Cellulose nanocrystals (CNC), especially the functionalized, have been used as reinforcement to produce biodegradable nanocomposites due to its abundance, biodegradability and good thermal and mechanical properties. The incorporation of CNC to poly(butylene adipate-co-terephthalate) (PBAT) can influence the polymer properties. However, the composites properties can be better or worse than the pure polymer properties, depending on the type of functionalization. Therefore, this work aims to study the influence of CNC functionalization on the biodegradability and the thermal and mechanical properties of the composites PBAT/CNC. In order to attain the main objective, two process variables that can influence the properties of composites will be studied: functionalization type of CNC and the amount of CNC in the composite. The CNCs will be isolated from sugarcane bagasse and functionalized with dodecylamine (DDA) and ethylenediamine (EDA). Nanocomposites PBAT/CNC will be prepared in situ by polycondensation process, with CNC concentration ranging from 0.2 to 10 wt%. The biodegradability, mechanical and thermal properties of composites and pure polymer will be systematically studied. The relationship between this information will give support to understand the interaction between the CNC and PBAT, also to clarify how the CNC can change the properties of the nanocomposite.
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