TY - JOUR
T1 - Copolymerization kinetics of 4‐methoxystyrene with methyl methacrylate and 4‐methoxystyrene with styrene
T2 - A test of the penultimate model
AU - Piton, Mark C.
AU - Winnik, Mitchell A.
AU - Davis, Thomas P.
AU - O'driscoll, Kenneth F.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - The propagation kinetics for the copolymerization of 4‐methoxystyrene with methyl methacrylate and 4‐methoxystyrene with styrene have been investigated using a pulsed laser technique. The dependence of the copolymerization propagation rate constant on the monomer feed ratio shows a diviation from classic Mayo–Lewis model kinetics for 4‐methoxystyrene with methyl methacrylate but not for 4‐methoxystyrene with styrene. These results have been interpreted to indicate that a penultimate effect is apparent in the first monomer pair but not in the second. With r1r2 = 0.092 for the copolymerization of 4‐methoxystyrene with methyl methacrylate and r1r2 = 0.95 for 4‐methoxystyrene with styrene, it is suggested that a deviation of the product of the coplymerization reactivity ratios from unity may be an indication of the presence of a penultimate effect.
AB - The propagation kinetics for the copolymerization of 4‐methoxystyrene with methyl methacrylate and 4‐methoxystyrene with styrene have been investigated using a pulsed laser technique. The dependence of the copolymerization propagation rate constant on the monomer feed ratio shows a diviation from classic Mayo–Lewis model kinetics for 4‐methoxystyrene with methyl methacrylate but not for 4‐methoxystyrene with styrene. These results have been interpreted to indicate that a penultimate effect is apparent in the first monomer pair but not in the second. With r1r2 = 0.092 for the copolymerization of 4‐methoxystyrene with methyl methacrylate and r1r2 = 0.95 for 4‐methoxystyrene with styrene, it is suggested that a deviation of the product of the coplymerization reactivity ratios from unity may be an indication of the presence of a penultimate effect.
UR - http://www.scopus.com/inward/record.url?scp=0025460434&partnerID=8YFLogxK
U2 - 10.1002/pola.1990.080280807
DO - 10.1002/pola.1990.080280807
M3 - Article
AN - SCOPUS:0025460434
SN - 0887-624X
VL - 28
SP - 2097
EP - 2106
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
IS - 8
ER -