Sustainable composites from microcrystalline cellulose and cellulose acetate: 3D printing and performance optimization

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES
Laura Daniela Hernandez-Ruiz , Malik Hassan , Tao Wang , Amar K. Mohanty , Manjusri Misra
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引用次数: 0

Abstract

Novel green composites were developed using microcrystalline cellulose (MCC) and plasticized cellulose acetate (pCA) to assess their viability for application in additive manufacturing (AM), specifically fused filament fabrication (FFF). This study represents one of the first attempts to fabricate and optimize a sustainable MCC-pCA composite for use as a 3D printing filament. The Taguchi L27 experimental design was employed to optimize five critical FFF parameters, namely nozzle temperature, printing speed, infill density, raster angle, and layer height, with the objective of maximizing mechanical performance. Optimal printing parameters were determined to be a nozzle temperature of 230 °C, a printing speed of 1800 mm/min, an infill density of 100 %, a raster angle of 0°, and a layer height of 0.15 mm. Under these conditions, the 3D-printed samples exhibited mechanical properties comparable to those of injection-molded counterparts, with a 37 % increase in impact strength. The coefficient of linear thermal expansion (CLTE) of the optimized 3D-printed sample was 89.36 μm/m °C (perpendicular) and 65.39 μm/m °C (parallel), demonstrating lower thermal expansion than injection-molded counterparts (108.65 μm/m °C and 47.06 μm/m °C, respectively). Furthermore, the heat deflection temperature (HDT) of the optimized 3D-printed sample was 92.18 °C, surpassing that of injection-molded samples (69.59 °C), indicating superior thermal resistance in the 3D-printed part. As a proof-of-concept, a 3D printed finger splint was fabricated using the optimized parameters, showcasing the potential of this sustainable composite for biomedical applications.
从微晶纤维素和醋酸纤维素可持续复合材料:3D打印和性能优化
利用微晶纤维素(MCC)和塑化醋酸纤维素(pCA)开发了新型绿色复合材料,以评估其在增材制造(AM),特别是熔融长丝制造(FFF)中的应用可行性。这项研究代表了制造和优化可持续的MCC-pCA复合材料用作3D打印长丝的首次尝试之一。采用Taguchi L27实验设计,优化喷嘴温度、打印速度、填充密度、光栅角度和层高这5个FFF关键参数,以实现力学性能最大化。确定最佳打印参数为喷嘴温度230℃,打印速度1800 mm/min,填充密度100%,光栅角度0°,层高0.15 mm。在这些条件下,3d打印样品的机械性能与注塑样品相当,冲击强度提高了37%。优化后的3d打印样品的线性热膨胀系数(CLTE)为89.36 μm/m°C(垂直方向)和65.39 μm/m°C(平行方向),热膨胀系数分别低于注射成型样品(108.65 μm/m°C和47.06 μm/m°C)。此外,优化后的3d打印样品的热变形温度(HDT)为92.18℃,超过了注塑样品的69.59℃,表明3d打印部件具有优异的热阻性。作为概念验证,使用优化的参数制造了3D打印手指夹板,展示了这种可持续复合材料在生物医学应用中的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Composites Part C Open Access
Composites Part C Open Access Engineering-Mechanical Engineering
CiteScore
8.60
自引率
2.40%
发文量
96
审稿时长
55 days
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