1 Ocak 2009 Dergi makalesi Açık Erişim

Edizer, Seda; Sahin, Gorkem; Avci, Duygu

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{
  "@context": "https://schema.org/", 
  "@id": 37179, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Bogazici Univ, Dept Chem, TR-34342 Istanbul, Turkey", 
      "name": "Edizer, Seda"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Bogazici Univ, Dept Chem, TR-34342 Istanbul, Turkey", 
      "name": "Sahin, Gorkem"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Bogazici Univ, Dept Chem, TR-34342 Istanbul, Turkey", 
      "name": "Avci, Duygu"
    }
  ], 
  "datePublished": "2009-01-01", 
  "description": "Five novel phosphonated mono- and dimethacrylate monomers have been synthesized by two different routes. Monomers 1 and 2 were synthesized by reactions of methacryloyl chloride with diethyl (2-hydroxyphenyl) phosphonate or tetraethyl (2,5-dihydroxy-1,4-phenylene) bisphosphonate; monomers 3 and 4 by reactions of alpha-(chloromethyl)acryloylchloride (CMAC) first with dimethyl (2-hydroxyethyl) phosphonate and then with benzoic or formic acids. The reaction of CMAC with two moles of dimethyl (2-hydroxyethyl) phosphonate gave monomer 5. Thermal homopolymerization of monomers 1, 3, 4, and 5 and copolymerization of monomer 1 with methyl methacrylate (MMA) were investigated using azobisisobutyronitrile (AIBN) at 60 degrees C. Glass transition temperatures were observed for poly-1, poly(MMA-co-1) (50:50), poly(MMA-co-1) (90:10), PMMA, poly-3, and poly-5 at 52, 90, 99, 129, 50, and 70 degrees C, respectively. TGA analysis of these polymers indicated formation of char on combustion. Homo- and/or copolymerization behavior of the synthesized monomers with 2,2-bis[4-(2-hydroxy-3-methaeryloyloxy propyloxy) phenyl] propane (Bis-GMA) were investigated with photodifferential scanning calorimetry. The maximum rate of polymerizations decreased in the following order: Bis-GMA similar to 3 > 1 > 4 > 5. The conversions of monomers 1, 3, 4, and 5 (73.9, 85.9, 98.2, and 62.2%) were very high compared with Bis-GMA (40.5%). (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 5737-5746, 2009", 
  "headline": "Development of Reactive Phosphonated Methacrylates", 
  "identifier": 37179, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Development of Reactive Phosphonated Methacrylates", 
  "url": "https://aperta.ulakbim.gov.tr/record/37179"
}