Structure and infrared emissivity of silicon-containing polyimide/BaTiO{sub 3} nanocomposite films

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2004.07.022· OSTI ID:20653406

Baoping, Lin ^[1]; Hongjian, Liu ^[1]; Shixian, Zhang ^[1]; Chunwei, Yuan ^[2]

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1. Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096 (China)
2. Key Laboratory of Molecular and Biomolecular Electronics of Ministry of Education, Nanjing 210096 (China)

Silicon-containing polyimide/BaTiO{sub 3} nanocomposite films were prepared by the direct mixing of silicon-containing polyamic acid and BaTiO{sub 3} nanoparticles under ultrasonic wave irradiation, followed with thermal imidization. Structure and thermal properties were measured with FTIR, XPS, SEM, DSC and TGA. The results showed that the compatibility of BaTiO{sub 3} and a polyimide might be improved by the introduction of dimethylsilylene groups into the backbone of a polyimide; and BaTiO{sub 3} nanoparticles in the nanocomposites tended to form clusters. The clusters coalesced into a more uniform structure at a higher BaTiO{sub 3} filling than at a lower one.The interfacial interaction between BaTiO{sub 3} and the silicon-containing polyimide resulted in the increase of the glass transition and the thermal decomposition temperature. It was found that the nanocomposites exhibited lower infrared emissivity value than the pure polyimide and the magnitude of infrared emissivity value was related to the content of BaTiO{sub 3} in the nanocomposites.

• OSTI ID: 20653406
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 10 Vol. 177; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CALORIMETRY
COMPATIBILITY
COMPOSITE MATERIALS
EMISSIVITY
FILMS
FOURIER TRANSFORMATION
INFRARED SPECTRA
IRRADIATION
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SILICON
THERMAL GRAVIMETRIC ANALYSIS
THERMODYNAMIC PROPERTIES
TITANATES
ULTRASONIC WAVES
X-RAY PHOTOELECTRON SPECTROSCOPY