Multi-methacrylated star-shaped, photocurable poly(methyl methacrylate) macromonomers via quasiliving ATRP with suppressed curing shrinkage

Amália Szanka, Györgyi Szarka, B. Iván

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Novel, star-shaped multifunctional poly(methyl methacrylate) (PMMA) macromonomers with well-defined average number of pendant methacrylate groups were synthesized by copolymerizing MMA with 2-hydroxyethyl methacrylate (HEMA) via quasiliving ATRP with a tetrafunctional initiator in methanol at 10 C, followed by methacrylation of the hydroxyl groups of the HEMA units. The resulting tailor-made poly(methyl methacrylate-co-2-methacryloylethyl methacrylate), P(MMA-co-MEMA), multifunctional macromonomers were used as cross-linking agents in photocuring of MMA, a solvent for its own polymer, and thus chemically homogeneous PMMA networks were formed in which the tetrafunctional initiator moiety provides inherent, additional branching points in the resulting cross-linked materials. This approach, even in the presence of relatively low amounts of macromonomers of ∼35-45%, provides sol-free products and up to ∼40% less polymerization shrinkage than that by curing of MMA with a conventional low molecular weight bifunctional methacrylate. These new, unique star-shaped PMMA macromonomers are potential cross-linkers in a variety of solvent-free applications where low curing shrinkage and high conversions are critical requirements, such as in several engineering materials, coatings, dental fillings and restorations, bone cements etc.

Original languageEnglish
Pages (from-to)6073-6077
Number of pages5
JournalPolymer (United Kingdom)
Volume54
Issue number22
DOIs
Publication statusPublished - Oct 18 2013

Fingerprint

Atom transfer radical polymerization
Polymethyl Methacrylate
Polymethyl methacrylates
Stars
Curing
Methacrylates
Bone cement
Dental prostheses
Sols
Bone Cements
Restoration
Methanol
Hydroxyl Radical
Molecular weight
Polymerization
Polymers
Coatings
hydroxyethyl methacrylate

Keywords

  • PMMA macromonomer by ATRP
  • Poly(methyl methacrylate)
  • Reduced photocuring shrinkage with MMA
  • Star-shaped

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Multi-methacrylated star-shaped, photocurable poly(methyl methacrylate) macromonomers via quasiliving ATRP with suppressed curing shrinkage. / Szanka, Amália; Szarka, Györgyi; Iván, B.

In: Polymer (United Kingdom), Vol. 54, No. 22, 18.10.2013, p. 6073-6077.

Research output: Contribution to journalArticle

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