IMAM, UNaM, CONICET, FCEQYN, Programa de Celulosa y Papel (PROCYP), Misiones, Félix de Azara 1552, Posadas, Argentina.
Peruvian LCA and Industrial Ecology Network (PELCAN), Department of Engineering, Pontificia Universidad Católica del Perú (PUCP), 1801 Avenida Universitaria, San Miguel, Lima 15088, Peru.
Molecules. 2020 May 5;25(9):2158. doi: 10.3390/molecules25092158.
Bio-polyethylene (BioPE, derived from sugarcane), sugarcane bagasse pulp, and two compatibilizers (fossil and bio-based), were used to manufacture biocomposite filaments for 3D printing. Biocomposite filaments were manufactured and characterized in detail, including measurement of water absorption, mechanical properties, thermal stability and decomposition temperature (thermo-gravimetric analysis (TGA)). Differential scanning calorimetry (DSC) was performed to measure the glass transition temperature (Tg). Scanning electron microscopy (SEM) was applied to assess the fracture area of the filaments after mechanical testing. Increases of up to 10% in water absorption were measured for the samples with 40 wt% fibers and the fossil compatibilizer. The mechanical properties were improved by increasing the fraction of bagasse fibers from 0% to 20% and 40%. The suitability of the biocomposite filaments was tested for 3D printing, and some shapes were printed as demonstrators. Importantly, in a cradle-to-gate life cycle analysis of the biocomposites, we demonstrated that replacing fossil compatibilizer with a bio-based compatibilizer contributes to a reduction in CO-eq emissions, and an increase in CO capture, achieving a CO-eq storage of 2.12 kg CO eq/kg for the biocomposite containing 40% bagasse fibers and 6% bio-based compatibilizer.
生物聚乙烯（BioPE，源自甘蔗）、甘蔗渣浆和两种增容剂（化石基和生物基）被用于制造用于 3D 打印的生物复合材料长丝。详细制造和表征了生物复合材料长丝，包括吸水性、机械性能、热稳定性和分解温度（热重分析（TGA））的测量。进行差示扫描量热法（DSC）以测量玻璃化转变温度（Tg）。扫描电子显微镜（SEM）用于评估机械测试后长丝的断裂面积。对于含有 40wt%纤维和化石增容剂的样品，测量到的吸水率增加了高达 10%。通过将甘蔗纤维的分数从 0%增加到 20%和 40%，可以提高机械性能。测试了生物复合材料长丝的 3D 打印适用性，并打印了一些形状作为演示。重要的是，在生物复合材料的摇篮到大门生命周期分析中，我们证明用生物基增容剂替代化石基增容剂有助于减少 CO-eq 排放，并增加 CO 捕获，对于含有 40%甘蔗纤维和 6%生物基增容剂的生物复合材料，实现了 2.12kg CO eq/kg 的 CO-eq 存储。
