Effect of multi-walled carbon nanotubes on the lamellae morphology of polyamide-6

被引：89

作者：

Brosse, Anne-Carine ^{[1
]}

Tence-Girault, Sylvie ^{[1
]}

Piccione, Patrick M. ^{[2
]}

Leibler, Ludwik ^{[1
]}

机构：

[1] ESPCI, Mat Mol & Chim CNRS, UMR 7167, F-75231 Paris 05, France

[2] ARKEMA, Grp Rech Lacq, F-64170 Lacq, France

来源：

POLYMER | 2008年 / 49卷 / 21期

关键词：

Polyamide-6; Carbon nanotubes; Trans-crystalline lamellae;

D O I：

10.1016/j.polymer.2008.08.003

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We show that crystal organization on both micro and nanoscales can be profoundly modified by dispersing carbon nanotubes (CNTs) in polyamide-6 by melt compounding. X-ray diffraction and transmission and scanning electron microscopies all indicate that when CNTs are well dispersed, crystalline spherulites are not present and remarkably crystalline lamellae grow aligning perpendicularly to the surface of the nanotubes. Such an epitaxial growth induced by CNTs during melt processing is particular to polyamide-6 because of crystallographic matching of CNTs and polyamide-6 crystal lattices. Macroscopically this epitaxial nucleation and growth can be detected and quantified by examining the splitting of the exothermic peak in calorimetric (DSC) experiments. Using optical microscopy and image analysis we show that the amount of trans-crystalline epitaxial crystallites increases when CNTs' dispersion quality is improved. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：4680 / 4686

页数：7

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