Wheat straw pre-treatments using eco-friendly strategies for enhancing the tensile properties of bio-based polylactic acid composites
Wheat straw pre-treatments using eco-friendly strategies for enhancing the tensile properties of bio-based polylactic acid composites
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DOI：
10.1016/j.indcrop.2020.112836
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发表时间：
2020-11-01
影响因子：
5.9
通讯作者：
Gecevicius, Mantas
中科院分区：
文献类型：
--
作者：
Chougan, Mehdi;Ghaffar, Seyed Hamidreza;Gecevicius, Mantas
对麦秆进行单独和混合预处理，包括热水、蒸汽和微波，以减轻表面质量缺陷，从而实现基材和聚乳酸基质之间的紧密界面结合。微观结构分析表明，预处理导致细胞膨胀，进而促进麦秆和 PLA 之间的机械缠结，从而提高生物基复合材料的拉伸性能。与未经处理的相比，热水和蒸汽预处理的麦秆生物基复合材料的拉伸强度、断裂伸长率、弹性模量和韧性分别增加了 166%、18%、68% 和 285%。
Individual and hybrid pre-treatments, including hot water, steam and microwave were used on wheat straw to mitigate the surface quality deficiencies for an intimate interfacial bond between substrate and Polylactic Acid matrix. Microstructural analysis showed the expansion of cells due to the pre-treatments which in turn promotes mechanical entanglement between wheat straw and PLA, thus, improving the tensile properties of bio-based composites. The tensile strength, elongation at break, elastic modulus, and toughness increased by 166 %, 18 %, 68 %, and 285 %, respectively, for hot water followed by steam pre-treated wheat straw bio-based composites compared to untreated.