Abstract
We have performed dynamic light-scattering experiments on poly(propylene-glycol) (PPG) above and below the glass transition temperature (200 K). In addition to the α-relaxation (stretched exponential decay with stretching parameter βK ≈ 0.40), we observe two relaxation processes not witnessed before by photon correlation spectroscopy. They are attributed to the α′- and βrelaxations and they exhibit similar power law decays. All three processes are analysed in terms of recent mode coupling theories. The scaling relations inherent in the mode coupling approach are tested by determining the relevant exponents directly from the spectra.
| Original language | English |
|---|---|
| Publisher | Publ by Dr. Dietrich Steinkopff Verlag |
| Number of pages | 3 |
| Volume | 91 |
| ISBN (Print) | 0387914447 |
| State | Published - 1993 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Colloid and Surface Chemistry
- Chemistry (miscellaneous)
- Physical and Theoretical Chemistry
- Polymers and Plastics
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Cite this
Sidebottom, D. L., Bergman, R., Borjesson, L., & Torell, L. M. (1993). Scaling behaviour in poly(propylene glycol) in the glass transition range. Publ by Dr. Dietrich Steinkopff Verlag.