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Biocomposites with high strength and thermal and noise insulation by reinforcing polypropylene with stems and fibers from Arundinaria gigantea
Polymer Composites ( IF 5.2 ) Pub Date : 2021-08-17 , DOI: 10.1002/pc.26261
Chunyan Hu 1, 2 , Jayanth Vittal 3 , Vijaykumar Guna 3 , Yi Zhao 4 , Mohan Boganarasimhaiah 3 , Narendra Reddy 3
Affiliation  

Arundinaria gigantea commonly referred to as giant cane (GC) shows potential to be a sustainable, renewable, and low-cost source for natural cellulose fibers and biocomposites. GC is considered a weed and is found extensively, particularly along river banks and also as canopy under forest trees. The grass is made up of stems (culms) that resemble bamboo but with smaller diameters. In this study, the possibility of extracting natural cellulose fibers from the culms and also to utilize the culms directly as reinforcement for polypropylene (PP) biocomposites has been explored. Natural cellulose fibers extracted from the culms had cellulose content of about 50%. The fibers had considerably high tensile strength of 543 MPa and elongation of 5.6%. Biocomposites with varying tensile and flexural properties could be obtained depending on the proportion of the reinforcement and matrix and density of the biocomposites. Furthermore, reinforcing PP with GC increased acoustic sorption but decreased thermal conductivity. GC offers potential to develop fibers and biocomposites with desired properties as a substitute to the conventional lignocellulosic fibers obtained from fiber crops.

中文翻译:

通过用来自 Arundinaria gigantea 的茎和纤维增强聚丙烯,具有高强度、隔热和隔音的生物复合材料

紫砂通常被称为巨甘蔗 (GC) 的纤维具有成为天然纤维素纤维和生物复合材料的可持续、可再生和低成本来源的潜力。GC 被认为是一种杂草,广泛存在,尤其是沿河岸和林木下的树冠。草由类似于竹子但直径较小的茎(秆)组成。在这项研究中,探索了从秆中提取天然纤维素纤维以及直接利用秆作为聚丙烯 (PP) 生物复合材料的增强材料的可能性。从秆中提取的天然纤维素纤维的纤维素含量约为 50%。纤维具有相当高的拉伸强度 543 兆帕和 5.6%的伸长率。根据增强材料和基质的比例以及生物复合材料的密度,可以获得具有不同拉伸和弯曲性能的生物复合材料。此外,用 GC 增强 PP 增加了吸声但降低了热导率。GC 提供了开发具有所需特性的纤维和生物复合材料的潜力,以替代从纤维作物中获得的传统木质纤维素纤维。
更新日期:2021-08-17
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