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. Publication References
  4. Dynamic mechanical analysis of supercooled water in nanoporous confinement
 
Options

Dynamic mechanical analysis of supercooled water in nanoporous confinement

Publikationstyp
Journal Article
Date Issued
2016-08
Sprache
English
Author(s)
Soprunyuk, Viktor  
Schranz, Wilfried  
Huber, Patrick  orcid-logo
Institut
Werkstoffphysik und -technologie M-22  
TORE-URI
http://hdl.handle.net/11420/5675
Journal
epl  
Volume
115
Issue
4
Article Number
46001
Citation
EPL 4 (115): 46001 (2016-08)
Publisher DOI
10.1209/0295-5075/115/46001
Scopus ID
2-s2.0-84991710666
Dynamical mechanical analysis (DMA)(f = 0.2.100Hz) is used to study the dynamics of confined water in mesoporous Gelsil (2.6nm and 5nm pores) and Vycor (10 nm) in the temperature range from T = 80K to 300 K. Confining water into nanopores partly suppresses crystallization and allows us to perform measurements of supercooled water below 235K, i.e., in water's so-called no man's land', in parts of the pores. Two distinct relaxation peaks are observed in tan δ around T1 ≈ 145K (P1) and T2 ≈ 205K (P2) for Gelsil 2.6 nm and Gelsil 5 nm at 0.2Hz. Both peaks shift to higher T with increasing pore size d and change with f in a systematic way, typical of an Arrhenius behaviour of the corresponding relaxation times. For P1 we obtain an average activation energy of Ea = 0.47 eV, in good agreement with literature values, suggesting that P1 corresponds to the glass transition of supercooled water. The observation of a pronounced softening of the Young's modulus around 165K (for Gelsil 2.6 nm at 0.2 Hz) supports the conjecture of a glass-to-liquid transition in the vicinity of P1. In addition we find a clear-cut (1/d)-dependence of the calculated glass transition temperatures which extrapolates to Tg(1/d = 0) = 136 K, in agreement with the traditional value of water.
DDC Class
600: Technology
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