Cargando…
Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)
Presently, almost every industry uses conventional plastics. Its production from petroleum and extensive plastic pollution cause environmental problems. More sustainable alternatives to plastics include bioplastics such as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), which is produced by bac...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8309463/ https://www.ncbi.nlm.nih.gov/pubmed/34301051 http://dx.doi.org/10.3390/polym13142294 |
_version_ | 1783728527504310272 |
---|---|
author | Lajewski, Silvia Mauch, Annika Geiger, Kalman Bonten, Christian |
author_facet | Lajewski, Silvia Mauch, Annika Geiger, Kalman Bonten, Christian |
author_sort | Lajewski, Silvia |
collection | PubMed |
description | Presently, almost every industry uses conventional plastics. Its production from petroleum and extensive plastic pollution cause environmental problems. More sustainable alternatives to plastics include bioplastics such as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), which is produced by bacteria and is biodegradable even in seawater. High temperature sensitivity as well as massive thermal degradation cause difficulties during the processing of PHBV. The aim of this work is to create a detailed rheological characterization and master curves to gain deeper knowledge about the material and its processing parameters. The rheological characterization was performed with frequency sweeps in the range of 0.1 rad/s to 628 rad/s and time sweeps over 300 s. Creating master curves at the reference temperature of 180 °C with the software IRIS delivers Carreau and Arrhenius parameters. These parameters allow for a calculation of the master curves for all other temperatures by means of the temperature shift factor. Moreover, the rheological measurements reveal a minimum rheological measurement temperature of 178 °C and a surprisingly high activation energy of 241.8 kJ/mol. |
format | Online Article Text |
id | pubmed-8309463 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-83094632021-07-25 Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) Lajewski, Silvia Mauch, Annika Geiger, Kalman Bonten, Christian Polymers (Basel) Article Presently, almost every industry uses conventional plastics. Its production from petroleum and extensive plastic pollution cause environmental problems. More sustainable alternatives to plastics include bioplastics such as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), which is produced by bacteria and is biodegradable even in seawater. High temperature sensitivity as well as massive thermal degradation cause difficulties during the processing of PHBV. The aim of this work is to create a detailed rheological characterization and master curves to gain deeper knowledge about the material and its processing parameters. The rheological characterization was performed with frequency sweeps in the range of 0.1 rad/s to 628 rad/s and time sweeps over 300 s. Creating master curves at the reference temperature of 180 °C with the software IRIS delivers Carreau and Arrhenius parameters. These parameters allow for a calculation of the master curves for all other temperatures by means of the temperature shift factor. Moreover, the rheological measurements reveal a minimum rheological measurement temperature of 178 °C and a surprisingly high activation energy of 241.8 kJ/mol. MDPI 2021-07-13 /pmc/articles/PMC8309463/ /pubmed/34301051 http://dx.doi.org/10.3390/polym13142294 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lajewski, Silvia Mauch, Annika Geiger, Kalman Bonten, Christian Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) |
title | Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) |
title_full | Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) |
title_fullStr | Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) |
title_full_unstemmed | Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) |
title_short | Rheological Characterization and Modeling of Thermally Unstable Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) |
title_sort | rheological characterization and modeling of thermally unstable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (phbv) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8309463/ https://www.ncbi.nlm.nih.gov/pubmed/34301051 http://dx.doi.org/10.3390/polym13142294 |
work_keys_str_mv | AT lajewskisilvia rheologicalcharacterizationandmodelingofthermallyunstablepoly3hydroxybutyrateco3hydroxyvaleratephbv AT mauchannika rheologicalcharacterizationandmodelingofthermallyunstablepoly3hydroxybutyrateco3hydroxyvaleratephbv AT geigerkalman rheologicalcharacterizationandmodelingofthermallyunstablepoly3hydroxybutyrateco3hydroxyvaleratephbv AT bontenchristian rheologicalcharacterizationandmodelingofthermallyunstablepoly3hydroxybutyrateco3hydroxyvaleratephbv |