Characterization of Polylactic Acid Filament With Biodegradable Hemp Fiber Infused During Additive Manufacturing Process

IF 1 Q4 ENGINEERING, MANUFACTURING Journal of Micro and Nano-Manufacturing Pub Date : 2022-06-27 DOI:10.1115/msec2022-85176

M. Hanson, Che-Hao Yang

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引用次数: 1

Abstract

Fused Filament Fabrication (FFF) is one of the common methods among the Additive Manufacturing (AM) processes. In this study, hemp fiber, a sustainable, and fast degraded material introduced and mixed with fresh Polylactic Acid (PLA) filament with 3 wt%, 7.5 wt%, and 10 wt% to improve the drawbacks of pure PLA filament and sustain its required properties. The results from the fatigue testing of pure PLA, and various hemp-fiber infused PLA indicated that increasing the wt% content of a hemp fiber infused PLA specimen at a certain point does increase the ultimate bending stress as well as the overall fatigue life of a pure PLA specimen. The 10 wt% hemp fiber specimens provided a 7.32% increase in the mean ultimate flexural strength over pure PLA. The mean of Young’s modulus also increased by 10.65% for the 10 wt% hemp fiber specimen and by 23.05% for the 7.5 wt% hemp fiber specimen over PLA. The 10 wt% hemp fiber specimens also provided a 4.05% increase in fatigue life over PLA. The 3 wt% did not provide a significant improvement in the study. These findings provide insight into the AM processes and lead to the development of environment-friendly composites in the industries.

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生物可降解大麻纤维增材制造工艺中聚乳酸长丝的表征

熔融长丝制造(FFF)是增材制造(AM)工艺中常见的方法之一。为了改善纯PLA长丝的缺点，保持其要求的性能，本研究引入了一种可持续、快速降解的材料麻纤维，并与3 wt%、7.5 wt%和10 wt%的新鲜聚乳酸(PLA)长丝混合。纯PLA和不同种类大麻纤维PLA的疲劳试验结果表明，在一定程度上增加大麻纤维PLA试样的wt%含量，可以提高纯PLA试样的极限弯曲应力和整体疲劳寿命。与纯PLA相比，10%的大麻纤维样品提供了7.32%的平均极限抗弯强度增加。杨氏模量的平均值也增加了10.65%的10重量%的大麻纤维样品和23.05%的7.5重量%的大麻纤维样品比PLA。10%的大麻纤维试样也提供了4.05%的疲劳寿命比PLA增加。在这项研究中，3 wt%并没有提供显著的改善。这些发现提供了对增材制造工艺的深入了解，并促进了环保复合材料在工业中的发展。

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来源期刊

Journal of Micro and Nano-Manufacturing ENGINEERING, MANUFACTURING-

CiteScore

2.70

自引率

0.00%

发文量

期刊介绍： The Journal of Micro and Nano-Manufacturing provides a forum for the rapid dissemination of original theoretical and applied research in the areas of micro- and nano-manufacturing that are related to process innovation, accuracy, and precision, throughput enhancement, material utilization, compact equipment development, environmental and life-cycle analysis, and predictive modeling of manufacturing processes with feature sizes less than one hundred micrometers. Papers addressing special needs in emerging areas, such as biomedical devices, drug manufacturing, water and energy, are also encouraged. Areas of interest including, but not limited to: Unit micro- and nano-manufacturing processes; Hybrid manufacturing processes combining bottom-up and top-down processes; Hybrid manufacturing processes utilizing various energy sources (optical, mechanical, electrical, solar, etc.) to achieve multi-scale features and resolution; High-throughput micro- and nano-manufacturing processes; Equipment development; Predictive modeling and simulation of materials and/or systems enabling point-of-need or scaled-up micro- and nano-manufacturing; Metrology at the micro- and nano-scales over large areas; Sensors and sensor integration; Design algorithms for multi-scale manufacturing; Life cycle analysis; Logistics and material handling related to micro- and nano-manufacturing.