Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  BABT
País:  Brazil
Título:  Efficiency of Single Site Phase Transfer Catalyst in Free Radical Polymerization of Butyl Methacrylate - A Kinetic Study
Autores:  M,Meena
M. J.,Umapathy
Data:  2016-01-01
Ano:  2016
Palavras-chave:  Single sitephase transfer catalyst 2- Benzoylethyldecyldimethylammonium bromide
Kinetic mechanism Radical polymerization
Resumo:  ABSTRACT The effectiveness of single site phase transfer catalyst- 2- benzoylethyldecyldimethylammonium bromide has been studied with the help of kinetics of free radical polymerization of butyl methacrylate. The radical polymerization was catalysed with single site phase transfer catalyst, initiated by water soluble potassium peroxydisulphate initiator in ethyl acetate / water biphasic media, under inert and unstirred condition at constant temperature, 60±1ºC. The dependence of rate of polymerization on various experimental conditions, different concentrations of monomer, initiator, and phase transfer catalyst was evaluated and effect of temperature as well as solvent polarity was determined. The order of the reaction with respect to monomer, initiator and phase transfer catalyst was found to be 1, 0.5 and 0.5 respectively. It was also observed that a slight increase in rate of polymerization as the polarity of solvents increased. A suitable kinetic mechanism has been suggested as per the investigational conditions. Molecular weight of the polybutyl methacrylate which has been polymerized bysingle site phase transfer catalyst was evaluated using gel permeation chromatographic technique.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000300604
Editor:  Instituto de Tecnologia do Paraná - Tecpar
Relação:  10.1590/1678-4324-2016161045
Formato:  text/html
Fonte:  Brazilian Archives of Biology and Technology v.59 n.spe2 2016
Direitos:  info:eu-repo/semantics/openAccess
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional