Characteristics of polyvinylpyrrolidone-layered silicate nanocomposites prepared by attrition ball milling

Chong Min Koo, Hyeong Taek Ham, Min Ho Choi, Sang Ouk Kim, I. Jae Chung

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)


Polyvinylpyrrolidone (PVP)/sodium montmorillonite (MMT) nanocomposites prepared via the solution intercalation method were investigated by UV/vis, SEM, X-ray diffraction, TEM, FT-IR and PLM (polarized light microscopy). PVP/MMT nanocomposites show exfoliation below 20 wt% MMT and intercalation above this concentration. Nanocomposites retain good optical clarity and increased thermal resistance with MMT content. The compatibility between PVP and MMT and their enhanced properties may be explained by hydrogen bonding interactions. In addition, the nanocomposites prepared under more rigorous mixing conditions show better transparency because the smaller particle sizes are induced. In addition, the study on optically clear PVP/MMT suspensions helps one to understand how optical anisotropy of MMT is affected by the existence of polymer in aqueous solution.

Original languageEnglish
Pages (from-to)681-689
Number of pages9
Issue number3
Publication statusPublished - 2002 Dec 20
Externally publishedYes


  • Hydrogen bonding
  • Optical anisotropy
  • Polyvinylpyrrolidone nanocomposites

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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