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Investigation of Temperature Dependency of Morphological Properties of Thermoplastic Polyurethane using WAXS and SAXS Monitoring

  • Polyether and polyether/ester based TPU (thermoplastic polyurethanes) were investigated with wide-angle XRD (X-ray diffraction) and SAXS (small angle X-ray scattering). Furthermore, SAXS measurements were performed in the temperature range of 30 °C to 130 °C. Polyether based polymers exhibit only one broad diffraction signal in a region of 2 θ 15° to 25°. In case of polyurethanes with ether/ester modification, the broad diffraction signal arises with small sharp diffraction signals. SAXS measurements of polymers reveal the size and shape of the crystalline zones of the polymer. Between 30 °C and 130 °C the size of the crystalline zone changes significantly. The size decreases in most of investigated TPU. In the case of Desmopan 9365D an increase of the particle size was observed.

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Document Type:Article
Author:Steffen Thomas Witzleben, Katharina Walbrueck, Stephanie Elisabeth Klein, Margit Schulze
Parent Title (English):Journal of Chemistry and Chemical Engineering
First Page:494
Last Page:499
Publisher:David Publishing
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2015/08/28
Funding Information:The authors thank the German Ministry for Education and Research (BMBF) for financial support (Project LignoBau, funding number 03FH013IX4).
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Keyword:SAXS; Thermoplastic polyurethanes; WAXS; crystallinity; mechanical properties; morphology; temperature influence
Departments, institutes and facilities:Fachbereich Angewandte Naturwissenschaften
Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE)
Projects:LignoBau - IngenieurNachwuchs 2014: Lignin-basierte Polymere für bauchemische Anwendungen (DE/BMBF/03FH013IX4,13FH013IX4)
Dewey Decimal Classification (DDC):5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Entry in this database:2016/03/10
Licence (German):License LogoCreative Commons - CC BY-NC - Namensnennung - Nicht kommerziell 4.0 International