The global trend of environmental protection has led to replacing synthetic fibers in every feasible application with natural fibers. An alteration of the fiber's surface is essential for the natural fiber to be more suitable for use. In this study, the mercerization processes including 5% (wt/vol) sodium hydroxide solution at five different soaking times (15, 30, 45, 60, and 75 min), were used in this study to enhance various features of Ziziphus nummularia fibers isolated from Ziziphus nummularia plant stems. Results showed that 60 min alkalized Ziziphus nummularia fibers had cellulose content of 65.72%, which seems to be higher, and it was termed as optimally alkalized Ziziphus nummularia fibers. The thermal studies showed that optimally alkalized Ziziphus nummularia fibers had a degradation temperature of 360°C. The optimally alkalized Ziziphus nummularia fibers showed a crystalline index of 50.6% and crystal size of 3.52 nm. Epoxy composites were manufactured with various loading percentages of optimally alkalized and raw Ziziphus nummularia fibers to prove the application suitability. It was shown that 20 wt% of optimally alkalized Ziziphus nummularia fibers-based epoxy composites showed a higher ultimate tensile strength of 40.31 MPa than all other composites. Scanning Electron microscope studies elucidated the fiber's surface behavior and other characteristics of fibers and tested epoxy composites.

中文翻译：

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原碱化枣树皮纤维及其聚合物复合材料在轻量化应用中的适用性评估

全球环保趋势导致在所有可行的应用中都用天然纤维代替合成纤维。为了使天然纤维更适合使用，纤维表面的改变是必不可少的。在本研究中，在五个不同的浸泡时间（15、30、45、60 和 75 分钟）下，包括 5% (wt/vol) 氢氧化钠溶液的丝光工艺被用于增强Ziziphus nummularia纤维的各种特性从Ziziphus nummularia植物茎中分离。结果表明，碱化 60 min的麻豆纤维的纤维素含量为 65.72%，似乎更高，被称为最佳碱化麻豆纤维。纤维。热学研究表明，最佳碱化Ziziphus nummularia纤维的降解温度为 360°C。最佳碱化的枣子纤维结晶指数为50.6%，晶体尺寸为3.52 nm。使用各种负载百分比的最佳碱化和生Ziziphus nummularia纤维制造环氧树脂复合材料，以证明应用适用性。结果表明，20 wt% 的最佳碱化Ziziphus nummularia纤维基环氧复合材料的极限抗拉强度为 40.31 MPa，高于所有其他复合材料。扫描电子显微镜研究阐明了纤维的表面行为和纤维的其他特性，并测试了环氧复合材料。