Evidence for structural transformations in polymer melts

Reference : Evidence for structural transformations in polymer melts


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/12335

Title :	Evidence for structural transformations in polymer melts
Language :	English
Author, co-author :	Krüger, Jan-Kristian [Universität des Saarlandes]
	Peetz, L. [Universität des Saarlandes]
	Wildner, W. [Universität des Saarlandes]
	Pietralla, M. [Universität Ulm]
Publication date :	2009
Journal title :	Polymer
Publisher :	Elsevier Science
Volume :	21
Issue/season :	6
Pages :	620-626
Peer reviewed :	Yes (verified by ORBi^lu)
Audience :	International
ISSN :	0032-3861
City :	Oxford
Country :	United Kingdom
Abstract :	[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.
Permalink :	http://hdl.handle.net/10993/12335
DOI :	10.1016/0032-3861(80)90317-1
Other URL :	http://www.sciencedirect.com/science/article/B6TXW-48DY7KX-56/2/9c8b4d861eba29cadca05d9573856dc3

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