Development and Fabrication of 3D-Printed Foam-Filled PLA/PCL Lattice Structures With Tunable Shape Memory and Mechanical Performance

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dc.authorid0000-0002-2683-560X
dc.contributor.authorEryildiz, Meltem
dc.date.accessioned2026-01-31T15:08:10Z
dc.date.available2026-01-31T15:08:10Z
dc.date.issued2026
dc.departmentİstanbul Beykent Üniversitesi
dc.description.abstractThis study presents the development of foam-filled polylactic acid (PLA)/polycaprolactone (PCL) lattice structures fabricated via fused deposition modeling (FDM) to achieve tunable mechanical strength and thermal shape memory performance. Three lattice geometries (hexagonal, triangular, grid) were produced at 0%, 10%, and 20% infill densities and subsequently filled with polyurethane (PUR) foam. The printed lattice provided geometric stability, while the foam core enhanced damping, energy absorption, and recovery support. Mechanical tests showed that higher infill densities, particularly with hexagonal patterns, significantly increased flexural strength and impact resistance through improved foam confinement and load transfer. Shape memory tests revealed consistently high fixation ratios (> 91%) but recovery ratios ranging from 33% to 89%, with low density exhibiting faster and more complete recovery due to greater matrix mobility. PUR foam played a passive stabilizing role, aiding recovery in open architectures but slightly constraining it in dense designs. The results demonstrate that careful tuning of lattice geometry and infill density enables the design of lightweight, multifunctional composites suitable for reusable protective gear, energy-absorbing components, and thermally responsive adaptive systems.
dc.identifier.doi10.1002/pen.70243
dc.identifier.endpage607
dc.identifier.issn0032-3888
dc.identifier.issn1548-2634
dc.identifier.issue1
dc.identifier.scopus2-s2.0-105021263139
dc.identifier.scopusqualityQ1
dc.identifier.startpage595
dc.identifier.urihttps://doi.org./10.1002/pen.70243
dc.identifier.urihttps://hdl.handle.net/20.500.12662/10605
dc.identifier.volume66
dc.identifier.wosWOS:001609647100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofPolymer Engineering And Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260128
dc.subjectenergy-absorbing hybrid materials
dc.subjectflexural and impact properties
dc.subjectfoam-filled 3D-printed lattice structures
dc.subjectfused deposition modeling (FDM)
dc.subjectPLA/PCL blend composites
dc.subjectthermal shape memory performance
dc.titleDevelopment and Fabrication of 3D-Printed Foam-Filled PLA/PCL Lattice Structures With Tunable Shape Memory and Mechanical Performance
dc.typeArticle

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