TY - JOUR
T1 - 3D Printing Amorphous Polysiloxane Terpolymers via Vat Photopolymerization
AU - Sirrine, Justin M.
AU - Zlatanic, Alisa
AU - Meenakshisundaram, Viswanath
AU - Messman, Jamie M.
AU - Williams, Christopher B.
AU - Dvornic, Petar R.
AU - Long, Timothy Edward
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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.
AB - 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.
KW - 3D printing
KW - elastomers
KW - poly(dimethyl siloxane)
KW - siloxane terpolymers
KW - thiol–ene reaction
KW - vat photopolymerization
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U2 - 10.1002/macp.201800425
DO - 10.1002/macp.201800425
M3 - Article
AN - SCOPUS:85059647201
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
SN - 1022-1352
M1 - 1800425
ER -