Polypropylene in the Nanotech Era: A Review on Carbon Nanotube-Driven Property Enhancements in Polymer Nanocomposites
Subject Areas :
Mohadeseh sarlak
1
,
shaghayegh Dabagh alinasab
2
,
Pedram Manafi
3
1 - Mahshahr Campus, Amirkabir University of Technology, P.O. Box 63517-13178, Mahshahr, Iran
2 - Mahshahr Campus, Amirkabir University of Technology, P.O. Box 63517-13178, Mahshahr, Iran
3 - Mahshahr Campus, Amirkabir University of Technology, P.O. Box 63517-13178, Mahshahr, Iran
Keywords: Polypropylene, carbon nanotubes, mechanical properties, electrical properties, nano particle dispertion, melt mixing process,
Abstract :
Polypropylene (PP), as one of the most widely used thermoplastic polymers, has found extensive applications in various industries such as packaging, household appliances, medical devices, automotive components, and textiles due to its low density, cost-effectiveness, chemical stability, moisture resistance, ease of processing, and acceptable mechanical properties. However, certain limitations—such as relatively low mechanical strength, high flammability, and poor thermal and electrical conductivity—pose challenges for its use in advanced engineering applications. To address these deficiencies, the incorporation of nanotechnology, particularly the addition of carbon nanotubes (CNTs), into the PP matrix has emerged as an effective approach. Owing to their cylindrical structure, high aspect ratio, large specific surface area, and unique physical characteristics, CNTs can significantly enhance the physical, mechanical, thermal, and electrical properties of the polymer.
This review article aims to investigate the influence of various parameters—including CNT type (single-walled or multi-walled), optimal weight fraction, surface modification methods, dispersion techniques, and processing methods—on the final properties of PP/CNT nanocomposites. Moreover, the effects of these factors on microstructure, crystallization behavior, Young’s modulus, tensile strength, dimensional stability, conductivity, impact resistance, and rheological performance are discussed. The findings of numerous studies indicate that, through proper optimization of processing conditions and composite formulation, PP/CNT nanocomposites can become highly promising candidates for advanced applications in aerospace, electronics, medical technology, and the automotive industry.
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