TY - JOUR
T1 - Study of thermal and rheological properties of PLA loaded with carbon and halloysite nanotubes for additive manufacturing
AU - Cobos, Christian Mauricio
AU - Garzón, Luis
AU - López Martinez, Juan
AU - Fenollar, Octavio
AU - Ferrandiz, Santiago
PY - 2019/5/13
Y1 - 2019/5/13
N2 - Purpose: This paper aims to propose using polylactic acid (PLA) as an alternative to nanocomposites in additive manufacturing processes in fusion deposition modelling (FDM) systems and describe its thermal and rheological conditions with multi-wall carbon nanotube (PLA/MWCNT) and halloysite nanotube (PLA/HNT) composites for possible applications in additive manufacturing processes. Design/methodology/approach: PLA/MWCNTs and PLA/HNTs were obtained through fusion in a co-rotating twin-screw extruder. PLA was mixed with different percentages of MWCNTs and HNTs at concentrations of 0.5 Wt.%, 0.75 Wt.% and 1 Wt.%. Differential scanning calorimetry (DSC) and capillary rheometry were used to characterise these products, together with an analysis of the melt flow index (MFI). Findings: The DSC data revealed that the nanocomposites had a glass transition temperature T
g = 65 ± 2°C and a melting temperature T
m = 169 ± 1°C. The crystallisation temperature of PLA/MWCNTs and PLA/HNTs was between 107 ± 2°C and 129°C, respectively. The viscosity data of PLA/MWCNTs and PLA/HNTs obtained by capillary rheometry indicated that the viscosity of the materials is the same as that of neat PLA. These results were confirmed by the higher fluidity index in the MFI analysis. Originality/value: This paper presents an alternative for the applications of nanocomposites in additive manufacturing processes in FDM systems.
AB - Purpose: This paper aims to propose using polylactic acid (PLA) as an alternative to nanocomposites in additive manufacturing processes in fusion deposition modelling (FDM) systems and describe its thermal and rheological conditions with multi-wall carbon nanotube (PLA/MWCNT) and halloysite nanotube (PLA/HNT) composites for possible applications in additive manufacturing processes. Design/methodology/approach: PLA/MWCNTs and PLA/HNTs were obtained through fusion in a co-rotating twin-screw extruder. PLA was mixed with different percentages of MWCNTs and HNTs at concentrations of 0.5 Wt.%, 0.75 Wt.% and 1 Wt.%. Differential scanning calorimetry (DSC) and capillary rheometry were used to characterise these products, together with an analysis of the melt flow index (MFI). Findings: The DSC data revealed that the nanocomposites had a glass transition temperature T
g = 65 ± 2°C and a melting temperature T
m = 169 ± 1°C. The crystallisation temperature of PLA/MWCNTs and PLA/HNTs was between 107 ± 2°C and 129°C, respectively. The viscosity data of PLA/MWCNTs and PLA/HNTs obtained by capillary rheometry indicated that the viscosity of the materials is the same as that of neat PLA. These results were confirmed by the higher fluidity index in the MFI analysis. Originality/value: This paper presents an alternative for the applications of nanocomposites in additive manufacturing processes in FDM systems.
KW - 3D printing
KW - Additive manufacturing
KW - Carbon nanotubes
KW - Halloysites nanotubes
KW - Rheological
KW - Thermal testing
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UR - http://www.mendeley.com/research/study-thermal-rheological-properties-pla-loaded-carbon-halloysite-nanotubes-additive-manufacturing
U2 - 10.1108/RPJ-11-2018-0289
DO - 10.1108/RPJ-11-2018-0289
M3 - Article
SN - 1355-2546
VL - 25
SP - 738
EP - 743
JO - Rapid Prototyping Journal
JF - Rapid Prototyping Journal
IS - 4
ER -