TY - JOUR
T1 - In Situ Time-Resolved X-ray Scattering Study of Isotactic Polypropylene in Additive Manufacturing
AU - Shmueli, Yuval
AU - Lin, Yu Chung
AU - Lee, Sungsik
AU - Zhernenkov, Mikhail
AU - Tannenbaum, Rina
AU - Marom, Gad
AU - Rafailovich, Miriam H.
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/10/9
Y1 - 2019/10/9
N2 - Using a specially designed apparatus, which collects simultaneous temperature and X-ray scattering data, we performed in situ measurements of the filament during MatEx 3D printing. The data show that the MatEx 3D printing extrusion process provides sufficient shear to form shish-kebab structures, which initially nucleate at the filament surface and spread into the filament core. Time-resolved measurements show that the kebab component near the surface relaxes after deposition of the second filament and enhances chain diffusion across the interface. SEM images indicate near complete interfacial merging of the filaments, which results in excellent mechanical properties.
AB - Using a specially designed apparatus, which collects simultaneous temperature and X-ray scattering data, we performed in situ measurements of the filament during MatEx 3D printing. The data show that the MatEx 3D printing extrusion process provides sufficient shear to form shish-kebab structures, which initially nucleate at the filament surface and spread into the filament core. Time-resolved measurements show that the kebab component near the surface relaxes after deposition of the second filament and enhances chain diffusion across the interface. SEM images indicate near complete interfacial merging of the filaments, which results in excellent mechanical properties.
KW - additive manufacturing
KW - crystallinity
KW - in situ X-ray scattering
KW - isotactic polypropylene
KW - shish-kebab
UR - http://www.scopus.com/inward/record.url?scp=85072978788&partnerID=8YFLogxK
U2 - 10.1021/acsami.9b12908
DO - 10.1021/acsami.9b12908
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C2 - 31532992
AN - SCOPUS:85072978788
SN - 1944-8244
VL - 11
SP - 37112
EP - 37120
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 40
ER -
