• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >The Effects on Mechanical Properties and Crystallization of Poly (L-lactic acid) Reinforced by Cellulosic Fibers with Different Scales
【24h】

The Effects on Mechanical Properties and Crystallization of Poly (L-lactic acid) Reinforced by Cellulosic Fibers with Different Scales

机译：不同尺度纤维素纤维对聚（L-乳酸）力学性能和结晶的影响

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

Bacterial cellulose (BC), microcrystalline cellulose (MCC), and bamboo cellulosic fibers (BCFs) were used to reinforce poly(l-lactic acid) (PLLA) based bio-composites. The mechanical properties and crystallization of the composites were studied through mechanical testing, differential scanning calorimetry, X-ray diffraction, scanning electron microscopy, and polarizing microscope. The incorporation of all three kinds of cellulose increased the stiffness of the composites compared to pure PLLA. The reinforcing effect of the MCC in the composites is most significant. The Young’s modulus and impact toughness of the MCC/PLLA composites were increased by 44.4% and 58.8%, respectively. The tensile strength of the MCC/PLLA composites was increased to 71 MPa from 61 MPa of PLLA. However, the tensile strength of the composites reinforced with BCF or BC was lower than PLLA. The three kinds of cellulosic fibers improved the crystallization of PLLA. The BC with smallest size provided the composites with smallest grain and highest crystallinity.
机译：细菌纤维素（BC），微晶纤维素（MCC）和竹纤维素纤维（BCF）用于增强基于聚（l-乳酸）（PLLA）的生物复合材料。通过机械测试，差示扫描量热法，X射线衍射，扫描电子显微镜和偏光显微镜研究了复合材料的力学性能和结晶。与纯PLLA相比，所有三种纤维素的掺入均可提高复合材料的刚度。 MCC在复合材料中的增强作用最为显着。 MCC / PLLA复合材料的杨氏模量和冲击韧性分别提高了44.4％和58.8％。 MCC / PLLA复合材料的拉伸强度从61 MPa的PLLA增加到71 MPa。但是，用BCF或BC增强的复合材料的拉伸强度低于PLLA。三种纤维素纤维改善了PLLA的结晶。尺寸最小的BC为复合材料提供了最小的晶粒和最高的结晶度。

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