RT journal article
T1 Fused deposition modelling interfacial and interlayer bonding in PLA post-processed parts
A1 Valerga Puerta, Ana Pilar
A1 Batista Ponce, Moisés
A1 Franck André, Girot
A1 Fernández Vidal, Severo Raúl
A2 Ingeniería Mecánica y Diseño Industrial
K1 Tomography, Additive manufacturing, Polylactic acid, Post-processing, Layer thickness, Chemical treatment, FDM, FFF
K1 Tomography
K1 Additive manufacturing
K1 Polylactic acid
K1 Post-processing
K1 Layer thickness
K1 Chemical treatment
K1 FDM
K1 FFF
AB Purpose – This paper aims to study the interfacial and interlayer bonding of Polylactic acid parts manufactured by fused deposition modelling.Different layer thicknesses are analysed in the manufacture of these pieces and the lack of material associated with this parameter is verified. Theinfluence of the immersion of these parts in different solvents is also studied, as they are increasingly used in the improvement of the surface finish.Tomography results are also obtained in which the increase in density of the parts subjected to these treatments is demonstrated.Design/methodology/approach – The material used in this study is a 1.75-mm diameter polylactic acid (PLA) filament from fused filament fusionworld. Monolayer and multilayer samples have been manufactured. The manufactured parts were subjected to solvent immersion for a period of60 s. The solvents used are chloroform (CHCl3), dichloromethane (CH2Cl2), tetrahydrofuran (C4H8O) and ethyl acetate (C4H8O2). The pieces werethen dried for 48 h. The interior of the samples was evaluated by two techniques: microscopy and tomography.Findings – With this study, it has been observed that the thickness of the layer affects the porosity interfacial to a greater extent than in theinterlayer, causing the increase in porosity as this thickness is increased.The impact of different chemical treatments (immersions in differentsolvents) on the internal quality of the parts has been evaluated. All the solvents analysed soften the surface as they cause the softening of thematerial and its possible redistribution. In the interior, however, they affect in a lighter way. The retention of solvents in the porosity of the pieces isalso checked, especially pronounced in the areas close to the surface. Finally, changes are observed in the density of the pieces, related to the partialcrystallization of the samples.
SN 1355-2546
YR 2019
FD 2019-12-09
LK http://hdl.handle.net/10498/31059
UL http://hdl.handle.net/10498/31059
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026