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Title: 3D Printing Amorphous Polysiloxane Terpolymers via Vat Photopolymerization

Journal Article · · Macromolecular Chemistry and Physics
ORCiD logo [1];  [2];  [3];  [4];  [3];  [5]; ORCiD logo [1]
  1. Department of Chemistry Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
  2. Kansas Polymer Research Center Pittsburg State University Pittsburg KS 66762 USA
  3. Department of Mechanical Engineering Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24061 USA
  4. Honeywell Federal Manufacturing &, Technologies LLC Kansas City MO 64147 USA
  5. Department of Chemistry Pittsburg State University Pittsburg KS 66762 USA

Abstract Photocuring and vat photopolymerization (VP) additive manufacturing (AM) is reported for two families of fully amorphous poly(dimethyl siloxane) (PDMS) terpolymers containing either diphenylsiloxy (DiPhS) or diethylsiloxy (DiEtS) repeating units. A thiol‐functionalized PDMS crosslinker enables rapid crosslinking in air using efficient thiol–ene addition. Differential scanning calorimetry and dynamic mechanical analysis (DMA) confirm the absence of crystallinity for the DiPhS‐containing systems, while DMA shows a rubbery plateau extending to greater than 200 °C for the DiEtS‐containing system. VP‐AM of both photopolymer systems afford well‐defined 3D geometries, including high aspect ratio structures, which demonstrate feasibility of these photopolymers for the 3D printing of unique geometric objects that require elastomeric performance to temperatures as low as −120 °C.

Sponsoring Organization:
USDOE
OSTI ID:
1489887
Journal Information:
Macromolecular Chemistry and Physics, Journal Name: Macromolecular Chemistry and Physics Vol. 220 Journal Issue: 4; ISSN 1022-1352
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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