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Titolo:
Dielectric behaviour of polycarbonate/poly(styrene-co-acrylonitrile) and polycarbonate/poly(methyl methacrylate) two-phase blends
Autore:
Ilavsky, M; Sokol, R; Nedbal, J; Fahnrich, J; Kolarik, J;
Indirizzi:
Charles Univ, Fac Math & Phys, CR-18000 Prague 8, Czech Republic Charles Univ Prague Czech Republic 8 , CR-18000 Prague 8, Czech Republic Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague, Czech RepublicAcad Sci Czech Republ Prague Czech Republic CR-16206 gue, Czech Republic
Titolo Testata:
MACROMOLECULAR SYMPOSIA
, volume: 170, anno: 2001,
pagine: 79 - 89
SICI:
1022-1360(200106)170:<79:DBOPAP>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLY(METHYL METHACRYLATE); A POLYCARBONATE; BISPHENOL-A; MISCIBILITY; CONTINUITY; MOTIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Ilavsky, M Charles Univ, Fac Math & Phys, CR-18000 Prague 8, Czech Republic Charles Univ Prague Czech Republic 8 Prague 8, Czech Republic
Citazione:
M. Ilavsky et al., "Dielectric behaviour of polycarbonate/poly(styrene-co-acrylonitrile) and polycarbonate/poly(methyl methacrylate) two-phase blends", MACRO SYMP, 170, 2001, pp. 79-89

Abstract

Frequency and temperature dependencies of the complex permittivity epsilon* were investigated for two-phase blends polycarbonate/poly(styrene-co-acrylonitrile) (PC/SAN) and PC/poly(methyl methacrylate). The frequency dependencies of the epsilon* at all temperatures were described by the Havriliak-Negami (HN) equation and the conductivity contribution. The effect of mutualmiscibility on the HN shape parameters and temperature dependencies of thepeak frequences fm (at which loss component epsilon " attains its maximum value) is discussed. The Bottcher equation is used for describing the effect of the blend composition on the reduced dielectric strength Delta epsilonT, the dipole moment mu and epsilon* values measured at the highest temperatures (in the conductivity region). The role of Maxwell-Wagner-Sillars polarization due to interfaces between ordered and disordered domains in PC is mentioned.

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Documento generato il 09/07/20 alle ore 17:42:40