@article { ISI:000238928100018,
	title = {Preparation and characterization of novel hybrid of chitosan-g-lactic acid and montmorillonite},
	journal = {Journal of Biomedical Materials Research Part A},
	volume = {78A},
	number = {2},
	year = {2006},
	month = {AUG},
	pages = {372-382},
	publisher = {WILEY-LISS},
	type = {Article},
	address = {DIV JOHN WILEY \& SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA},
	abstract = {<p>The utilization of biopolymers and the development of organic-inorganic hybrids are ever increasing interest of material science researchers around the globe for various applications. The present attempt is intended to prepare nanocomposites of lactic acid grafted chitosan and layered silicates. Nanocomposites were prepared by dissolving chitosan and dispersing sodium montmorillonite in aqueous solution of L-lactic acid with subsequent heating and film casting. They were characterized by conventional techniques such as Fourier transform infrared spectroscopy, X-ray diffractometry, thermogravimetric analysis, energy dispersive X-ray spectroscopy, and elemental analysis. The results from polar optical and transmission electron microscopic measurements are also discussed. Sorption behavior of samples has been followed by measuring swelling degree and contact angle. The films have shown enhanced hydrophilicity when compared with polylactic acid (PLA). Issues on the interactions of polycationic chitosan with clay are also discussed. It is observed that nanocomposites are exhibiting better thermal and physical properties than neat chitosang-LA and PLA. (c) 2006 Wiley Periodicals, Inc.</p>},
	keywords = {Chitosan, contact angle, graft copolymerization, Nanocomposites, polylactic acid, water absorption},
	issn = {1549-3296},
	doi = {10.1002/jbm.a.30738},
	author = {Depan, Dilip and Kumar, Annamalai Pratheep and Singh, Raj Pal}
}
@article { ISI:000282471100001,
	title = {Enhancement of thermal stability and phase relaxation behavior of chitosan dissolved in aqueous l-lactic acid: using {\textquoteleft}silver nanoparticles{\textquoteright} as nano filler},
	journal = {Macromolecular Research},
	volume = {18},
	number = {8},
	year = {2010},
	month = {AUG},
	pages = {713-720},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>Chitosan films with various compositions of silver nanoparticles were prepared by solution casting with an aqueous solution of chitosan and l-lactic acid. The chitosan/Ag nanocomposites were characterized by wide angle Xray diffraction (WAXD) and UV-vis spectroscopy. An analysis of the surface topography and size of the Ag nanoparticles (\&lt;= 100 nm) were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. Thermogravimetric analysis (TGA/DTA) confirmed the increase in thermal stability with increasing Ag nanoparticle content in the nanocomposites. Dynamic thermal analysis (DMA) was used to examine the phase relaxation behavior of chitosan and its nanocomposites. The conductivity of chitosan/Ag nanocomposites was considered with respect to the frequency. Contact angle measurements were used to characterize the surface twistability, surface cleanliness, and hydrophilic/hydrophobic nature of the surface.</p>},
	keywords = {Chitosan, conductivity, contact angle, relaxation, silver nanoparticles},
	issn = {1598-5032},
	doi = {10.1007/s13233-010-0801-9},
	author = {Rana, V. K. and Pandey, Asutosh K. and Singh, Raj Pal and Kumar, B. and Mishra, Satyendra and Ha, Chang-Sik}
}
