Akademik Veri Yönetim Sistemi
International Journal of Polymer Science, cilt.2025, sa.1, 2025 (SCI-Expanded, Scopus)
Purpose: The present work is aimed at developing polymeric filaments based on pulverized polylactic acid (PLA) and low content of waste jute and assessing their potential for 3D printing. PLA filaments with varying loading levels of ground jute from 0% to 10% by weight were extruded and printed at two different printing temperatures (190°C and 220°C) by using the material extrusion method (MEX) to manufacture composite structures. Design/Methodology/Approach: Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM) analyses, tensile tests, 3-point bending tests, and impact tests were conducted to evaluate the performance of incorporating waste jute fibers into pulverized PLA. Findings: From TGA results, it is realized that mass loss increased with increasing jute content, and the highest maximum degradation temperature (Tmax) was sharply decreased for the filaments that contain more than 3 wt% jute fibers. DSC analysis revealed that the addition of jute fibers increased the glass transition temperature (Tg) and melting temperature (Tm) of PLA, with the highest values observed at 10 wt% jute content, indicating improved thermal stability. Tensile tests showed that at 190°C, the composite containing 5 wt% jute (P5) exhibited ~18% higher Young′s modulus compared to neat PLA, while the highest improvement (~35%) was observed at 10 wt% jute (P10). However, tensile strength declined significantly at ≥ 5 wt% jute. At 220°C, overall tensile strengths were lower, and no significant differences were observed among the composites. In all cases, strain at break decreased progressively with increasing fiber content, indicating reduced ductility. For the flexural strength test results, a more significant reduction was observed across all samples at 220°C. The impact test results also revealed a significant decrease with increased printing temperature. Originality/Value: This study has two basic originalities: Filaments with varying waste jute contents were produced with PLA, and the effect of jute fibers on the thermal stability of PLA was investigated.