Sahu, M and Narasimhan, L and Raichur, AM and Sover, A and Ciobanu, RC and Lucanu, N and Aradoaei, M (2021) Improving fracture toughness of tetrafunctional epoxy with functionalized 2D molybdenum disulfide nanosheets. In: Polymers, 13 (24).
|
PDF
pol_13-24_2021.pdf - Published Version Download (8MB) | Preview |
Abstract
In this work, improved fracture toughness of tetra-functional epoxy polymer was obtained using two-dimensional (2H polytype) molybdenum disulfide (MoS2) nano-platelets as a filler. Simultaneous in-situ exfoliation and functionalization of MoS2 were achieved in the presence of cetyltrimethylammonium bromide (CTAB) via sonication. The aim was to improve the dispersion of MoS2 nanoplatelets in epoxy and enhance the interfacial interaction between nanoplatelets and epoxy matrix. Epoxy nanocomposites with CTAB functionalized MoS2 (f-MoS2) nanoplatelets, ranging in content from 0.1 wt up to 1 wt, were fabricated. Modified MoS2 improved the fracture properties (81) of tetrafunctional epoxy nanocomposites. The flexural strength and compressive strength improved by 64 and 47, respectively, with 0.25 wt loading of f-MoS2 nanoplatelets compared to neat epoxy. The addition of f-MoS2 nanoplatelets enhanced the thermomechanical properties of epoxy. This work demonstrated the potential of organically modified MoS2 nanoplatelets for improving the fracture and thermal behavior of tetrafunctional epoxy nanocomposites. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
| Item Type: | Journal Article |
|---|---|
| Publication: | Polymers |
| Publisher: | MDPI |
| Additional Information: | The copyright for this article belongs to the Author. |
| Keywords: | Compressive strength; Filled polymers; Fracture testing; Fracture toughness; Layered semiconductors; Molybdenum compounds; Nanocomposites; Polymer matrix composites; Transition metals, 2d transition metal dichalcogenides; Dichalcogenides; Epoxy; Epoxy toughening; Exfoliated molybdenum disulphide; Functionalized; Layered nanomaterial; Nanoplatelet; Polymer-matrix composite; Tetrafunctional epoxy, Sulfur compounds |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 12 Jan 2022 05:47 |
| Last Modified: | 12 Jan 2022 05:47 |
| URI: | http://eprints.iisc.ac.in/id/eprint/70932 |
Actions (login required)
 |
View Item |
