Abstract
On the basis of known nonlinearity of intermolecular force fields, we discuss the interpretation of PVT (pressure, volume, and temperature) behavior, pressure-temperature superposition for polymers, and the relationship between yield stress and tensile modulus. For PVT behavior of polymers, our theoretical results coincide with the experimental data, and their response to pressure is universal. The maximum theoretical yield strain, ϵy for glassy polymers is 1.08, and this value is beyond the elastic limit for glassy polymers. The previously established empirical relationship between yield stress, σy and tensile modulus, E: σy - 0.028 E, which again, is universal for glassy polymers, is predicted also by our phenomenological model. The theoretically predicted values of yield stress for glassy polymers range from 24 MPa to 84 MPa, coinciding with published experimental results. We discuss how the phenomenological model is helpful in the understanding of nonlinear viscoelasticity of glassy polymers © 1996 John Wiley & Sons, Inc.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
