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<p>Incorporation of nanoscale inclusions into super-engineering polymer matrices, such as PEEK, PEI and PSU, presents a&#xa0;complex multiscale physical problem, when the macroscopic properties depend on interfacial phenomena. This work investigates the synthesis of aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) nanoparticles <i>via</i> electric explosion of wire, affecting viscoelasticity, relaxation dynamics, and non-Newtonian flow of polymer melts. A&#xa0;universal protocol is developed to achieve the uniform filler distribution, which serves as a&#xa0;model system to polymer-nanoparticle interactions. Using a&#xa0;combination of rheometry in oscillatory and steady-state shear regimes complemented by structural analysis, quantitative relationships are identified between the filler concentration, network topology, and fundamental rheological response of the melts. The paper provides a&#xa0;physical basis for understanding and predicting processability of such nanocomposites under non-equilibrium conditions, similar to those observed in additive manufacturing.</p>

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Influence of nanodispersed aluminum oxide on rheological and technological properties of super-engineering polymers

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • M. Krinitsyn,
  • N. Svarovskaya,
  • K. Suliz,
  • A. Pervikov,
  • M. Lerner

摘要

Incorporation of nanoscale inclusions into super-engineering polymer matrices, such as PEEK, PEI and PSU, presents a complex multiscale physical problem, when the macroscopic properties depend on interfacial phenomena. This work investigates the synthesis of aluminum oxide (Al2O3) nanoparticles via electric explosion of wire, affecting viscoelasticity, relaxation dynamics, and non-Newtonian flow of polymer melts. A universal protocol is developed to achieve the uniform filler distribution, which serves as a model system to polymer-nanoparticle interactions. Using a combination of rheometry in oscillatory and steady-state shear regimes complemented by structural analysis, quantitative relationships are identified between the filler concentration, network topology, and fundamental rheological response of the melts. The paper provides a physical basis for understanding and predicting processability of such nanocomposites under non-equilibrium conditions, similar to those observed in additive manufacturing.