Study of interfacial adhesion between nickel-titanium shape memory alloy and a polymer matrix by laser surface pattern

0537679 - FZÚ 2021 RIV CH eng J - Journal Article
Samal, Sneha Manjaree - Tyc, Ondřej - Heller, Luděk - Šittner, Petr - Malik, M. - Poddar, P. - Catauro, M. - Blanco, I.
Study of interfacial adhesion between nickel-titanium shape memory alloy and a polymer matrix by laser surface pattern.
Applied Sciences-Basel. Roč. 10, č. 6 (2020), s. 1-12, č. článku 2172. E-ISSN 2076-3417
R&D Projects: GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : adhesion * NiTi plate * polymer * PMMA/NiTi composites * mechanical properties * surface features
OECD category: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
Impact factor: 2.679, year: 2020
Method of publishing: Open access

The aimof this article isto investigate the interfacialadhesion of Ni-Ti shape memory alloy with a polymer matrix of Poly (methyl methacrylate) (PMMA). The surface pattern on Ni-Ti plates was channeled by a solid state laser machine. The laser machine allows for creating channels on the Ni-Ti surface for infiltration of the PMMA matrix, which could be attached as an intra-surface locking pattern to the Ni-Ti surface. The influence of the PMMA matrix on the surface of the NiTi plate was evaluated by thermomechanical analysis (TMA) and dynamic mechanical analysis (DMA). The surface characterization was carried out by an optical microscope on the PMMA/NiTi composite after mechanical testing. During mechanical testing, the polymer displays the multiple cracks in the longitudinal direction that result in slipping and fracture. TMA and DMA analyses were performed on the Ni-Ti- and PMMA-coated Ni-Ti ribbon to observe elasticity and the storage modulus for bothsamples. Betteradhesionthan80%wasobservedintheNi-Tisurface,inthelasersurfacepattern, incomparisontothefreeplainsurface. However,thepolymeractsasmechanicalbackingthatcaused a reduction in the shape-memory properties of the composite material.
Permanent Link: http://hdl.handle.net/11104/0315542