Ferretti Luca, Russo Pietro, Passaro Jessica, Nanni Francesca, D'Ascoli Saverio, Fabbrocino Francesco, Bragaglia Mario
Department of Enterprise Engineering "Mario Lucertini", University of Rome "Tor Vergata" and INSTM RU Roma-Tor Vergata, 00133 Rome, Italy.
Institute for Polymers, Composites and Biomaterials, National Council of Research, 80078 Pozzuoli, Italy.
Materials (Basel). 2025 Jul 23;18(15):3453. doi: 10.3390/ma18153453.
In this work, bio-based thermoelectric composites were developed using acrylated epoxidized soybean oil (AESO) as the polymer matrix and bismuth telluride (BiTe) as the thermoelectric filler. The materials were formulated for both UV-curing and thermal-curing processes, with a focus on Digital Light Processing (DLP) 3D printing. Although UV curing proved ineffective at high filler concentrations due to the light opacity of BiTe, thermal curing enabled the fabrication of stable, homogeneously dispersed composites. The samples were thoroughly characterized through rheology, FTIR, TGA, XRD, SEM, and density measurements. Thermoelectric performance was assessed under a 70 °C temperature gradient, with Seebeck coefficients reaching up to 51 µV/K. Accelerated chemical degradation studies in basic media confirmed the degradability of the matrix. The results demonstrate the feasibility of combining additive manufacturing with sustainable materials for low-power thermoelectric energy harvesting applications.
在这项工作中，以丙烯酸化环氧大豆油（AESO）为聚合物基体、碲化铋（BiTe）为热电填料，制备了生物基热电复合材料。这些材料针对紫外线固化和热固化工艺进行了配方设计，重点是数字光处理（DLP）3D打印。尽管由于BiTe的光不透明性，紫外线固化在高填料浓度下被证明无效，但热固化能够制造出稳定、均匀分散的复合材料。通过流变学、傅里叶变换红外光谱（FTIR）、热重分析（TGA）、X射线衍射（XRD）、扫描电子显微镜（SEM）和密度测量对样品进行了全面表征。在70℃的温度梯度下评估了热电性能，塞贝克系数高达51 μV/K。在碱性介质中的加速化学降解研究证实了基体的可降解性。结果证明了将增材制造与可持续材料相结合用于低功率热电能量收集应用的可行性。
