Application of a Filler in the Form of Micronized Chalcedonite to Biodegradable Materials Based on Thermoplastic Starch as an Element of the Sustainable Development of Polymeric Materials

Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2731 - 2731

Published: March 19, 2025

Thermoplastic starch (TPS) is one of the most-used biodegradable materials, alongside polylactide (PLA), and a promising alternative to traditional plastics. However, unmodified TPS has processing limitations due its mechanical properties susceptibility moisture. Modern modifications often lead loss full biodegradability, which limits contribution reducing polymer waste circular economy. This article presents novel TPS-based material enriched with micronized chalcedonite, improves composite while maintaining biodegradability. An assessment in injection molding technology tests strength, hardness, impact water absorption depending on filler content were carried out. The results obtained indicate that use chalcedonite not only strengthens structure but also contributes demand for synthetic additives, can reduce amount difficult-to-dispose waste. development more durable fully materials based step towards sustainable development, enabling reduction plastic environment supporting idea research open new perspectives ecological composites be used various industrial sectors, negative plastics environment.

Language: Английский

Comparable Analysis of Natural and Modified Starches from Kazakhstan: Physicochemical Properties, Applications, and Insights on Biodegradable Films

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(7), P. 3938 - 3938

Published: April 3, 2025

This study evaluates the potential of natural and thermally modified starches from Kazakhstan, including cassava, potato, wheat, corn, pea, rice, for production biodegradable films. Key physicochemical properties were analyzed using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), X-ray diffraction (XRD), Electron Microscopy (SEM), a Rapid Visco Analyzer (RVA). The results show that cassava starch, with highest magnesium content (43.07 mg/100 g) peak viscosity (1300 RVU), exhibits superior mechanical strength elasticity, making it ideal durable agricultural Corn high crystallinity moderate (1150 excellent stability long-term applications. In contrast, wheat rice starches, lower viscosities (750 650 RVU, respectively) biodegradability, are more suitable short-term eco-friendly Modification processes improved moisture resistance reduced retrogradation tendencies, particularly in corn starches. SEM analysis revealed have dense uniform surface structures, enhancing film durability flexibility. These findings highlight utilizing Kazakhstan’s starch resources localized production, reducing reliance on imports while promoting sustainable agriculture.

Language: Английский