期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 93, 期 3, 页码 899-906出版社
SPRINGER
DOI: 10.1007/s10973-007-8583-9
关键词
calorimeter; nano-colloids; orientational order of liquid crystal; surface dynamics
This study explores the calorimetric analysis of an aligned nano-colloidal aerosil dispersed octyl-cyanobiphenyl gel. This system was prepared by solvent dispersion method (SDM). Heating scans were performed at different heating rates from 20 to 1 K min(-1) using DSC. Aligned samples follow Arrhenius behavior and showed a temperature shift in SmA-N and N-I transitions towards lower temperature. These samples show a decreased activated kinetics and an interesting relationship with their enthalpy. This behavior can be explained in terms of surface and molecular interaction between aerosil nano-particles and 8CB molecules and produced strain in the system.
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