TUHH Open Research
Help
  • Log In
    New user? Click here to register.Have you forgotten your password?
  • English
  • Deutsch
  • Communities & Collections
  • Publications
  • Research Data
  • People
  • Institutions
  • Projects
  • Statistics
  1. Home
  2. TUHH
  3. Publications
  4. Nanostructural changes in crystallizable controlling units determine the temperature-memory of polymers
 
Options

Nanostructural changes in crystallizable controlling units determine the temperature-memory of polymers

Citation Link: https://doi.org/10.15480/882.2352
Publikationstyp
Journal Article
Date Issued
2015-03-03
Sprache
English
Author(s)
Nöchel, Ulrich  
Reddy, Chaganti Srinivase  
Wang, Ke  
Cui, Jing  
Zizak, Ivo  
Behl, Marc  
Kratz, Karl  
Lendlein, Andreas  
Institut
Werkstoffphysik und -technologie M-22  
TORE-DOI
10.15480/882.2352
TORE-URI
http://hdl.handle.net/11420/3025
Journal
Journal of materials chemistry / A, Materials for energy and sustainability  
Volume
3
Issue
16
Start Page
8284
End Page
8293
Citation
Journal of Materials Chemistry A 16 (3): 8284-8293 (2015)
Publisher DOI
10.1039/c4ta06586g
Scopus ID
2-s2.0-84926671702
Publisher
Royal Society of Chemistry (RSC)
Temperature-memory polymers remember the temperature, where they were deformed recently, enabled by broad thermal transitions. In this study, we explored a series of crosslinked poly[ethylene-co-(vinyl acetate)] networks (cPEVAs) comprising crystallizable polyethylene (PE) controlling units exhibiting a pronounced temperature-memory effect (TME) between 16 and 99 °C related to a broad melting transition (∼100 °C). The nanostructural changes in such cPEVAs during programming and activation of the TME were analyzed via in situ X-ray scattering and specific annealing experiments. Different contributions to the mechanism of memorizing high or low deformation temperatures (T<inf>deform</inf>) were observed in cPEVA, which can be associated to the average PE crystal sizes. At high deformation temperatures (>50 °C), newly formed PE crystals, which are established during cooling when fixing the temporary shape, dominated the TME mechanism. In contrast, at low T<inf>deform</inf> (<50 °C), corresponding to a cold drawing scenario, the deformation led preferably to a disruption of existing large crystals into smaller ones, which then fix the temporary shape upon cooling. The observed mechanism of memorizing a deformation temperature might enable the prediction of the TME behavior and the knowledge based design of other TMPs with crystallizable controlling units.
DDC Class
530: Physik
Lizenz
https://creativecommons.org/licenses/by-nc/3.0/
Loading...
Thumbnail Image
Name

c4ta06586g.pdf

Size

1.5 MB

Format

Adobe PDF

TUHH
Weiterführende Links
  • Contact
  • Send Feedback
  • Cookie settings
  • Privacy policy
  • Impress
DSpace Software

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science
Design by effective webwork GmbH

  • Deutsche NationalbibliothekDeutsche Nationalbibliothek
  • ORCiD Member OrganizationORCiD Member Organization
  • DataCiteDataCite
  • Re3DataRe3Data
  • OpenDOAROpenDOAR
  • OpenAireOpenAire
  • BASE Bielefeld Academic Search EngineBASE Bielefeld Academic Search Engine
Feedback