%0 Journal Article
%T Avalia£¿£¿o de blendas de PAN/pol¨ªmeros biodegrad¨¢veis por calorimetria
%A Fleming
%A R.R.
%A Pardini
%A L.C.
%A Alves
%A N.P.
%A Brito Junior
%A C.A.R.
%A Sales
%A R.C.M.
%A Marques
%A V.G.
%J Mat¨¦ria (Rio de Janeiro)
%D 2012
%I Rede Latino-Americana de Materiais - Latin-American Materials Network
%R 10.1590/S1517-70762012000100004
%X polyacrylonitrile (pan) copolymer blends with biodegradable polymers were obtained by conventional industrial plastic processing via extrusion. the production process of these materials in conventional extruder was a method that until recently was impossible to produce, due to the fact the pan polymer initiated a degradation process before melting. however, it was developed a process that uses up to 28%/mass of glycerol as pan plasticizer. the present work has the aim to study the thermal behavior, by dsc technique, of a pan copolymer, whose composition was 94%/mass of acrylonitrile (an) and 6%/mass of vinyl acetate (va) and also of this copolymer mixed with up to 7%/mass of pcl and phb-hv biodegradable polymers. in addition to that, a kinetic study was also carried out, by the kissinger method, of the thermal event related to the degradation of the pan copolymer and its blends. the pan-co-va(6%) copolymer showed an activation energy of about 78 kj/mol and the pcl and phb-hv blends showed activation energies of about 79 kj/mol and 92 kj/mol, respectively.
%K polyacrylonitrile
%K biodegradable polymers
%K thermal behavior.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1517-70762012000100004&lng=en&nrm=iso&tlng=en