Crystallization, melting and morphology of PEO in PEO/MWNT-g-PMMA blends

Yeong Tarng Shieh, Gin Lung Liu, Kuo Chu Hwang, Chia Chun Chen

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50 Citations (Scopus)

Abstract

The dispersion of multi-walled carbon nanotubes (MWNTs) in crystalline poly(ethylene oxide) (PEO) is significantly improved by grafting with poly(methyl methacrylate) (PMMA) on surface of MWNTs via emulsion reactions. The synthesized MWNTs-g-PMMA is soluble in solvents that can dissolve PMMA and is well dispersed in PEO. The effects of the MWNTs-g-PMMA on PEO crystallization and its use as a reinforcement for PEO are investigated using DMA, DSC, POM, and SAXS. DMA data show that the PEO/MWNTs-g-PMMA blends containing up to 30 wt% MWNTs-g-PMMA are compatible. DSC data show the crystallization of PEO is enhanced by the MWNTs-g-PMMA, accompanying with a decreased thickness of crystal layers and an increased thickness of amorphous layers of the PEO lamellar stacks, in combination with SAXS data.

Original languageEnglish
Pages (from-to)10945-10951
Number of pages7
JournalPolymer
Volume46
Issue number24
DOIs
Publication statusPublished - 2005 Nov 21

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Keywords

  • Carbon nanotubes
  • Crystallization
  • Polymer composites

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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