Molar mass and molar mass distribution in a nematic azobenzene polymethacrylate: Effect on optical recording

L. Andreozzi, M. Faetti, M. Giordano, D. Palazzuoli, M. Laus, G. Galli

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

The mass contents in five samples of a nematic azobenzene polymethacrylate having different molar masses and molar mass distributions were evaluated starting from either Logarithmic Normal (LN) or Zimm-Schulz (ZS) distribution functions. Reliability of these two approaches was verified by comparing the experimental Tg with those predicted (Fox-Flory) on the basis of the LN and ZS mass contents. A. birefringent bit was induced in the various samples, and its stability on time was monitored at constant temperature. The optical bit was found to be quite stable at temperatures below that at which conformational disorder was frozen in the nematic phase.

Lingua originaleInglese
pagine (da-a)97-106
Numero di pagine10
RivistaMolecular Crystals and Liquid Crystals
Volume398
DOI
Stato di pubblicazionePubblicato - 2003

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