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：137

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

页码：9 / 16

页数：8

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