High-Temperature Chemical and Microstructural Transformations of a Nanocomposite Organoceramic

Phillip B. Messersmith*, Samuel I. Stupp

*Corresponding author for this work

Research output: Contribution to journalArticle

105 Scopus citations

Abstract

This paper describes the microstructural and chemical transformations occurring at high temperatures in polymer/inorganic crystal nanocomposites referred to as organoceramics. The organoceramic investigated consists of alternating layers of poly(vinyl alcohol) (PVA) and the layered double hydroxide [Ca2Al(OH)6]+[(OH)3H2O]-, with a structural repeat distance of approximately 18 A. The nanocomposite was heated to various temperatures up to 1000 °C and analyzed using X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and chemical analysis. The layered structure of the organoceramic was found to be stable up to a temperature of 400 °C, whereas the pure layered double hydroxide lacking organic material decomposed at 125 °C. The high thermal stability of the organoceramic nanocomposite may arise from an extensive and strongly bonded interface between organic and inorganic components. Interestingly, the organoceramic heated to 1000 °C transforms into an inorganic solid which has a different phase composition than the layered double hydroxide heated to the same temperature.

Original languageEnglish (US)
Pages (from-to)454-460
Number of pages7
JournalChemistry of Materials
Volume7
Issue number3
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High-Temperature Chemical and Microstructural Transformations of a Nanocomposite Organoceramic'. Together they form a unique fingerprint.

Cite this