Reference : Evidence for structural transformations in polymer melts
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/12335
Evidence for structural transformations in polymer melts
English
Krüger, Jan-Kristian mailto [Universität des Saarlandes]
Peetz, L. [Universität des Saarlandes]
Wildner, W. [Universität des Saarlandes]
Pietralla, M. [Universität Ulm]
2009
Polymer
Elsevier Science
21
6
620-626
Yes (verified by ORBilu)
International
0032-3861
Oxford
United Kingdom
[en] Crystallizing and non-crystallizing polymers have been investigated by Brillouin spectroscopy in the liquid state. The temperature gradient of the sound velocity of crystallizing polymers shows a discontinuity at ~60-110K above the melting transition. The non-crystallizing polymers investigated show no uniform behaviour. We interpret the phase between the melt temperature and the temperature of the additional transformation as a phase of locally nematic structure. This interpretation is also supported by a study of density, refractive index, viscosity and hypersonic attenuation.
http://hdl.handle.net/10993/12335
10.1016/0032-3861(80)90317-1
http://www.sciencedirect.com/science/article/B6TXW-48DY7KX-56/2/9c8b4d861eba29cadca05d9573856dc3

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