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2005 | 3 | 1 | 10-27
Tytuł artykułu

Polymer-Titanium hybrids obtained by radical polymerization and Sol-Gel process

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The possibility to prepare hybrids made by poly(vinyl acetate) (PVAc), poly(methyl methacrylate) (PMMA) and/or poly(ethyl acrylate) (PEtA) with TiO2 was studied. The processes of polymer formation-radical polymerization and sol-gel process for inorganic network -were achieved simultaneously. Due to a high reactivity of titanium isopropoxide (TIP) in the sol-gel process, a complexant comonomer, allyl acetoacetate (AlAcAc), was used. Covalent bonds between polymer and inorganic chains were obtained by addition of trialkoxysilane derivates with vinyl (VTES) or methacryloyl (MPTS) groups. The presence of TIP inhibits the radical polymerization of vinyl acetate (VAc). The PVAc-TiO2 hybrids were produced by the sol-gel process of TIP in the presence of pre-obtained PVAc. Except for VTES and MPTS, trialkoxysilane derivates with methyl (MeTES), octyl (OTES) and phenyl (PTES) groups were used. The thermal stability of hybrids is strongly affected by TiO2 presence and by the type of trialkoxysilane derivates. The thermal stability of PVAc hybrids decreases in the presence of TiO2 inorganic network. The glass transition temperature of polymers increases in the presence of the inorganic network.
Wydawca

Czasopismo
Rocznik
Tom
3
Numer
1
Strony
10-27
Opis fizyczny
Daty
wydano
2005-03-01
online
2005-03-01
Twórcy
autor
  • Polymer Department, National R-D Institute for Chemistry and Petrochemistry, Splaiul Independentei 202, P.O. Box 15/159, Bucharest, sect. 6, Romania, ddonescu@chimfiz.icf.ro
autor
  • Polymer Department, National R-D Institute for Chemistry and Petrochemistry, Splaiul Independentei 202, P.O. Box 15/159, Bucharest, sect. 6, Romania
  • Polymer Department, National R-D Institute for Chemistry and Petrochemistry, Splaiul Independentei 202, P.O. Box 15/159, Bucharest, sect. 6, Romania
  • Polymer Department, National R-D Institute for Chemistry and Petrochemistry, Splaiul Independentei 202, P.O. Box 15/159, Bucharest, sect. 6, Romania
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_BF02476234
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