Can the melt flow index be used to predict the success of fused deposition modelling of commercial poly(lactic acid) filaments into 3D printed materials?

被引：130
作者：
Wang, Sisi [1 ]
Capoen, Lore [1 ]
D'hooge, Dagmar R. [2 ,3 ]
Cardon, Ludwig [1 ]
机构：
[1] Univ Ghent, Dept Mat Text & Chem Engn, CPMT, Technol Pk 915, B-9052 Zwijnaarde, Belgium
[2] Univ Ghent, Dept Mat Text & Chem Engn, CTSE, Zwijnaarde, Belgium
[3] Univ Ghent, Dept Mat Text & Chem Engn, LCT, Zwijnaarde, Belgium
来源：
PLASTICS RUBBER AND COMPOSITES | 2018年 / 47卷 / 01期
关键词：
Fused deposition modelling; poly(lactic acid); melt flow index; micromorphology; printability; RHEOLOGICAL PROPERTIES; BLENDS; PLA; BEHAVIOR; COMPOSITE;
D O I：
10.1080/14658011.2017.1397308
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The melt flow index (MFI) of seven commercial poly(lactic acid) (PLA) grades is investigated in view of 3D printing quality. A threshold value of 10 g (10 min)(-1) (2.16 kg; ISO 1133) is put forward for a successful printing (190-220 degrees C), enabling a fast and practical screening of PLA materials. It is however shown that a sole focus on MFI is insufficient, as the plasticiser type and crystallinity also play a role after the polymer melt deposition. The latter is supported by scanning electron micromorphology and differential scanning calorimetry measurements. In particular, blending with poly(hydroxyl butyrate) (PHB; 20 m%) allows to control both MFI and crystallinity without the need for annealing.
引用
收藏
页码：9 / 16
页数：8
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