Serra-Parareda Ferran, Tarrés Quim, Delgado-Aguilar Marc, Espinach Francesc X, Mutjé Pere, Vilaseca Fabiola
LEPAMAP Group, Department of Chemical Engineering, University of Girona, 17003 Girona, Spain.
Chair on Sustainable Industrial Processes, University of Girona, 17003 Girona, Spain.
Materials (Basel). 2019 Dec 12;12(24):4182. doi: 10.3390/ma12244182.
The cultivation of cereals like rye, barley, oats, or wheat generates large quantities of agroforestry residues, which reaches values of around 2066 million metric tons/year. Barley straw alone represents 53%. In this work, barley straw is recommended for the production of composite materials in order to add value to this agricultural waste. First of all, thermomechanical (TMP) fibers from barley straw are produced and later used to reinforce bio-polyethylene (BioPE) matrix. TMP barley fibers were chemically and morphologically characterized. Later, composites with optimal amounts of coupling agent and fiber content ranging from 15 to 45 wt % were prepared. The mechanical results showed the strengthening and stiffening capacity of the TMP barley fibers. Finally, a micromechanical analysis is applied to evaluate the quality of the interface and to distinguish how the interface and the fiber morphology contributes to the final properties of these composite materials.
种植黑麦、大麦、燕麦或小麦等谷物会产生大量农林废弃物，每年产生量约达2.066亿吨。仅大麦秸秆就占53%。在这项工作中，推荐使用大麦秸秆生产复合材料，以便为这种农业废弃物增加价值。首先，生产出来自大麦秸秆的热机械（TMP）纤维，随后用于增强生物聚乙烯（BioPE）基体。对TMP大麦纤维进行了化学和形态表征。之后，制备了含有最佳量偶联剂且纤维含量在15%至45%（重量）之间的复合材料。力学测试结果表明了TMP大麦纤维的增强和硬化能力。最后，应用微观力学分析来评估界面质量，并区分界面和纤维形态如何影响这些复合材料的最终性能。
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