Molecular mobility and phase transitions in a liquid crystalline polymer studied by dielectric techniques

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Title

Molecular mobility and phase transitions in a liquid crystalline polymer studied by dielectric techniques (EN)

Creator

Georgoussis, G (EN)

Schoenhals, A (EN)

Barmatov, EB (EN)

Shibaev, VP (EN)

Pissis, P (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:15:43Z

2000 (EN)

Year

2000 (EN)

Description

The mechanisms of molecular mobility and of phase transitions in a thermotropic, comb-shaped, side-chain liquid crystalline polymer (LCP), poly-(epsilon -acryloyloxycaproyloxy-phenyl)-n-butoxybenzoate (PABB) were studied by dielectric techniques (dielectric relaxation spectroscopy, DRS, and thermally stimulated depolarization currents, TSDC). Two subglass secondary relaxations, beta and gamma, were observed in TSDC measurements, at about -100 and -150 degreesC, respectively. The beta relaxation, as well as, the alpha relaxation, associated to the glass transition, were studied by DRS. (EN)

Scientific field

Crystallography (EN)

Natural Sciences ▶ Chemical sciences
Crystallography (EN)

Subject

temperature derivative method (EN)

POLYMETHACRYLATES (EN)

dielectric relaxation (EN)

RELAXATION (EN)

thermally stimulated depolarization (EN)

comb-shaped LCP (EN)

Journal

MOLECULAR CRYSTALS AND LIQUID CRYSTALS (EN)