Blucher Engineering Proceedings

Outubro 2023, vol.10, num.5 - IX Simpósio Internacional de Inovação e Tecnologia
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USE OF MELT FLOW INDEX MEASUREMENTS TO EVALUATE THE RHEOLOGICAL PROPERTIES OF POLYBUTYLENE SUCCINATE (PBS) WHEN SUBMITTED TO DRYING

USE OF MELT FLOW INDEX MEASUREMENTS TO EVALUATE THE RHEOLOGICAL PROPERTIES OF POLYBUTYLENE SUCCINATE (PBS) WHEN SUBMITTED TO DRYING

AZEVEDO, JOYCE BATISTA; Almeida, Ilana Oliveira; Horiuchi, Lucas Nao; Fialho, Rosana Lopes Lima

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Polybutylene succinate (PBS) is a biodegradable polymer that has the potential to replace conventional plastic, however it has limitations such as processing viscosity and high cost. In this work, melt flow index index (MFR) measurements were used to evaluate the influence of the way PBS was packaged before processing and whether this condition could influence the rheological characteristics of the polymer. For this purpose, samples of PBS packaged by the manufacturer (humid PBS) and after drying for 5 hours at 70°C (dry PBS) were evaluated. The results confirmed the degradation condition of the PBS, before being submitted to drying, since the MFR of the sample presented a reduction of 75% of the value indicated by the manufacturer. The melt flow index, obtained from the variation in weight, was used to evaluate the rheological curve of the PBS and a pseudoplastic behavior was verified that did not vary with the form of packaging.

Polybutylene succinate (PBS) is a biodegradable polymer that has the potential to replace conventional plastic, however it has limitations such as processing viscosity and high cost. In this work, melt flow index index (MFR) measurements were used to evaluate the influence of the way PBS was packaged before processing and whether this condition could influence the rheological characteristics of the polymer. For this purpose, samples of PBS packaged by the manufacturer (humid PBS) and after drying for 5 hours at 70°C (dry PBS) were evaluated. The results confirmed the degradation condition of the PBS, before being submitted to drying, since the MFR of the sample presented a reduction of 75% of the value indicated by the manufacturer. The melt flow index, obtained from the variation in weight, was used to evaluate the rheological curve of the PBS and a pseudoplastic behavior was verified that did not vary with the form of packaging.

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DOI: 10.5151/siintec2023-306783

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Como citar:

AZEVEDO, JOYCE BATISTA ; Almeida, Ilana Oliveira ; Horiuchi, Lucas Nao ; Fialho, Rosana Lopes Lima ; "USE OF MELT FLOW INDEX MEASUREMENTS TO EVALUATE THE RHEOLOGICAL PROPERTIES OF POLYBUTYLENE SUCCINATE (PBS) WHEN SUBMITTED TO DRYING", p-579-585. In: . São Paulo: Blucher, 2023.
ISSN 23577592, DOI 10.5151/siintec2023-306783

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