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Sustainable Polyamide Composites Reinforced with Nanocellulose via Melt Mixing Process

Food Additives & Contaminants Part A 2024 5 citations

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This review examines the challenges and recent advances in incorporating nanocellulose into polyamide composites through melt processing, focusing on strategies to overcome nanocellulose's thermal degradation at high temperatures and its tendency to aggregate, with the goal of developing sustainable, high-performance engineering plastics.

Polymers

Introduction of biomass-based nanofillers into the polyamide matrix may represent a sustainable approach for the development of high-performance engineering plastics. From this standpoint, nanocellulose, derived from various cellulosic sources, has attracted a great deal of attention because of is exceptional mechanical properties, lightweight nature, and biodegradability, which presents significant advantages over conventional inorganic fillers. However, a technical challenge arises in the industrially favorable melt processing of polyamides and nanocellulose. This challenge is associated with the thermal degradation of nanocellulose at high processing temperatures, as well as the strong tendency of nanocellulose to aggregate within the polymer matrix. This review examines recent developments to address these issues. Key approaches based on the surface treatment of nanocellulose as well as optimization of processing conditions are discussed in detail, which can provide insights on the development of nanocellulose-reinforced polyamide composites.

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