The polymerisation kinetics of lower dialkyl itaconates (original) (raw)

1999, Macromolecular Chemistry and Physics

The free radical polymerisation kinetics of diethyl-(DEI), dipropyl-(DnPI), dibutyl-(DnBI), and dihexyl itaconate (DHI) in the bulk were studied in the temperature range from 50 to 70 8 C. The concentration of the initiator, 2,29-azoisobutyronitrile (AIBN), was varied between 0.02 and 0.085 mol/dm 3 . The rate of polymerisation (R p ), degree of polymerisation (DP), overall polymerization rate constant (K), the ratio of the propagation and termination rate constants (k p /k t 1/2 ), as well as the chain transfer constant to monomer (C M ) were determined. The values of R p , K, and k p /k t 1/2 of the investigated monomers all increase with increasing size of the alkyl group in the ester substituent, whereas C M decreases when going from the dimethyl to the dihexyl ester. The values of C M are larger than the corresponding values for the alkyl esters of methacrylic acid.

Sign up for access to the world's latest research.

checkGet notified about relevant papers

checkSave papers to use in your research

checkJoin the discussion with peers

checkTrack your impact