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A Model for Tensile Strength of Cellulose Nanocrystals Polymer Nanocomposites Publisher



Mohammadpourharatbar A1 ; Boraei SBA1 ; Munir MT2 ; Zare Y1 ; Rhee KY3
Authors
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Authors Affiliations
  1. 1. Biomaterials and Tissue Engineering Research Group, Department of Interdisciplinary Technologies, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
  2. 2. College of Engineering and Technology, American University of the Middle East, Egaila, 54200, Kuwait
  3. 3. Department of Mechanical Engineering (BK21 four), College of Engineering, Kyung Hee University, Yongin, South Korea

Source: Industrial Crops and Products Published:2024


Abstract

Cellulose nanocrystals (CNCs) are rod-shaped, highly crystalline, and possess a high aspect ratio, extensive surface area, and exceptional mechanical properties, making them ideal for reinforcing polymer matrices. However, few models exist for predicting the mechanical properties of CNC-based polymer nanocomposites (PNCs). Existing models often overlook the interphase's role in the mechanical performance of CNC-filled samples, leading to unreliable predictions. This study introduces a straightforward model emphasizing the interphase region and CNC properties to determine the strength of CNC-based system. The model is validated by experimental data and parametric analyses. The results indicate that interphase thickness and strength depending on the interfacial bonds between polymer chains and CNCs along with CNC volume fraction directly control the nanocomposite strength, while a larger CNC diameter diminishes it. Optimal strength in PNCs is achieved with thinner CNCs, thicker and stronger interphase, and higher CNC content. In addition, numerous experimental outputs of various samples show good fitting with model's predictions. © 2024 Elsevier B.V.
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