Nanocomposites of polyhydroxyurethane with Fe3O4 nanoparticles: Synthesis, shape memory and reprocessing properties. (20th October 2021)

• Record Type: Journal Article
• Authors: Li, Lei; Zhao, Bingjie; Wang, Huaming; Gao, Yuan; Hu, Jiawei; Zheng, Sixun
• Is Part Of: Composites science and technology. Volume 215(2021)
• Publication Date: 2021-10-20
• Subjects: Polyhydroxyurethane -- Fe3O4 NPs -- Nanocomposites -- Shape memory -- Reprocessing -- Photothermal effect; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2021.109009
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: In this contribution, we reported a novel synthesis of [4, 4′-bi(1, 3-dioxolane)]-2, 2′-dione via the reaction of meso -erythritol, a bio-mass tetrahydric alcohol with carbon dioxide. This five-membered bicyclic carbonate was used as the precursor of polyhydroxyurethane (PHU). The PHU thermosets were obtained with a trifunctional polyetheramine (Jeffamine T-403) as the curing agent. The PHU thermoset was further modified with Fe3 O4 nanoparticles (NPs) to afford the nanocomposites. To achieve the fine dispersion of Fe3 O4 NPs, the Fe3 O4 NPs were surface-functionalized with poly(2-oxo-1, 3-dioxolane-4-yl)methyl methacrylate (PDOMA) via surface-initiated radical polymerization. Compared with plain PHU, the PHU-Fe3 O4 nanocomposites displayed the improved mechanical properties. In the meantime, the nanocomposites had excellent shape memory and reprocessing properties. The shape memory properties can be triggered with laser irradiation by taking advantage of the photothermal effect of Fe3 O4 NPs. Graphical abstract: Image 1