3D Printed Polylactic Acid - Hemp Fiber Composites: Mechanical, Thermal, and Microcomputed Tomography Data

Hemp fiber was used untreated and treated with sodium hydroxide or (3-aminopropyl)triethoxysilane (APTES) as an additive in polylactic acid (PLA) for fused filament fabrication (FFF) of tensile test specimens. Composites granules were produced by solvent processing with 10 wt. % of hemp fiber to use as feedstock for the extrusion of filaments compatible with commercial FFF printers. The dataset shows the thermal properties of the various composites, which were used to determine the appropriate temperatures required for extrusion of filaments and FFF printer settings. Microcomputed tomography imaging was performed and tensile mechanical properties of FFF-printed tensile test specimens were determined as a function of hemp fiber surface treatment. The data provides an assessment of the use of minimally processed hemp fiber as a filler or mechanical enhancer of thermoplastic materials for additive manufacturing. The database is organized into five folders. The folder "Digital Camera Images" contains a JPEG image of the hemp fiber used for this dataset. "DSC" contains a .xlsx file containing the DSC data for each granule produced. "Microcomputed Tomography" contains two zip files containing .tiff files of the tomography images of a FFF printed APTES-treated hemp - PLA tensile specimen in 8bit and 16bit formats. A .mp4 movie of the 3D volume is also included in this folder. Six optical microscope images taken at 40X magnification in .jpg format and a .xlsx file of 100 hemp diameter measurements are within the folder "Optical Microscopy". The folder "Tensile Mechanical Data" contains a .xlsx file with the tensile mechanical data for each of the FFF-printed tensile test specimens produced.

本数据集以未处理的大麻纤维（Hemp fiber），以及经氢氧化钠（sodium hydroxide）或（3-氨基丙基）三乙氧基硅烷（(3-aminopropyl)triethoxysilane, APTES）处理的大麻纤维作为添加剂，应用于聚乳酸（polylactic acid, PLA）中，用于制备熔融丝制造（fused filament fabrication, FFF）拉伸试样。研究人员通过溶剂加工法制备了纤维质量分数为10 wt.%的复合颗粒，作为适配商用熔融丝制造打印机的丝材挤出原料。本数据集包含各类复合材料的热性能数据，用于确定丝材挤出及熔融丝制造打印所需的适宜工艺温度参数。研究人员开展了显微计算机断层扫描（Microcomputed Tomography）成像，并测试了熔融丝制造打印的拉伸试样的拉伸力学性能，其拉伸力学性能随大麻纤维表面处理方式的差异而改变。本数据集可用于评估经轻度加工的大麻纤维作为增材制造用热塑性材料的填充剂或力学增强剂的应用潜力。本数据库共分为五个文件夹："Digital Camera Images"文件夹内含本数据集所用大麻纤维的JPEG格式图像；"DSC"文件夹内含各复合颗粒的差示扫描量热法（DSC）数据的.xlsx文件；"Microcomputed Tomography"文件夹内含两个压缩包，分别存储8位和16位格式的经APTES处理的大麻纤维-PLA熔融丝制造拉伸试样的断层扫描TIFF格式图像，该文件夹同时包含一段3D体积重建的MP4格式视频；"Optical Microscopy"文件夹内含6张40倍放大倍率的.jpg格式光学显微镜图像，以及一份包含100组大麻纤维直径测量数据的.xlsx文件；"Tensile Mechanical Data"文件夹内含各熔融丝制造打印拉伸试样的拉伸力学数据的.xlsx文件。