SciELO - Scientific Electronic Library Online

 
vol.17 issue1Chemical, physical and mineralogical characterization of Azul Mine manganese lump productUse of statistical techniques to model the flexural strength of ceramic bodies containing granite waste author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Matéria (Rio de Janeiro)

On-line version ISSN 1517-7076

Abstract

FLEMING, R.R. et al. Evaluation of PAN/biodegradable polymers blends by calorimetry. Matéria (Rio J.) [online]. 2012, vol.17, n.1, pp. 909-918. ISSN 1517-7076.  http://dx.doi.org/10.1590/S1517-70762012000100004.

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.

Keywords : Polyacrylonitrile; biodegradable polymers; thermal behavior.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese