Premium
3D Printing Amorphous Polysiloxane Terpolymers via Vat Photopolymerization
Author(s) -
Sirrine Justin M.,
Zlatanic Alisa,
Meenakshisundaram Viswanath,
Messman Jamie M.,
Williams Christopher B.,
Dvornic Petar R.,
Long Timothy E.
Publication year - 2019
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201800425
Subject(s) - photopolymer , elastomer , crystallinity , differential scanning calorimetry , amorphous solid , materials science , siloxane , polymer chemistry , polymer , chemical engineering , dynamic mechanical analysis , composite material , polymerization , chemistry , organic chemistry , physics , engineering , thermodynamics
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.