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Characterization of Raw and Treated Curaua Fibers to be Applied as Reinforcement in Composites

机译：原料和处理过的Curaua纤维的特性，可作为复合材料的增强材料

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摘要

Lignocellulosic fibers present several advantages over synthetic fibers, such as low cost and biodegradability. In this work the tensile mechanical behavior of as-received and surface treated curaua fibers was analyzed. Mercerization and three different enzyme surface treatments were used. The tensile stress data were analyzed using the Weibull statistical distribution, and SEM was used to characterize the surface modifications caused by the treatments. The results show that mercerization causes an increase of the deformation capacity of the fibers. This result was attributed to the removal of hemicellulose, and to an increase of mobility of the internal fibrils. The increase of NaOH concentration at the alkali solution affects both the surface characteristics and the tensile properties. Solutions with more than 5%wt NaOH degraded the fibers. The enzyme treatments increase the tensile mechanical properties, but also increase their brittleness.
机译：木质纤维素纤维具有优于合成纤维的多个优点，例如低成本和可生物降解性。在这项工作中，分析了原样和表面处理过的姜黄纤维的拉伸机械性能。使用了丝光处理和三种不同的酶表面处理。使用威布尔统计分布分析拉伸应力数据，并使用SEM表征由处理引起的表面改性。结果表明，丝光处理导致纤维的变形能力增加。该结果归因于半纤维素的去除以及内部原纤维的迁移率的增加。碱溶液中NaOH浓度的增加会影响表面特性和拉伸性能。 NaOH含量超过5％（重量）的溶液会使纤维降解。酶处理增加了拉伸机械性能，但也增加了它们的脆性。

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