Abstract
The research to establish the influence of different organic plasticizers on the properties of biodegradable films was done. The most widespread, relatively inexpensive plasticizers were chosen that were added to the film based on corn starch or modified starch and gelatin. The complex organoleptic indicator of quality is calculated that is the highest in such plasticizers as glycerin and sorbitol; films with glucose, sucrose and fructose as plasticizers have a lower index; films with urea have the lowest index. The changes in tensile strength and elongation depending on the plasticizer are calculated. The obtained results can be explained by properties of organic compounds used as plasticizers. IR Spectroscopy was used to determine that carbohydrates (fructose, glucose, sucrose) and polyhydric alcohols (glycerin, sorbitol) did not enter into chemical reaction with film forming agents (starch and gelatin). Only acid amides (urea) react with gelatin strengthening biodegradable films. The obtained results allow to predict the properties of the films, and in future will help to expand the range of raw materials used to make biodegradable films.
Highlights
Different nature of plasticizers is a prerequisite for chemical reaction in film making that has a positive or negative impact on the quality of biodegradable films
The use of infrared spectroscopy to study the properties of the film in the cited literature [18] does not explain chemical reaction between film constituents
The aim of the research is to determine the effect of organic plasticizers on the quality of biodegradable films
Summary
The following components as filmformer, plasticizer and solvent are constituents of biodegradable films [1]. The aim of the research is to obtain comparative characteristics of main organoleptic and physico-mechanical properties depending on the organic plasticizer in order to predict the properties of new raw materials for making of biodegradable films based on natural polymers. Hydrophilic plasticizers (glycerol, sorbitol and urea) increase permeability and moisture absorption properties of such films, without changing their mechanical properties. The same team of researchers studied the effect of sucrose and a mixture of glycerol/sorbitol, glycerol, urea and sorbitol as plasticizer on the microstructure, absorption of moisture, vapor permeability and mechanical properties of oat-starch films aged at different conditions of relative humidity [6]. Scientific publications don’t contain research on urea as a plasticizer for biodegradable films and comparative analysis of the most common plasticizers (sucrose, sorbitol, glycerin and others) hasn’t been done. The use of infrared spectroscopy to study the properties of the film in the cited literature [18] does not explain chemical reaction between film constituents
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Eastern-European Journal of Enterprise Technologies
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
