Hodnocení biodegradabilních polymerních materiálů

Abstract

With the increase of the ecological risks cause by fossil based plastics the use of bio-based polymers for the production of biodegradable plastics has appeared to be the solution to this issue. bioplastics are increasingly used in many domains such as medecine,packaging or agriculture.PHB and PLA have recently raised interest because of their properties and their ability to break down into natural elements in less than months. Despite their remarkable properties, these natural polymers have some limitations like the thermal stability, antioxidant activity, biodegradability, and high cost, which can be enhance by blending them with other polymers. The goal of this thesis is to assess the effects of additional polymers on PHB and PLA biodegradability by using both mineralization and microscopic method. the purpose is to obtain a material with competitive features with petrolium based products and which can biodegrade easily.