Premium
Cover Image, Volume 136, Issue 31
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47930
Subject(s) - coalescence (physics) , protein filament , cover (algebra) , polymer science , materials science , composite material , nanotechnology , physics , mechanical engineering , engineering , astrobiology
This figure by Yunlan Su and colleagues demonstrates the variation of the microstructure morphologies of FDM parts with the fillers added in PLA materials. The upper left one is neat PLA part, the upper right one is PLA/talc part, the lower left is PLA/CF part, and the last one is PLA/CF filament. This result highlights the improvement of inter‐filaments coalescence and decrease in the void spaces with the addition of fillers. In neat PLA parts, the bond between adjacent filaments occurs only at the contact points and thus a considerable amount of large voids with diamond shape (ca. 100 μm in side lengths) are clearly observed. The size of voids formed during FDM process decreases down to 10 μm with the presence of fillers. PLA/CF filament shows rough surface morphology, arising from poor interfacial interaction between PLA matrix and carbon fibers. DOI: 10.1002/app.47824