Synthesis of lignin nanoparticles employing acid precipitation method and its application to enhance the mechanical, UV-barrier and antioxidant properties of chitosan films.

Ramya, V. and Yamini, Sivaraman and Keshava Murthy, P. S. and Jeevan Prasad, Reddy Dandu (2022) Synthesis of lignin nanoparticles employing acid precipitation method and its application to enhance the mechanical, UV-barrier and antioxidant properties of chitosan films. International Journal of Polymer Analysis and Characterization, 27 (2). pp. 99-110.

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Abstract

Lignin nanoparticles were obtained by a simple acid precipitation method from lignin KOH alkali solution and used as a reinforcing agent to prepare chitosan based lignin nanoparticles nanocomposite films. The effect of lig�nin nanoparticles concentrations (3, 5, 10, 15 and 30% v/v chitosan solu�tion) on structural, mechanical, water vapor, ultra-violet light barrier, thermal and antioxidant properties of chitosan nanocomposite films was investigated. Particle size analysis reveals that the lignin nanoparticles are formed with an average size of 55 nm. The tensile strength and modulus were increased by 86 and 93%, respectively, in the presence of 15% of lig�nin nanoparticles compared to the values of chitosan film. The water vapor transmission rate of chitosan-lignin nanoparticles nanocomposite film reduced (32% for 15% LNPs) up to 15% concentrations. The ultraviolet barrier properties of the chitosan films were increased with an increase in the concentration of lignin nanoparticles. Lignin nanoparticles reinforced chitosan films were also significantly enhanced with antioxidant activity in comparison with neat chitosan film.

Item Type:	Article
Uncontrolled Keywords:	Food packaging; biopolymers; bio-nanocomposite films; chitosan; Lignin nanoparticles; UV-barrier
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 27 Polymer Chemistry 600 Technology > 08 Food technology > 06 Preservation and Storage > 06 Packaging
Divisions:	Food Packaging Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	13 Sep 2022 08:58
Last Modified:	13 Sep 2022 08:58
URI:	http://ir.cftri.res.in/id/eprint/15741

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