期刊
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
卷 41, 期 2, 页码 -出版社
A V S AMER INST PHYSICS
DOI: 10.1116/6.0002397
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3D printed ABS and PVA structures were infiltrated with Al2O3 using an ALD process, resulting in a change in their physical properties. The glass transition temperature (T-g) of the polymers was determined using DSC, showing a change of about 9 and 27 degrees C for ABS and PVA, respectively. The amount of infiltration and T-g were affected by growing patterns, polymer composition, and surface coatings.
3D printed acrylonitrile butadiene styrene (ABS) and polyvinyl alcohol (PVA) structures were infiltrated by alumina (Al2O3) using a trimethylaluminum(III) and water ALD process at 130 and 80 degrees C, respectively, to alter their physical properties. Differential scanning calorimetry was used to determine the glass transition temperature (T-g) of the polymers' pre- and post-deposition after varying the number of ALD cycles, resulting in a change of similar to 9 and similar to 27 degrees C for ABS and PVA, respectively. After one heat cycle, the postdeposition T-g reverted back to its predisposition point indicating reversibility of the deposition effects are possible. Optimal growing patterns, polymer composition, and inhibiting surface coatings-seen by energy-dispersive x-ray spectroscopy mapping-affected the amount of infiltration possible within the polymer substrate and, in turn, T-g. The results achieved provide guidelines to altering the physical and thermal properties of 3D printed polymer architectures.
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