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Title: Potentials with small-angle neutron scattering technique for understanding structure-property relation of 3D-printed materials: SANS Investigation of 3D-Printed Materials

Journal Article · · Polymer Engineering and Science
DOI: https://doi.org/10.1002/pen.24960 · OSTI ID:1506798

Carbon fiber (CF)-embedded acrylonitrile butadiene styrene polymer composites printed on the large-scale printer at Oak Ridge National Laboratory were investigated by small-angle neutron scattering to correlate the microstructure of the composites with their mechanical strength. The microstructure of the polymer domains and the alignment of CF were characterized across the interfaces among layers of the hot-melt extruded material and were compared with CF-free ABS. The small-angle neutron scattering data show that the CF-containing material displays strong anisotropic scatterings indicating molecular alignment along the printing direction that is not present in the CF-free ABS. Scattering data analysis across the interfacial layer revealed enhanced molecular alignment along the printing direction near the boundaries and inhomogeneous size distribution of polymer domains upon the addition of CF. We attribute the compromised strength across interfacial layers from CF-containing material to this inhomogeneous size distribution which inhibits effective lateral interaction between layers.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1506798
Journal Information:
Polymer Engineering and Science, Journal Name: Polymer Engineering and Science Journal Issue: s2 Vol. 59; ISSN 0032-3888
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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