Skip to main content
SpringerLink
Log in

Thermodynamics of isothermal vitrification by chemical reactions in a liquid

  • Note Brevi
  • Published:
Il Nuovo Cimento D

Summary

We report here first observations of the decrease in heat capacity during isothermal vitrification of a thermosetting polymer. A new experimental method has been developed for this study which allows simultaneous measurements of both the heat capacity and the enthalpy released as chemical reactions occur in quasi-isothermal conditions. During the curing the heat capacity of a thermoset first increases slightly, undergoes an abrupt decrease in a narrow range of time and thereafter slowly decreases. The abrupt decrease represents the irreversible transition of the liquid to a vitreous solid which is equivalent to the reversible glass transition appearing in a supercooled liquid when the temperature is lowered.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

References

  1. G. P. Johari andM. B. M. Mangion:J. Non-Cryst. Solids.,131, 921 (1991).

    Article  ADS  Google Scholar 

  2. W. Kauzmann:Chem. Rev.,43, 219 (1948).

    Article  Google Scholar 

  3. R. O. Davies andG. O. Jones:Adv. Phys.,2, 370 (1953).

    Article  ADS  Google Scholar 

  4. J. Wong andC. A. Angell:Glass: Structure by Spectroscopy (Marcel Dekker, New York, N.Y., 1976).

    Google Scholar 

  5. G. P. Johari:J. Chem. Educ.,51, 23 (1974).

    Article  Google Scholar 

  6. S. R. Elliott:Physics of Amorphous Materials (Longman, London, 1983).

    Google Scholar 

  7. S. Corrozzino, G. Levita, P. Rolla andE. Tambari:Polym. Eng. Sci.,30, 366 (1990).

    Article  Google Scholar 

  8. M. G. Parthun andG. P. Johari:J. Polym. Sci. Polym. Phys. (in press).

  9. A. Barbini, D. Bertolini, M. Cassettari, F. Papucci, A. Salvetti, G. Salvetti andS. Veronesi:Rev. Sci. Instrum.,60, 1308 (1989).

    Article  ADS  Google Scholar 

  10. D. Bertolini, M. Cassettari, G. Salvetti, E. Tombari andS. Veronesi:Rev. Sci. Instrum.,61, 2416 (1990).

    Article  ADS  Google Scholar 

  11. G. P. Johari:Philos. Mag.,41, 41 (1981).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Instituto di Fisica Atomica e Molecolare del C.N.R., Via del Giardino 7, 56127, Pisa, Italia

    M. Cassettari, G. Salvetti, E. Tombari & S. Veronesi

  2. Department of Materials Science and Engineering, McMaster University, L8S 4L7, Hamilton, Ontario, Canada

    G. P. Johari

Authors
  1. M. Cassettari
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. Salvetti
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. E. Tombari
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. S. Veronesi
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. G. P. Johari
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Cassettari, M., Salvetti, G., Tombari, E. et al. Thermodynamics of isothermal vitrification by chemical reactions in a liquid. Il Nuovo Cimento D 14, 763–766 (1992). https://doi.org/10.1007/BF02451722

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02451722

PACS 64.70.Pf

PACS 07.20

Search

Navigation