Modeling approach for tensile strength of interphase layers in polymer nanocomposites

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• 作者：Yasser Zare ; ^{y.zare@aut.ac.ir" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Polymer nanocomposites ; Interphase layers ; Mechanical properties
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：1 June 2016
• 年：2016
• 卷：471
• 期：Complete
• 页码：89-93
• 全文大小：1255 K

文摘

At the first step, this paper describes a developed model for tensile strength of interphase layers (σ_k) in polymer nanocomposites. The “σ_k” is expressed as linear, exponential and power functions of the distance between nanoparticles and polymer matrix (x_k). Afterwards, the predictions of these equations at the central layer of interphase (the average strength) are compared to the calculations of interphase strength (σ_i) by several micromechanical models including the developed Leidner-Woodhams and Pukanszky models to choose the best equation which expresses “σ_k”.

The calculations are carried out for several reported samples. The equation which expresses the “σ_k” as a power function of “x_k” shows the best results compared to others. Also, its predictions significantly depend to an exponent as “Z” which demonstrates the level of interphase properties. According to the chosen equation, the “σ_m” and “σ_p” play positive roles in “σ_i” predictions at low “Z” value, but a high “Z” eliminates the effect of “σ_m” on the tensile strength of interphase layers.