Polylactide (PLA) Filaments a Biobased Solution for Additive Manufacturing: Correlating Rheology and Thermomechanical Properties with Printing Quality

被引：121

作者：

Cicala, Gianluca ^{[1
,2
]}

Giordano, Davide ^{[1
,2
]}

Tosto, Claudio ^{[1
,2
]}

Filippone, Giovanni ^{[3
,4
]}

Recca, Antonino ^{[1
,2
]}

Blanco, Ignazio ^{[1
,2
]}

机构：

[1] Univ Catania, Dept Civil Engn & Architecture, Dipartimento DICAR, Viale Andrea Doria 6, I-95125 Catania, Italy

[2] UdR Catania Consorzio INSTM, Viale Andrea Doria 6, I-95125 Catania, Italy

[3] Univ Napoli Federico II, Dipartimento Ingn Chim Mat & Prod Ind, Piazzale Tecchio 80, I-80125 Naples, Italy

[4] UdR Napoli Consorzio INSTM, Piazzale Tecchio 80, I-80125 Naples, Italy

来源：

MATERIALS | 2018年 / 11卷 / 07期

关键词：

additive manufacturing; fused deposition modeling; rheology; mechanical properties; PLA; 3D printing; thermal properties; FABRICATION METHOD; THERMAL-BEHAVIOR; POLYMER; ORIENTATION; PARAMETERS; INJECTION; BLENDS; POSSS; ACID);

D O I：

10.3390/ma11071191

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three commercial filaments for Fused Deposition Modeling (FDM) were selected to study the influence of polymer formulation on the printing quality and mechanical properties of FDM specimens. The three filaments were all based on polylactic acid (PLA) as the matrix, and they are sold as PLA filaments. The printing quality was tested by printing one complex shape with overhang features. The marked shear thinning behavior for two filaments was observed by rheology. The filaments were also studied by scanning electron microscopy and thermogravimetric analysis (TGA) to unveil their composition. The filaments with the best printing quality showed the presence of mineral fillers, which explained the melt behavior observed by rheology. The tensile testing confirmed that the filled PLA was the best-performing filament both in terms of printing quality and thermomechanical performance, with a p-value = 0.106 for the tensile modulus, and a p-value = 0.615 for the ultimate tensile strength.

引用

页数：13

共 31 条

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