Abstract
The aim of study was to investigate the influence of kaolin on the physical properties and utility of film produced from native starch. The work involved measurements of strength, structure, and thermal properties. The films were prepared by the casting method. Composite films with 0%, 5%, 10%, and 15% kaolin additives were examined. Measurements of mechanical properties were carried out using the uniaxial tensile test, the nanoindentation test, and nanoscratching. Surface properties were examined by atomic force microscopy and contact angle measurements. Structure was determined by the X-ray diffraction method, and thermal properties were determined by differential scanning calorimetry. A significant influence of kaolin on the strength parameters and thermal and barrier properties of composite films was found. An increase in kaolin content reduced the tensile strength, Young’s modulus, and Poisson’s ratio. Structural analysis showed a partial intercalation and the layered arrangement of kaolin particles. Kaolin additives increased the barrier properties of water vapor in composite films of about 9%. Biopolymer modification by nanoclay reduced the thermal stability of composite films by 7% and could accelerate the biodegradation process. Increasing the concentration of kaolin in the biopolymer matrix led to heightened surface roughness (approximately 64%) and wettability of the surfaces of the film composites of 58%.
Highlights
One of the issues of great concern today relating to environmental protection is the increase in the production of packaging based on biodegradable materials [1]
Recent studies have shown that biopolymer materials usually have poor mechanical properties [4]. These materials are characterized by strong hydrophilic properties, which form a negligible barrier to water vapor [5]
The aim of this study was to examine the influence of unmodified kaolin on the properties of thermoplastic starch (TPS) films
Summary
One of the issues of great concern today relating to environmental protection is the increase in the production of packaging based on biodegradable materials [1]. Making biodegradable materials from cyclically renewable and environmentally friendly plant sources is creating opportunities to replace conventional petroleum products [2]. Such materials could be used as ecological disposable packaging, which could be composted with out-of-date or residual products [3]. Recent studies have shown that biopolymer materials usually have poor mechanical properties [4]. These materials are characterized by strong hydrophilic properties, which form a negligible barrier to water vapor [5].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
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 callDisclaimer: 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.
