6533b7d2fe1ef96bd125e9b1
RESEARCH PRODUCT
false
Jean GrandjeanBernd WillenbergHans Sillescusubject
chemistry.chemical_compoundDeuteriumchemistryRelaxation (NMR)Polymer chemistryMolecular motionPhysical chemistryPolystyreneRing (chemistry)PhotochemistryBenzeneDiethyl malonatedescription
Deuteron relaxation times T1 of polystyrenes deuterated at the backbone (PS-d3) and the phenyl ring (PS-d5), respectively, have been measured in solutions of benzene and diethyl malonate as a function of concentration and temperature. We conclude that the motion of the phenyl ring is faster than that of the backbone, the difference being smallest at high temperatures around 180°C. The temperatures dependence is discussed in relation to the activation energies in polystyrene.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1977-05-01 | Die Makromolekulare Chemie |