Study of Hybrid Humic Acids Modification of Environmentally Safe Biodegradable Films Based on Hydroxypropyl Methyl Cellulose

Abstract

The possibility of increasing the strength and operational properties of ecologically safe biodegradable polymeric materials based on hydroxypropyl methyl cellulose by using its modification with the different types of humic acids (HAs) from lignite is considered. Hybrid ecologically safe high-strength films with antibacterial properties were obtained for the first time. Physicochemical studies and IR spectroscopy confirmed the development of hybrid structures of hydroxypropyl methyl cellulose, modified with the different types of HAs. Changes in water absorption, tensile strength, relative elongation at break, and time of mold appearance for the environmentally safe biodegradable polymeric materials based on hydroxypropyl methyl cellulose were revealed depending on the content of the different types of humic acids. It was also shown that the hybrid modification of hydroxypropyl methyl cellulose with the different types of HAs allows preserving the biodegradability of the films along with imparting the antibacterial properties. The developed ecologically safe biodegradable films with antibacterial properties based on hydroxypropyl methyl cellulose and HAs, in terms of their operational characteristics, are superior to the known similar biodegradable films based on natural biopolymers.

Carboxymethyl Cellulose-Blended Films from Rice Stubble as a New Potential Biopolymer Source to Reduce Agricultural Waste: A Mini Review

“…This hybrid modification allows the film to remain biodegradable while gaining antibacterial properties, outperforming similar films based on already known natural biopolymers 51 . The research carried out by Lebedev et al 3 explored the potential of a biodegradable hybrid film based on hydroxypropyl methylcellulose and humic acid which has not only high strength but also environmentally friendly antibacterial properties. Through physicochemical and IR spectroscopy studies, confirmation of the formation of the hybrid structure was achieved.…”

“…By combining CMC with biopolymers or nanomaterials, films with desired mechanical and technofunctional properties can be produced. Although biodegradable packaging is growing in popularity due to environmental concerns, economic challenges remain, and large trials are needed to gauge its applicability on a broader industrial scale 3 .…”

“…Natural or green polymers can be used to reduce the harmful and non-biodegradable substances produced daily by various industries. Among many different kinds of polymers, cellulose is one of the most common and easiest to obtain from the cell walls of plants 2,3 . When mixed with a variety of antibacterial polymers, cellulose materials, and their derivatives produce various composite films.…”

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“…The optimal amount of the modifier in this case is 1-3 wt. % [74][75][76][77][78][79][80][81][82][83][84][85] .…”