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Morphological Parameters of PP/PA6 Blend Measured In‐Line During Extrusion
Author(s) -
Pinheiro Luís Antonio,
Bitencourt Celina Souza,
Pessan Luiz Antonio,
Canevarolo Sebastião Vicente
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651348
Subject(s) - extrusion , materials science , plastics extrusion , polyamide , polypropylene , particle size , particle (ecology) , composite material , reactive extrusion , detector , phase (matter) , analytical chemistry (journal) , polymer chemistry , optics , chemical engineering , chromatography , chemistry , physics , organic chemistry , oceanography , engineering , geology
An optical detector, assembled at a slit die at the exit of a twin screw extruder was used to quantify in‐line the extrusion of a PP/PA6 immiscible blend. During the extrusion the detector respond according to the changes in concentration and particle size of the polyamide 6 phase. The influence of dispersed phase concentration was evaluated varying its concentration from 0 to 5% (w/w). Reduction in the PA6 particle size was followed adding different amounts of polypropylene grafted with acrylic acid (PP‐g‐AA), which acts as a compatibilizer. The normalized detector signal intensity increases with an increase in PA6 concentration, due to an increase in the number of scattering particles in the medium, and with a decrease in its particle size. Plots of detector signal as a function of particle concentration and size enabled the calculation of the extinction cross sections of the PA6 segregated particles.