@article { ISI:000242468700074,
	title = {Synthesis and characterization of cholesteric thermotropic liquid crystalline polyesters},
	journal = {Journal of Applied Polymer Science},
	volume = {103},
	number = {2},
	year = {2006},
	month = {JAN},
	pages = {1232-1237},
	publisher = {WILEY-BLACKWELL},
	type = {Article},
	address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA},
	abstract = {<p>Cholesteric liquid crystalline polyesters were successfully synthesized from isosorbide, methyl hydroquinone, and isophthaloyl chloride. Homo/copolyesters were synthesized by the solution polycondensation method, for which a mild organic base such as pyridine was employed. Inherent viscosities of polyesters P-3-P-5 were in the range of 0.31-0.39 dL/g at 25 degrees C in chloroform, and polyesters P-1 and P-2 were insoluble in chloroform. Homo/copolyesters based on isosorbide, methyl hydroquinone, and isophthalic acid had thermal stability at more than 300 degrees C on the basis of 10\% weight loss. The thermotropic liquid crystalline properties were examined by differential scanning calorimetry and polarizing optical microscopy. Wide-angle X-ray diffraction study demonstrated that polyesters P-1, P-2, and P-3 were semicrystalline, whereas the degree of crystallinity of polyesters P-4 and P-5 was less than 5\%. Copolyester P-4 showed formation of a yellow iridescent streak at 209 degrees C on heating and development of a Grand-jean texture at 270 degrees C on heating. These are typical textures of the cholesteric liquid crystalline phase. (c) 2006 Wiley Periodicals, Inc.</p>},
	keywords = {cholesteric liquid crystalline polymers (ChLCP), Differential scanning calorimetry (DSC), optical microscopy, solution polycondensation, Thermogravimetric analysis (TGA), viscosity},
	issn = {0021-8995},
	doi = {10.1002/app.24610},
	author = {Jadhav, Sushilkumar A. and Chougule, Rahul R. and Shinde, Yogesh A. and Chavan, Nayaku}
}
@article { ISI:000283759400011,
	title = {Polyethersulfone-expanded graphite nanocomposites: charge transport and impedance characteristics},
	journal = {Composites Science and Technology},
	volume = {70},
	number = {14},
	year = {2010},
	month = {NOV0},
	pages = {2111-2116},
	publisher = {ELSEVIER SCI LTD},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND},
	abstract = {<p>Polyethersulfone (PES)-expanded graphite nanocomposites have been prepared by solution blending route after sonicating expanded graphite in dichloromethane. It has been observed that ultrasonication results in nanosheets formation leading to a low percolation threshold of 3 wt.\%. At 5 wt.\% filler loading the conductivity is of the order of 10(-2) S/cm. Hopping type of charge transport occurs at 3.2 wt.\% expanded graphite in PES below which capacitive effects couple. The effective dielectric constant at low frequency increases with filler concentration. Impedance measurement has been carried out to evaluate interfacial capacitance which, for 3.2 wt.\% expanded graphite addition in PES, increases to 110 pF from 32 pF for 1 wt.\% expanded graphite in the polymer. DSC analysis shows an increment of 12 C in the T(g) of PES with 3 wt.\% expanded graphite suggesting interaction between the polymer and filler. (C) 2010 Elsevier Ltd. All rights reserved.</p>},
	keywords = {Differential scanning calorimetry (DSC), Electrical properties, Modeling, Polymers, Scanning/transmission electron microscopy (STEM)},
	issn = {0266-3538},
	doi = {10.1016/j.compscitech.2010.08.008},
	author = {Ramanujam, B. T. S. and Mahale, Rajashree Y. and Radhakrishnan, S.}
}
