Preparation of poly(methyl methacrylate)/clay nanocomposites using supercritical fluid process

Hyun Taek Jung, Sang Soo Lee, Min Park, Heesuk Kim, Soonho Lim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Organoclay-based poly(methyl methacrylate) (PMMA) nanocomposites were prepared using a chlorodifluoromethane (HCFC-22) solvent by the supercritical fluid process. Mechanical properties, transmission electron microscopy (TEM), wide angle X-ray diffraction (WAXD), and thermal stability were characterized for PMMA nanocomposites. Commercially available organoclays (ASM clay) treated with alkyl ammonium salt, such as Cloisite® 15A and Cloisite ® 30B, were compared with lab-made organoclays (FSM clay); specifically, sodium montmorillonite modified with a fluorinated surfactant. Ultrasonic treatment in the preparation of FSM clay was also investigated. Since the fluorinated tail in FSM clay is compatible with HCFC-22, FSM clay processed with ultrasonication showed partial exfoliation for PMMA/FSM clay nanocomposite, resulting in better thermal and mechanical properties and higher glass transition temperature as opposed to the intercalation morphologies for PMMA/ASM clay.

Original languageEnglish
Pages (from-to)565-572
Number of pages8
JournalComposite Interfaces
Volume19
Issue number9
DOIs
Publication statusPublished - 2012

Keywords

  • Clay
  • Fluorinated surfactant
  • HCFC-22
  • PMMA
  • Supercritical

ASJC Scopus subject areas

  • Ceramics and Composites
  • Physics and Astronomy(all)
  • Surfaces, Coatings and Films

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