Abstract
The racemization kinetics of polycarbonate (PC) probes in dilute solution of decalin were studied. The racemization in PC showed considerable deviation from the kinetics in small molecule solvents in all cases except for the smallest probe BNO. Shorter time scale of probe motion resulted in kinetics closer to the exponential of the physical aging, which were the cause of the non-exponential kinetics observed in the thermal racemization. Since the time scale of probe motion in the photo-racemization was shorter than in the thermal-racemization, it intersects that the segmental relaxation time of the PC at a higher temperature and started slowing deviation from first order kinetics at higher temperature.
Original language | English (US) |
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Pages (from-to) | 955-956 |
Number of pages | 2 |
Journal | American Chemical Society, Polymer Preprints, Division of Polymer Chemistry |
Volume | 41 |
Issue number | 1 |
State | Published - Mar 2000 |
Event | The San Francisco Meeting - San Francisco, CA, USA Duration: Mar 26 2000 → Mar 31 2000 |
ASJC Scopus subject areas
- Polymers and Plastics