• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of the Textile Institute >Structural and mechanical properties of polypropylene nanofibres fabricated by meltblowing
【24h】

Structural and mechanical properties of polypropylene nanofibres fabricated by meltblowing

机译：熔喷法制备聚丙烯纳米纤维的结构和力学性能

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

In this paper, a novel technique for the fabrication of nanofibres of polypropylene by meltblowing process with the injection of different fluids (such as nitrogen and water) has been explained. Low molecular weight polypropylene polymers were used in this study. The surface morphology of nanofibres was analysed by scanning electron microscopy. It was observed that the use of water gave better results compared to nitrogen for the fabrication of nanofibres. Nuclear magnetic resonance studies revealed similar chemical shifts for polymers and nanofibres, which indicated no change to the chemical functionality of the nanofibres by the application of fluids and high temperature during meltblowing. The mechanical properties of the nanofibres were investigated by using dumb-bell-shaped specimens in a universal tensile tester. The fibres fabricated with nitrogen were weaker and lower in tensile modulus compared to the fibres fabricated with water. The use of a rotating collector increased the tensile strength compared to a stationary collector due to higher degree of fibre alignment in the rotating drum. The tensile strength and modulus values were increased after annealing due to the increase in the crystallinity. The meltblown nanofibres showed hydrophobic nature as indicated by the high values of water contact angle. The hydrophobicity of the nanofibres fabricated with the injection of fluids did not change noticeably from the as-spun fibres fabricated without the fluids.
机译：在本文中，已经解释了一种通过熔喷工艺并注入不同的流体（例如氮气和水）来制造聚丙烯纳米纤维的新技术。在这项研究中使用了低分子量聚丙烯聚合物。通过扫描电子显微镜分析纳米纤维的表面形态。观察到，与水相比，使用水在制备纳米纤维方面具有更好的结果。核磁共振研究表明，聚合物和纳米纤维的化学位移相似，这表明在熔喷过程中施加流体和高温不会改变纳米纤维的化学功能。通过在通用拉伸试验机中使用哑铃形试样研究了纳米纤维的机械性能。与用水制得的纤维相比，用氮气制得的纤维较弱且拉伸模量较低。与固定收集器相比，旋转收集器的使用提高了拉伸强度，这是因为旋转滚筒中的纤维排列程度更高。由于结晶度的增加，退火后的抗拉强度和模量值增加。如水接触角的高值所示，熔喷纳米纤维表现出疏水性。与没有流体制备的初纺纤维相比，通过注入流体制备的纳米纤维的疏水性没有明显变化。

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