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A Model for Predicting Tensile Modulus of Polymer Nanocomposites Reinforced With Cellulose Nanocrystals Publisher



Mohammadpourharatbar A1 ; Bouchani Z2 ; Zare Y1 ; Gharib N3 ; Rhee KY4
Authors

Source: Cellulose Published:2023


Abstract

In this paper, the Young’s modulus of composites containing cellulose nanocrystals (CNCs) is predicted using a simple model. The significance of interphase and CNC dimensions on the nanocomposite modulus was analyzed using the developed model, which was validated using experimental data from a variety of samples. The modulus predictions were in accordance with the measured data, and CNC volume fraction of 0.02 increased the modulus of the system by 65%. Moreover, a nanocomposite that included thinner and longer CNCs had a greater modulus, and the nanocomposite modulus increased by 29.9% when the interphase thickness was 30 nm. Additionally, the modulus of the nanocomposite increased by 35.3% at an interphase modulus of 10 GPa, whereas the modulus of the system increased by 38.4% at an interphase modulus of 60 GPa. Therefore, a thicker and stiffer interphase caused a higher modulus for nanocomposites. Generally, the interphase features and CNC length directly controlled the stiffness of the system, whereas the CNC diameter had an opposite effect. © 2023, The Author(s), under exclusive licence to Springer Nature B.V.
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