CHARACTERIZATION OF LYOTROPIC LIQUID CRYSTALLINE PHASES BY TRANSMISSION-, AND SCANNING ELECTRON MICROSCOPY
Presented at the Second Croatian Symposium on Application of Electron Microscopy in Life Sciences and Material Science, Zagreb, October 4, 1996.

MIRNA GALEŠIĆ^a, ĐURĐICA TEŽAK^a,Author for correspondence MARIJAN TUDJA^b, NIKOLA LJUBEŠIĆ^c and VESNA BABIĆ-IVANČIĆ^c

^aUniversity of Zagreb, Faculty of Science, Department of Chemistry, Maruli\' cev trg 19, P.O.Box 163, HR-10001 Zagreb, Croatia
^bPliva, d.d., Osiguranje kvalitete d.d., B. Filipovi\' ca 25, 10000 Zagreb, Croatia
^cRudjer Bošković Institute, Bijenička cesta 54, P.O.Box 1016, 10001 Zagreb, Croatia

Received 4 November 1996
Revised manuscript received 10 February 1997

This paper is dedicated to Professor A. Bonefačić on the occasion of his 70^th birthday

The morphology of freshly prepared as well as of aged cadmium dodecylbenzenesulphonate precipitates showed significant differences between the crystalline and liquid crystalline samples, as shown by transmission-, and scanning electron microscopy at room temperature. Since water evaporated from the samples during the investigation, the remaining material from the liquid crystalline phase gave data on the shape and size of the aggregates. It was shown that electron microscopy at room temperature gives useful information on the lyotropic liquid crystalline phases, presuming the physical parameters were compared with some other techniques, such as X-ray diffraction and light microscopy using crossed polarizers.

UDC 538.911 531.714.5
PACS 61.30.Eb 61.43.Hv

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