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A thermally stimulated discharge currents study of the molecular motions in two polysiloxane side-chain liquid crystalline polymers (1995)

Mano, João F. ; Correia, Natália T. ; Moura Ramos, Joaquim J. ; [et al.]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part B: Polymer Physics 33 (1995), S. 269-277

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ISSN: 0887-6266

Keywords: TSC ; TSDC ; thermally stimulated depolarization ; dielectric relaxation ; liquid crystal polymer ; LCP ; phase transition ; compensation ; Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: The technique of thermally stimulated depolarization currents was used to study the dipolar relaxation mechanisms in two side-chain liquid-crystalline polysiloxanes. The studied polymers have the same mesogenic side-group, but they differ in the number (or density) of side groups attached to the main chain. In both cases three different relaxations were observed: one in the vitreous state, one in the liquid crystalline phase, and the glass transition relaxation. The features of those thermally stimulated discharges are discussed and some suggestions are made concerning the attribution of those discharges at the molecular level. © 1995 John Wiley & Sons, Inc.

Additional Material: 13 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/polb.1995.090330212

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