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

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Abstract

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.

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Authors and Affiliations

  1. Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq

    Aseel A. Kareem, Hussein Kh. Rasheed & Eman M. Nasir

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  1. Aseel A. Kareem
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  2. Hussein Kh. Rasheed
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  3. Eman M. Nasir
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Correspondence to Aseel A. Kareem.

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Kareem, A.A., Rasheed, H.K. & Nasir, E.M. Influence methods of preparation on the thermal stability of polyimide/silica dust. Polym. Bull. 79, 6617–6626 (2022). https://doi.org/10.1007/s00289-021-03830-7

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  • DOI: https://doi.org/10.1007/s00289-021-03830-7

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