Investigation of Polyetherimide Melt-Extruded Fibers Modified by Carbon Nanoparticles

Materials

Valentin Svetlichnyi¹  Alexander Bugrov¹  Gleb Vaganov¹  Vladimir Yudin¹  Elena Popova¹  Andrey Didenko¹  Elena Ivan’kova¹  Vladimir Elokhovskiy¹  Igor Kasatkin² 

[1] Institute of Macromolecular Compounds of Russian Academy of Sciences, V.O., Bol’shoy pr. 31, St. Petersburg 199004, Russia;Research Centre for X-ray Diffraction Studies, Saint Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia;

关键词: polyetherimide;    fibers;    melt-extrusion;    structure;    rheology;    VGCF;   

DOI  :  10.3390/ma14237251

来源: DOAJ

【 摘 要 】

The fibers based on thermoplastic partially crystalline polyetherimide R-BAPB modified by vapor grown carbon nanofibers (VGCF) were prepared by melt extrusion, exposed to orientational drawing, and crystallized. All of the samples were examined by scanning electron microscopy, X-ray scattering, and differential scanning calorimetry to study how the carbon nanofiller influences on the internal structure and crystallization behavior of the obtained R-BAPB fibers. The mechanical properties of the composite R-BAPB fibers were also determined. It was found that VGCF nanoparticles introduced into R-BAPB polyimide can act as a nucleating agent that leads, in turn, to significant changes in the composite fibers morphology as well as thermal and mechanical characteristics. VGCF are able to improve an orientation degree of the R-BAPB macromolecules along the fiber direction, accelerate crystallization rate of the polymer, and enhance the fiber stability during crystallization process.

【 授权许可】

Unknown