• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural fibers >Extraction and Characterization of Calotropis gigantea Bast Fibers as Novel Reinforcement for Composites Materials
【24h】

Extraction and Characterization of Calotropis gigantea Bast Fibers as Novel Reinforcement for Composites Materials

机译：Calotropis gigantea韧皮纤维的提取和表征作为复合材料的新型增强材料

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of this study is to scrutinize the use of Calotropis gigantea bast fibers as potential reinforcement in polymer composites. The bast fibers were extracted from the Calotropis gigantea plant bark and some of them were treated with alkali (5 wt.%) solution. The chemical composition, physico-chemical structural properties of the untreated and the alkali treated Calotropis bast fibers were studied. The results of chemical composition analysis indicated that alkali treatment removed most of the non-cellulose materials as confirmed by the FTIR analysis. The X-ray diffraction results exhibited that the crystallinity index of the alkali treated fibers increased in comparison with the untreated fibers, which agrees with the results obtained in the mechanical tests. The tensile strength and modulus of the alkali treated fibers were found to be higher whereas the elongation at break was lower than the untreated fibers. Thermal stability of alkali treated fibers was lower than that of the untreated fiber. Scanning electron micrographs showed roughening of the surface of the fiber due to the removal of the surface impurities and non-cellulosic components on alkali treatment. It can be concluded that alkali treatment is an effective method to improve the surface and mechanical properties of Calotropis bast fibers to be used in composite materials.
机译：这项研究的目的是仔细研究Calotropis gigantea韧皮纤维在聚合物复合材料中的潜在增强作用。韧皮纤维是从Calotropis gigantea植物的树皮中提取的，其中一些用碱（5％重量）溶液处理。研究了未经处理和经碱处理的Calotropis韧皮纤维的化学组成，理化结构性质。化学成分分析的结果表明，经FTIR分析证实，碱处理去除了大多数非纤维素材料。 X射线衍射结果显示，与未处理的纤维相比，碱处理的纤维的结晶度指数增加，这与在机械测试中获得的结果一致。发现碱处理的纤维的拉伸强度和模量较高，而断裂伸长率低于未处理的纤维。碱处理过的纤维的热稳定性低于未处理过的纤维。扫描电子显微镜照片显示，由于在碱处理中去除了表面杂质和非纤维素成分，使纤维表面变粗糙。可以得出结论，碱处理是一种改善复合材料所用的Calotropis韧皮纤维的表面和机械性能的有效方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号