@article { ISI:000287466900022,
	title = {Effect of tethering on the structure-property relationship of TPU-dual modified laponite clay nanocomposites prepared by ex-situ and in-situ techniques},
	journal = {Polymer},
	volume = {52},
	number = {4},
	year = {2011},
	month = {FEB},
	pages = {1071-1083},
	publisher = {ELSEVIER SCI LTD},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND},
	abstract = {<p>Novel Thermoplastic Polyurethane (TPU)-dual modified Laponite clay nanocomposites were prepared by ex-situ and in-situ techniques. Two types of modified clays used in this work differ from each other by the number of active functional groups (tethering). Modified nanoclays are characterized by FTIR, Solid State NMR, XRD and TGA. Structural differences in the modified clays lead to novel tubular, elliptical and spherically aggregated morphologies of clays together with the hard segments of TPU. Changes in such morphology result in the difference in segmental relaxation, mechanical and rheological properties of the nanocomposites. In-situ prepared nanocomposites register inferior properties as compared to their ex-situ counterparts. The percent improvement in tensile strength and elongation at break of the ex-situ prepared nanocomposites with the modified clay having lesser tethering are found to be 67\% and 208\%, respectively. Thermal stability is enhanced by 35 degrees C as compared to that of the neat TPU. (C) 2010 Published by Elsevier Ltd.</p>},
	keywords = {Dual modification, Nanocomposites, Thermoplastic polyurethane},
	issn = {0032-3861},
	doi = {10.1016/j.polymer.2010.10.010},
	author = {Mishra, Ananta K. and Chattopadhyay, Santanu and Rajamohanan, P. R. and Nando, Golok B.}
}
@article { ISI:000288835000010,
	title = {Structure-property of thermoplastic polyurethane-clay nanocomposite based on covalent and dual-modified laponite},
	journal = {Journal of Computational and Theoretical Nanoscience},
	volume = {4},
	number = {1},
	year = {2011},
	month = {JAN},
	pages = {65-73},
	publisher = {AMER SCIENTIFIC PUBLISHERS},
	address = {26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA},
	abstract = {<p>Modification of surface of clay platelets by ionic and covalent modification techniques renders it to be easily dispersed in polymers like, Thermoplastic Polyurethane (TPU). Only ionic or covalent modification techniques in isolation are not sufficient to achieve uniform nanoscale dispersion of Laponite (synthetic hectorite nanoclay) in TPU. Hence, the dual modification of Laponite (both ionic and covalent) is performed and the effects of the modification on the morphology, thermal and rheological behaviors of the TPU-modified clay nanocomposites have been studied. The degree of exfoliation of clay platelet in TPU matrix is found to be higher for dual functionalized nanoclays compared to their singly modified counterparts. Interestingly, dual modified Laponite clays prepared by using two different techniques (ionic followed by covalent and covalent followed by ionic) exhibit different morphology and properties. The dual modified clays significantly alter the equilibrium morphology of TPU. The storage modulus of the dual modified Laponite-TPU nanocomposite in the glassy region (at -60 degrees C) land in the rubbery region (+98 degrees C) is improved by 172.8\% and 85\%, respectively as compared to the neat TPU. Similarly, the onset of degradation is found to be enhanced by 28.7 degrees C as compared to the neat TPU.</p>},
	keywords = {Dual modification, Laponite Nanocomposite, Morphology, Structure-Property, Thermoplastic polyurethane},
	issn = {1936-6612},
	doi = {10.1166/asl.2011.1174},
	author = {Mishra, Ananta K. and Rajamohanan, P. R. and Nando, Golok B. and Chattopadhyay, Santanu}
}
@article {43644,
	title = {PVAc/PEDOT:PSS/graphene-iron oxide nanocomposite (GINC): an efficient thermoelectric material},
	journal = {RSC Advances},
	volume = {6},
	year = {2016},
	month = {FEB},
	pages = {22453-22460},
	abstract = {A green method for the synthesis of a graphene-iron oxide nanocomposite (GINC) and its PVAc based polymer nanocomposites was reported in an earlier communication. The fabricated PVAc-GINC film exhibited a conductivity of 2.18 x 104 S m(-1) with a Seebeck coefficient of 38.8 mu V K-1. Hence, the power factor (PF) reached a value of 32.90 mu W m(-1) K-2 which is 27 fold higher than a thermoelectric material based on a PVAc-graphene composite as reported in the contemporary literature. In continuation of the above mentioned study, PEDOT:PSS was used to further enhance the power factor (PT) and figure of merit (ZT) of the system. During evaluation, a PEDOT: PSS/GINC composite (5 : 95) showed a remarkable increase in various thermoelectric properties like electrical conductivity (8.0 x 10(4) S m(-1)) with a Seebeck coefficient of 25.42 mu V K-1 and thermal conductivity 0.90 m(-1) K-1. Hence PF and ZT reach up to 51.93 mW m(-1) K-2 and 0.017, respectively. To improve the mechanical strength of the polymer composite, cellulose fibre was also employed. By the addition of cellulose fibre, though the mechanical strength of the composite increases the PF reaches 5.6, which is 10 times lower than the PEDOT:PSS/GINC composite.},
	doi = {10.1039/c5ra26138d},
	author = {Dey, Abhijit and Maity, Arunava and Khan, Md Abdul Shafeeuulla and Sikder, Arun Kanti and Chattopadhyay, Santanu}
}
