Modification of polylactic acid (PLA) to improve mechanical properties for future 3D printing applications

Abstract

In recent years, the junction of sustainability and technology has led to innovative solutions that address the environmental impact of traditional manufacturing processes. One interesting development is combining eco-friendly bioplastics with 3D printing. Traditional plastics, derived from non-renewable resources, contribute significantly to pollution and resource exhaustion. In comparison, bioplastics are derived from renewable sources such as sugarcane or corn, presenting a greener alternative. The integration of bioplastics into 3D printing not only reduces dependence on fossil fuels, but also promotes the circular economy by enabling recycling of organic materials. However, the search for sustainable materials does not stop at bioplastics alone. It extends to optimizing their mechanical properties to meet the requirements of various applications. One promising approach involves the introduction of reinforcing fibers, such as natural fibers or composites, to bioplastics before the 3D printing process. This addition improves the structural strength and durability of the printed objects, expanding their possible applications in industries ranging from packaging to medical devices. Although many studies have shown promising results, challenges remain. Some of these challenges include achieving uniform dispersion of natural fibers, optimizing processing conditions and ensuring consistent crosslinking. This study aims to provide practical insights into sustainable manufacturing by examining how bioplastics, specifically polylactic acid (PLA), reinforcing fibers, and polymer crosslinking work together in 3D printing. In line with global efforts for eco-friendly practices, the research establishes a foundation for understanding the potential benefits of bio-based materials compared to traditional ones

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