Influence of carbon black trimodal mixture on LDPE films properties: Part1 - DOE

Abstract In this study, the influence of carbon black (CB) trimodal mixture, with different medium particle sizes, on the colorimetric and rheological properties of polyethylene was evaluated. Three different types of CB were selected, with particle sizes of 15nm (S), 38nm (M), and 75nm (L) and comb...

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Bibliographic Details
Published in:Polímeros, ciência e tecnologia ciência e tecnologia, 2022-01, Vol.32 (3)
Main Authors: Barbosa, Juliano Martins, Beatrice, Cesar Augusto Gonçalves, Pessan, Luiz Antonio
Format: Article
Language:English
Subjects:
carbon black
polyethylene
POLYMER SCIENCE
tinting strength
trimodal particle size distribution
viscosity
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Summary:Abstract In this study, the influence of carbon black (CB) trimodal mixture, with different medium particle sizes, on the colorimetric and rheological properties of polyethylene was evaluated. Three different types of CB were selected, with particle sizes of 15nm (S), 38nm (M), and 75nm (L) and combined, generating a Design of Experiments (DOE) with 19 formulations to be dispersed at 30% in low density polyethylene (LDPE) in twin screw extruder. Such formulations were evaluated in performance and process properties, such as Tint Strength, Melt Flow Index (MFI), and Total Transmittance (TT). It was observed that the mixtures between small (S) and medium (M) particles developed greater tinting strength and lower viscosity, demonstrating the synergy of the mixture, which was superior in the performance of the mixture containing only a particular of 15nm (S) that would have greater potential for results.
ISSN:0104-1428
1678-5169
1678-5169
DOI:10.1590/0104-1428.20220039