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Amphiphilic, thixotropic additives for extrusion-based 3D printing of silica-reinforced silicone by Jakkrit Suriboot; Alec C. Marmo; Bryan Khai D. Ngo; Aman Nigam; Denisse Ortiz-Acosta; Bruce L. Tai; Melissa A. Grunlan is a Materials Science article available to read on EtoBox.
What is Amphiphilic, thixotropic additives for extrusion-based 3D printing of silica-reinforced silicone about?
The ability to utilize extrusion-based, direct ink write (DIW) 3D printing to create silica-reinforced silicones with complex structures could expand their utility in industrial and biomedical applications. Sylgard 184, a common Pt-cure silicone, lacks the thixotropic behavior necessary for effective printing and its hydrophobicity renders cured structures susceptible to biofouling. Herein, we evaluated the efficacy of various PEO-silane amphiphiles (PEO-SAs) as thixotropic and surface modifying additives in Sylgard 184. Eight amphiphilic PEO-SAs of varying architecture (e.g. linear, star, and graft), crosslinkability, and PEO content were evaluated. Modified formulations were also prepared with additional amounts of silica filler, both hexamethyldisilazane (HMDS)-treated and dimethyldichlorosilane (DiMeDi)-treated types. Numerous PEO-SA modified silicone formulations demonstrated effective water-driven surface hydrophilicity that was generally diminished with the addition of HMDS-treated silica filler. While increased yield stress was observed for PEO-SA modified silicones with added HMDS-treated filler, none achieved the initial target for 3D printing (>1000 Pa). Only the formula
Who reads Amphiphilic, thixotropic additives for extrusion-based 3D printing of silica-reinforced silicone?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Jakkrit Suriboot; Alec C. Marmo; Bryan Khai D. Ngo; Aman Nigam; Denisse Ortiz-Acosta; Bruce L. Tai; Melissa A. Grunlan
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2021
- Language
- EN
- Field
- Materials Science (Physical Sciences)