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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
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Authors Affiliations
  1. 1. Department of Interdisciplinary Technologies, Biomaterials and Tissue Engineering Research Group, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
  2. 2. Control and Intelligent Processing Center of Excellence, School of Electrical and Computer Engineering, University of Tehran, Tehran, 14395/515, Iran
  3. 3. College of Engineering and Technology, American University of the Middle East, Egaila, 54200, Kuwait
  4. 4. Department of Mechanical Engineering (BK21 four), College of Engineering, Kyung Hee University, Yongin, South Korea

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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