Mechanochemical synthesis of core-shell MWCNTs@acrylic resin nanoparticles with toughening effect on PVC composites
Polyvinyl chloride (PVC) is inherently a brittle material, and enhancing its toughness while preserving its mechanical properties with minimal use of fillers remains a significant research challenge. In this paper, multi-walled carbon nanotubes (MWCNTs) coated with acrylic resin (ACR) were synthesiz...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S014294182500145X |
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| Summary: | Polyvinyl chloride (PVC) is inherently a brittle material, and enhancing its toughness while preserving its mechanical properties with minimal use of fillers remains a significant research challenge. In this paper, multi-walled carbon nanotubes (MWCNTs) coated with acrylic resin (ACR) were synthesized using a mechanochemical approach, and their effectiveness in toughening PVC was investigated. Firstly, methyl methacrylate (MMA) was grafted onto MWCNTs via atomic transfer radical polymerization to improve the compatibility between the MWCNTs and ACR. Subsequently, MWCNTs@ACR core-shell nanoparticles were prepared using a simple, environmentally friendly mechanochemical method. FTIR and TEM analyses confirmed the successful grafting and coating processes. The grafting efficiency of MMA was found to be 13.6 %, while the ACR coating efficiency was 22 %, as determined by TG. MWCNTs@ACR/PVC composites were then fabricated via compression molding, resulting in improved strength, and, notably, enhanced toughness. The impact strength of the composite was 592 % higher than that of PVC and 303 % higher than that of a simple MWCNTs/ACR/PVC blend, while maintaining the composite's strength. This improvement is attributed to the enhanced interfacial interaction between the MWCNTs and the PVC matrix, as well as the excellent dispersion of the MWCNTs within the matrix. |
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| ISSN: | 1873-2348 |