upon loading. The orientation of the rubber phase increases continuously. In the thermoplastic phase, a change of the deformation mechanism takes place. With respect to the total strain of the material, the orientation in the thermoplastic phase of the dynamic vulcanizates is lower, and in the elastic phase, it is higher than the corresponding orientation of the pure components. During stress relaxation, there is an increase of the orientation in the crystalline PP phase. Simultaneously, a decrease of the orientation in the EPDM phase is observed. Upon unloading, the orientation recovery in the EPDM phase is always complete, while the orientation recovery in the PP phase is reversible only at low strains. The critical point, where the elastic deformation gets lost, corresponds to the minimum in the orientation function curve. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 148–158, 2001

show abstract

Section: Ftir Characterization Of the Basic Componentsmentioning

confidence: 99%