A Two-Step Methodology to Study the Influence of Aggregation/Agglomeration of Nanoparticles on Young's Modulus of Polymer Nanocomposites.

A Two-Step Methodology to Study the Influence of Aggregation/Agglomeration of Nanoparticles on Young's Modulus of Polymer Nanocomposites.
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DOI:
10.1186/s11671-017-2386-0
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发表时间:
2017-12-15
影响因子:
--
通讯作者:
Rhee KY
Rhee KY
中科院分区:
材料科学3区
文献类型:
--
作者:
Ma X;Zare Y;Rhee KY

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基于微观力学模型的两步技术,建议确定聚合物纳米复合材料的杨氏模量的聚集/团聚的纳米粒子的影响。纳米复合材料被认为包括纳米颗粒聚集/团聚和有效的基质相。这种方法是检查不同的样品,和重要参数对模量的影响进行了研究。此外,最高和最低水平的预测模量是根据目前的方法计算的。所建议的技术可以正确地预测杨氏模量的样品假设的纳米粒子的聚集/团聚。此外,纳米颗粒的聚集/团聚降低了聚合物纳米复合材料的杨氏模量。它表明,纳米颗粒的高模量是不足以获得高模量的纳米复合材料,和组分的表面化学应进行调整,以防止聚集/团聚和分散的聚合物基体中的纳米尺寸的颗粒。
A two-step technique based on micromechanical models is suggested to determine the influence of aggregated/agglomerated nanoparticles on Young’s modulus of polymer nanocomposites. The nanocomposite is assumed to include nanoparticle aggregation/agglomeration and effective matrix phases. This method is examined for different samples, and the effects of important parameters on the modulus are investigated. Moreover, the highest and the lowest levels of predicted modulus are calculated based on the current methodology. The suggested technique can correctly predict Young’s modulus for the samples assuming the aggregation/agglomeration of nanoparticles. Additionally, the aggregation/agglomeration of nanoparticles decreases Young’s modulus of polymer nanocomposites. It is demonstrated that the high modulus of nanoparticles is not sufficient to obtain a high modulus in nanocomposites, and the surface chemistry of components should be adjusted to prevent aggregation/agglomeration and to disperse nano-sized particles in the polymer matrix.
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