Investigation of the Free Volume Properties in Nylon6/carbon Nanotubes Nanocomposites by Position Annihilation Technology

Da-hai YU; Bo WANG; Tian-xi LIU

doi:10.14028/j.cnki.1003-3726.2006.09.007

您当前的位置：

首页 >

文章列表页 >

Investigation of the Free Volume Properties in Nylon6/carbon Nanotubes Nanocomposites by Position Annihilation Technology

更新时间：2022-09-18

- Investigation of the Free Volume Properties in Nylon6/carbon Nanotubes Nanocomposites by Position Annihilation Technology
- Polymer Bulletin Vol. 19, Issue 9, Pages: 56-61(2006)
- 作者机构：
  
  1.武汉大学物理科学与技术学院，武汉　430072
  2.复旦大学先进材料实验室，上海　200433
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2006.09.007
  CLC：
- Published：2006-09，
扫描看全文
Da-hai YU, Bo WANG, Tian-xi LIU. Investigation of the Free Volume Properties in Nylon6/carbon Nanotubes Nanocomposites by Position Annihilation Technology. [J]. Polymer Bulletin 19(9):56-61(2006)
DOI：

Da-hai YU, Bo WANG, Tian-xi LIU. Investigation of the Free Volume Properties in Nylon6/carbon Nanotubes Nanocomposites by Position Annihilation Technology. [J]. Polymer Bulletin 19(9):56-61(2006) DOI： 10.14028/j.cnki.1003-3726.2006.09.007.

摘要

采用正电子湮没寿命谱技术研究了尼龙6/碳纳米管纳米复合材料的自由体积特性。实验结果发现碳纳米管对纳米复合材料的自由体积孔洞尺寸影响甚微

而自由体积孔洞数目和相对自由体积分数均随碳纳米管含量的增加而明显减小。导致这种减小的原因可能来自两方面

其一是由于碳纳米管和基质聚合物间的相互作用限制了高分子链段运动；其二是碳纳米管填充增强了尼龙6基体结晶性能。此外

力学性能研究表明

碳纳米管在复合材料中较均匀的分散和较好的界面接触可以提高材料的力学强度

而自由体积分数的减小则使材料的韧性变差。

Abstract

Effect of carbon nanotube content on the free volume and mechanical properties of nylon6/carbon nanotubes (CNTs) nanocomposites have been investigated by positron annihilation lifetime spectroscopy (PALS). Experimental results found that the variation of free volume hole size is very small

while the concentration of free volume and apparent free volume fraction decrease with increasing the content of CNTs.These decreasing are due to the confining effect on polymer chains in the interfacial layer caused by CNTs

and to the enhancement of crystallinity caused by CNTs filler.The measurements of the mechanical properties revealed that the uniformly dispersion and good interfacial properties between CNTs and polymer matrix can improve the stiffness of material

but the decreasing in free volume fraction will decrease its toughness.

关键词

碳纳米管复合材料自由体积力学性能正电子湮没

Keywords

Carbon nanotube compositesFree volumeMechanic PropertyPositron annihilation

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

WLF Equation—the Special Temperature Dependence of Segment Motion

Related Author

No data

Related Institution

Department of Polymer Science and Engineering, University of Science and Technology of China

⁰