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The Influence of Water and Solvent Uptake on Functional Properties of Shape-Memory Polymers
Joint Authors
Eggeler, Gunther
Ghobadi, Ehsan
Steeb, Holger
Marquardt, Axel
Zirdehi, Elias Mahmoudinezhad
Neuking, Klaus
Varnik, Fathollah
Source
International Journal of Polymer Science
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-05-28
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In this contribution, diffusion of water, acetone, and ethanol into a polymer matrix has been studied experimentally and numerically by finite element approaches.
Moreover, the present study reports an assessment of different thermomechanical conditions of the shape-memory (SM) performance, for example, stress- or strain-holding times in stress- or strain-controlled thermomechanical cycles and the effect of maximum strain.
According to the results presented here, the uptake of acetone in Estane is much higher than ethanol and follows classical Fickian diffusion.
Further, a series of thermomechanical measurements conducted on dry and physically (hydrolytically) aged polyether urethanes revealed that incorporation of water seems to have an appreciable impact on the shape recovery ratios which can be attributed to the additional physical crosslinks.
However, no obvious difference in shape fixation of dry and physically (hydrolytically) aged samples could be recognized.
Furthermore, by decreasing the strain-holding time, shape recovery improves significantly.
Moreover, the shape fixity is found to be independent of holding time.
The shape recovery ratio decreased dramatically with an increase in the stress-holding time.
American Psychological Association (APA)
Ghobadi, Ehsan& Marquardt, Axel& Zirdehi, Elias Mahmoudinezhad& Neuking, Klaus& Varnik, Fathollah& Eggeler, Gunther…[et al.]. 2018. The Influence of Water and Solvent Uptake on Functional Properties of Shape-Memory Polymers. International Journal of Polymer Science،Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1175291
Modern Language Association (MLA)
Ghobadi, Ehsan…[et al.]. The Influence of Water and Solvent Uptake on Functional Properties of Shape-Memory Polymers. International Journal of Polymer Science No. 2018 (2018), pp.1-15.
https://search.emarefa.net/detail/BIM-1175291
American Medical Association (AMA)
Ghobadi, Ehsan& Marquardt, Axel& Zirdehi, Elias Mahmoudinezhad& Neuking, Klaus& Varnik, Fathollah& Eggeler, Gunther…[et al.]. The Influence of Water and Solvent Uptake on Functional Properties of Shape-Memory Polymers. International Journal of Polymer Science. 2018. Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1175291
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175291