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Photopolymerization of poly(melamine‐ co ‐formaldehyde) acrylate for dental restorative resins
Author(s) -
Nie Jun,
Rabek Jan F,
Lindén LarsÅke
Publication year - 1999
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199902)48:2<129::aid-pi117>3.0.co;2-4
Subject(s) - photopolymer , polymerization , acrylate , melamine , materials science , monomer , shrinkage , dental composite , filler (materials) , polymer chemistry , melamine resin , formaldehyde , acrylate polymer , composite number , composite material , chemical engineering , polymer , chemistry , organic chemistry , coating , engineering
This paper describes the investigation of photoinitiated polymerization of poly(melamine‐ co ‐formaldehyde) acrylate (PMFA) by camphorquinone (CQ) and amines (AMH) by visible light (λ>400 nm). It was shown that as the concentration of CQ and/or AMH increases, the rate of polymerization reaches a maximum and then decreases. The double bond conversion of PMFA was 20–35%, whereas monomer conversion was 90–96%, depending on the polymerization conditions. Addition of inorganic filler up to 70 wt% did not significantly influence the polymerization kinetics. The final hardness of the photocured samples (with 70 wt% filler) was about half that found in a commercial dental restorative composite. The shrinkage of a composite with 70 wt% filler was 2.12%. Dental formulations based on photocuring of PFMA can be considered for clinical applications, after biological and toxicological evaluation. © 1999 Society of Chemical Industry