材料科学
复合材料
极限抗拉强度
环氧树脂
抗弯强度
延伸率
傅里叶变换红外光谱
扫描电子显微镜
纤维
化学工程
工程类
作者
K. Z. M. Abdul Motaleb,Abdul Ahad,Ginta Laureckienė,Rimvydas Milašius
出处
期刊:Polymers
[MDPI AG]
日期:2021-10-29
卷期号:13 (21): 3744-3744
被引量:43
标识
DOI:10.3390/polym13213744
摘要
Four types of nonwovens were prepared from different sections of the banana tree e.g., outer bark (OB), middle bark (MB), inner bark (IB) and midrib of leaf (MR) by wet laid web formation. They were reinforced with two different types of matrices e.g., epoxy and polyester, to make eight variants of composites. Treatments including alkali on raw fibers, water repellent on nonwovens and gamma radiation on composites were applied in order to investigate their effects on properties of the composites such as water absorbency, tensile strength (TS), flexural strength (FS) and elongation at break (Eb%). Variations in the morphological structure and chemical composition of both raw banana fibers and fibers reinforced by the treatments were analyzed by Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM). OB composites exhibited higher water absorbency, TS and FS and lower Eb% compared to other types of composites. Epoxy composites were found to have 16% lower water absorbency, 41.2% higher TS and 39.1% higher FS than polyester composites on an average. Water absorbency of the composites was reduced 32% by the alkali treatment and a further 63% by water repellent treatment. TS and FS of the composites were on average improved 71% and 87% by alkali treatment and a further 30% and 35% by gamma radiation respectively.
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