Functional siloxanes with photo-activated, simultaneous chain extension and crosslinking for lithography-based 3D printing

Justin M. Sirrine, Viswanath Meenakshisundaram, Nicholas G. Moon, Philip J. Scott, Ryan J. Mondschein, Tobin F. Weiseman, Christopher B. Williams, Timothy Edward Long

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A novel, poly(dimethyl siloxane)-based photopolymer that exhibits simultaneous linear chain extension and crosslinking was suitable for vat photopolymerization additive manufacturing. Photopolymer compositions consisted of dithiol and diacrylate functional poly(dimethyl siloxane) oligomers, where simultaneous thiol-ene coupling and free radical polymerization provided for linear chain extension and crosslinking, respectively. Compositions possessed low viscosity before printing and the modulus and tensile strain at break of a photocured, higher molecular weight precursor after printing. Photorheology and soxhlet extraction demonstrated highly efficient photocuring, revealing a calculated molecular weight between crosslinks of 12,600 g/mol and gel fractions in excess of 90% while employing significantly lower molecular weight precursors (i.e. < 5300 g/mol). These photocured objects demonstrated a 2× increase in tensile strain at break as compared to a photocured 5300 g/mol PDMS diacrylamide alone. These results are broadly applicable to the advanced manufacturing of objects requiring high elongation at break.

Original languageEnglish
JournalPolymer (United Kingdom)
DOIs
Publication statusAccepted/In press - 2018 Jan 1
Externally publishedYes

Fingerprint

Siloxanes
Crosslinking
Lithography
Printing
Photopolymers
Tensile strain
Molecular weight
3D printers
Photopolymerization
Free radical polymerization
Chemical analysis
Oligomers
Sulfhydryl Compounds
Elongation
Gels
Viscosity

Keywords

  • 3D printing
  • Additive manufacturing
  • Elastomer
  • PDMS
  • Photopolymer
  • Poly(dimethylsiloxane)
  • Stereolithography
  • Thiol-ene
  • Vat photopolymerization

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Sirrine, J. M., Meenakshisundaram, V., Moon, N. G., Scott, P. J., Mondschein, R. J., Weiseman, T. F., ... Long, T. E. (Accepted/In press). Functional siloxanes with photo-activated, simultaneous chain extension and crosslinking for lithography-based 3D printing. Polymer (United Kingdom). https://doi.org/10.1016/j.polymer.2018.02.056

Functional siloxanes with photo-activated, simultaneous chain extension and crosslinking for lithography-based 3D printing. / Sirrine, Justin M.; Meenakshisundaram, Viswanath; Moon, Nicholas G.; Scott, Philip J.; Mondschein, Ryan J.; Weiseman, Tobin F.; Williams, Christopher B.; Long, Timothy Edward.

In: Polymer (United Kingdom), 01.01.2018.

Research output: Contribution to journalArticle

Sirrine, Justin M. ; Meenakshisundaram, Viswanath ; Moon, Nicholas G. ; Scott, Philip J. ; Mondschein, Ryan J. ; Weiseman, Tobin F. ; Williams, Christopher B. ; Long, Timothy Edward. / Functional siloxanes with photo-activated, simultaneous chain extension and crosslinking for lithography-based 3D printing. In: Polymer (United Kingdom). 2018.
@article{c8609eae7376433ca6360a2fd0204b0b,
title = "Functional siloxanes with photo-activated, simultaneous chain extension and crosslinking for lithography-based 3D printing",
abstract = "A novel, poly(dimethyl siloxane)-based photopolymer that exhibits simultaneous linear chain extension and crosslinking was suitable for vat photopolymerization additive manufacturing. Photopolymer compositions consisted of dithiol and diacrylate functional poly(dimethyl siloxane) oligomers, where simultaneous thiol-ene coupling and free radical polymerization provided for linear chain extension and crosslinking, respectively. Compositions possessed low viscosity before printing and the modulus and tensile strain at break of a photocured, higher molecular weight precursor after printing. Photorheology and soxhlet extraction demonstrated highly efficient photocuring, revealing a calculated molecular weight between crosslinks of 12,600 g/mol and gel fractions in excess of 90{\%} while employing significantly lower molecular weight precursors (i.e. < 5300 g/mol). These photocured objects demonstrated a 2× increase in tensile strain at break as compared to a photocured 5300 g/mol PDMS diacrylamide alone. These results are broadly applicable to the advanced manufacturing of objects requiring high elongation at break.",
keywords = "3D printing, Additive manufacturing, Elastomer, PDMS, Photopolymer, Poly(dimethylsiloxane), Stereolithography, Thiol-ene, Vat photopolymerization",
author = "Sirrine, {Justin M.} and Viswanath Meenakshisundaram and Moon, {Nicholas G.} and Scott, {Philip J.} and Mondschein, {Ryan J.} and Weiseman, {Tobin F.} and Williams, {Christopher B.} and Long, {Timothy Edward}",
year = "2018",
month = "1",
day = "1",
doi = "10.1016/j.polymer.2018.02.056",
language = "English",
journal = "Polymer (United Kingdom)",
issn = "0032-3861",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Functional siloxanes with photo-activated, simultaneous chain extension and crosslinking for lithography-based 3D printing

AU - Sirrine, Justin M.

AU - Meenakshisundaram, Viswanath

AU - Moon, Nicholas G.

AU - Scott, Philip J.

AU - Mondschein, Ryan J.

AU - Weiseman, Tobin F.

AU - Williams, Christopher B.

AU - Long, Timothy Edward

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A novel, poly(dimethyl siloxane)-based photopolymer that exhibits simultaneous linear chain extension and crosslinking was suitable for vat photopolymerization additive manufacturing. Photopolymer compositions consisted of dithiol and diacrylate functional poly(dimethyl siloxane) oligomers, where simultaneous thiol-ene coupling and free radical polymerization provided for linear chain extension and crosslinking, respectively. Compositions possessed low viscosity before printing and the modulus and tensile strain at break of a photocured, higher molecular weight precursor after printing. Photorheology and soxhlet extraction demonstrated highly efficient photocuring, revealing a calculated molecular weight between crosslinks of 12,600 g/mol and gel fractions in excess of 90% while employing significantly lower molecular weight precursors (i.e. < 5300 g/mol). These photocured objects demonstrated a 2× increase in tensile strain at break as compared to a photocured 5300 g/mol PDMS diacrylamide alone. These results are broadly applicable to the advanced manufacturing of objects requiring high elongation at break.

AB - A novel, poly(dimethyl siloxane)-based photopolymer that exhibits simultaneous linear chain extension and crosslinking was suitable for vat photopolymerization additive manufacturing. Photopolymer compositions consisted of dithiol and diacrylate functional poly(dimethyl siloxane) oligomers, where simultaneous thiol-ene coupling and free radical polymerization provided for linear chain extension and crosslinking, respectively. Compositions possessed low viscosity before printing and the modulus and tensile strain at break of a photocured, higher molecular weight precursor after printing. Photorheology and soxhlet extraction demonstrated highly efficient photocuring, revealing a calculated molecular weight between crosslinks of 12,600 g/mol and gel fractions in excess of 90% while employing significantly lower molecular weight precursors (i.e. < 5300 g/mol). These photocured objects demonstrated a 2× increase in tensile strain at break as compared to a photocured 5300 g/mol PDMS diacrylamide alone. These results are broadly applicable to the advanced manufacturing of objects requiring high elongation at break.

KW - 3D printing

KW - Additive manufacturing

KW - Elastomer

KW - PDMS

KW - Photopolymer

KW - Poly(dimethylsiloxane)

KW - Stereolithography

KW - Thiol-ene

KW - Vat photopolymerization

UR - http://www.scopus.com/inward/record.url?scp=85042592991&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042592991&partnerID=8YFLogxK

U2 - 10.1016/j.polymer.2018.02.056

DO - 10.1016/j.polymer.2018.02.056

M3 - Article

JO - Polymer (United Kingdom)

JF - Polymer (United Kingdom)

SN - 0032-3861

ER -