Influence methods of preparation on the thermal stability of polyimide/silica dust

Polyimide/silica dust composites (PI/SD) were prepared with different SD NPs content (0,2,4,6 and 8) wt.% by using in situ polymerization and solution mixing methods. The prepared PI/SD was characterized by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). The FT-...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2022-08, Vol.79 (8), p.6617-6626
Main Authors: Kareem, Aseel A., Rasheed, Hussein Kh, Nasir, Eman M.
Format: Article
Language:English
Subjects:
Absorption spectra
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Dust
Fourier transforms
Glass transition temperature
Heat conductivity
Infrared analysis
Infrared spectroscopy
Mechanical properties
Methods
Moisture absorption
Nanoparticles
Organic Chemistry
Original Paper
Particulate composites
Physical Chemistry
Polyimide resins
Polymer Sciences
Polymerization
Polymers
Silica dust
Silicon dioxide
Soft and Granular Matter
Thermal conductivity
Thermal stability
Thermogravimetric analysis
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Summary:Polyimide/silica dust composites (PI/SD) were prepared with different SD NPs content (0,2,4,6 and 8) wt.% by using in situ polymerization and solution mixing methods. The prepared PI/SD was characterized by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). The FT-IR results showed that the characteristic absorption bands of C = O stretching of the imide group are clearly visible near 1740 cm −1 . The strongest characteristic vibration bands of Si–O–Si hydrolyzed from silica were also observed in the range (689–1156) cm −1 . The TGA results indicated that the thermal stability of prepared PI/SD was increased with an increase in SD content, this effect is clearly seen in the samples prepared by in situ polymerization method, and the glass transition temperature of the PI/SD NPs composites was in the range of (276–334) °C, i.e., higher than the pure PI 221 °C. The thermal conductivity and hardness for PI/8 wt.% SD composites prepared by in situ polymerization were increased from (0.5 to 1.025) W/m.K and from (100 to 412) MPa when compared with pure PI.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-021-03830-7