Cationic Copolymerization of Epichlorohydrin with Styrene Oxide and with Cyclohexene Oxide |
| |
| Authors: | W M Pasika Dian Jia Chen |
| |
| Institution: | 1. Chemistry Department , Laurentian University , Sudbury, Ontario, P3E 2C6, Canada;2. Polymer Science Department , Beijing Institute of Chemical Technology , Beijing, People's Republic of China |
| |
| Abstract: | Cationic copolymerizations of epichlorohydrin (ECH) (chloro-methyl oxirane) with styrene oxide (SO) (phenyl oxirane) and with 1,2-cyclohexene oxide (CO) (7-oxabicyclo 410] heptane) were carried out at 50°C by employing the salt triphenylmethyl hexachloro-antimonate (HC) (Ph3CSbCl6) as initiator. NMR spectra before and after attempted extractions of the polymeric products indicated that the resulting polymeric products were true copolymers and not mixtures of the respective homopolymers. Monomer reactivity ratios for both pairs of comonomers were determined; for one pair the values were r 1(ECH) = 3.29, r 2(CO) = 0.16 and for the second pair r 1(ECH) = 0.57, r 2(SO) = 0.16. |
| |
| Keywords: | |
|
|
