caa a22 4500 465814336 CHVBK 20180323112123.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF01376790 doi (NATIONALLICENCE)springer-10.1007/BF01376790 The relaxation of polymers with linear flexible chains of uniform length [Elektronische Daten] [M. Baumgaertel, A. Schausberger, H. Winter] The analysis of dynamic mechanical data indicates that linear flexible polymer chains of uniform length follow a scaling relation during their relaxation, having a linear viscoelastic relaxation spectrum of the formH(λ) = n 1 G N 0 × (λ/λ max) n1 forλ≤λ max. Data are well represented with a scaling exponent of about 0.22 for polystyrene and 0.42 for polybutadiene. The plateau modulusG N 0 is a material-specific constant and the longest relaxation time depends on the molecular weight in the expected way. At high frequencies, the scaling behavior is masked by the transition to the glassy response. Surprisingly, this transition seems to follow a Chambon-Winter spectrumH(λ) = Cλ−n2, which was previously adopted for describing other liquid/solid transitions. The analysis shows that the Rouse spectrum is most suitable for low molecular-weight polymersM ≈ M c , and that the de Gennes-Doi-Edwards spectrum clearly predicts terminal relaxation, but deviates from the observed behavior in the plateau region. Steinkopff, 1990 Relaxation spectrum nationallicence monodisperse polymers nationallicence scaling nationallicence glass transition nationallicence plateau modulus nationallicence recoverable compliance nationallicence Baumgaertel M. Department of Chemical Engineering, University of Massachusetts, 01003, Amherst, MA, USA aut Schausberger A. Physikalische Chemie, Johannes-Kepler-Universität, 4040, Linz, Austria aut Winter H. Department of Chemical Engineering, University of Massachusetts, 01003, Amherst, MA, USA aut Rheologica Acta Steinkopff-Verlag 29/5(1990-09-01), 400-408 0035-4511 29:5<400 1990 29 397 https://doi.org/10.1007/BF01376790 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01376790 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baumgaertel M. Department of Chemical Engineering, University of Massachusetts, 01003, Amherst, MA, USA aut NATIONALLICENCE 700 1- Schausberger A. Physikalische Chemie, Johannes-Kepler-Universität, 4040, Linz, Austria aut NATIONALLICENCE 700 1- Winter H. Department of Chemical Engineering, University of Massachusetts, 01003, Amherst, MA, USA aut NATIONALLICENCE 773 0- Rheologica Acta Steinkopff-Verlag 29/5(1990-09-01), 400-408 0035-4511 29:5<400 1990 29 397 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer