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Title:

Free volumes in mixed-tacticity poly(3-hydroxybutyrate) determined by viscosimetry and their correlations with structural features and mechanical properties

Document type:
Zeitschriftenaufsatz
Author(s):
Van Opdenbosch, Daniel; Kretschmer, Martin; Lieleg, Oliver; Zollfrank, Cordt
Abstract:
The viscosities of poly(3-hydroxybutyrate) (PHB) with mixed tacticities were determined as functions of temperature and shearing rate via plate-plate viscosimetry, and fitted by a combined Herschel-Bulkley-Cross-Doolittle model while applying Carvalho et al.'s single-point correction. They were compared to values of slit viscosimetry, obtained during processing at a temperature of 428 K. In both cases, measured values and fitted model parameters as a function of tacticity exhibited a discontinuo...     »
Keywords:
free volume; poly(3-hydroxybutyrate); tacticity; thermal expansion; viscosity
Dewey Decimal Classification:
500 Naturwissenschaften
Journal title:
Applied Rheology
Year:
2022
Journal volume:
32
Journal issue:
1
Pages contribution:
56-68
Covered by:
Scopus
Reviewed:
ja
Language:
en
Fulltext / DOI:
doi:10.1515/arh-2022-0125
Publisher:
Walter de Gruyter GmbH
E-ISSN:
1617-8106
Date of publication:
01.01.2022
TUM Institution:
Fachgebiet für Biomechanik, MW
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