• 文献标题:   RHEOLOGICAL STUDY OF POLY(LACTIC) ACID NANOCOMPOSITES WITH CARBON NANOTUBES AND GRAPHENE ADDITIVES AS A TOOL FOR MATERIALS CHARACTERIZATION FOR 3D PRINTING APPLICATION
  • 文献类型:   Article
  • 作  者:   IVANOVA R, KOTSILKOVA R
  • 作者关键词:   carbon nanotube, graphene nanoplate, poly lactic acid, viscoelastic response, rheological percolation threshold, index of flow, printing parameter
  • 出版物名称:   APPLIED RHEOLOGY
  • ISSN:   1430-6395 EI 1617-8106
  • 通讯作者地址:   Bulgarian Acad Sci
  • 被引频次:   3
  • DOI:   10.3933/ApplRheol-28-54014
  • 出版年:   2018

▎ 摘  要

In the last decades, one of the most critical issues concerning the control on the processing, structure and properties of nanocomposites is related to the dispersion of nanofiller in the polymer matrix and internal interactions resulting in percolation. In this study, we investigate the rheological behavior in oscillatory and steady shear flow of poly(lactic) acid based nanocomposites incorporating 0 - 12 wt% graphene nanoplates (GNP) and multi-walled carbon nanotubes (OH-MWCNT). The effect ofthefiller contents and aspect ratio on the viscosity and viscoelastic response is evaluated. Three rheological techniques are used for estimation of rheological percolation threshold. Due to different aspect ratio and state of dispersion of GNP and MWCNTs the percolation threshold differs significantly for both compositions phi(p)