Liquid crystal polymers dielectric spectroscopy

Dielectric relaxation spectroscopy is widely used to study molecular dynamics of conventional and liquid crystal polymers. Since the mesogenic groups of a side-chain liquid crystal polymer contain strong permanent dipoles, the technique may be utilized to study the reorientation and, as Attard et have shown, the level of... [Pg.139]

Main chain/side chain liquid crystal polymers investigated by dielectric relaxation spectroscopy... [Pg.225]

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Lucchetta DE, Criante L, Francescangeli O, Simraii E (2004) light amplification by dye-doped holographic polymer dispersed liquid crystals. Appl Phys Lett 84 4893-4895 Lvovich VF (2012) bnpedance spectroscopy applications to electrochcamcal and dielectric phenomena. Wiley, New Jersey... [Pg.193]

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Shenhar R, Norsten TB, Rotello VM (2005) Polymer-mediated nanoparticle assembly structural control and applications. Adv Mater 17(6) 657-669 Sinha G, Glorieux C, Thoen J (2004) Broadband dielectric spectroscopy study of molecular dynamics in the glass-forming liquid crystal isopentylcyanobiphenyl dispersed with aerosils. Phys Rev E 69 031707-031712... [Pg.386]

It is evident from these studies that dielectric relaxation spectroscopy provides a direct and unambiguous method for studying the molecular dynamics and alignnient properties of liquid crystalline side chain polymers. It has the distinct advantage over the NMR, ESR and DSC methods that a wide frequency range (10 to 10 Hz) can be covered at each temperature in the liquid crystal, biphasic and isotropic ranges of these anisotropic materials. [Pg.628]

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