Depolymerization of pristine poly(CP), poly(NB-ran-CP) and poly(DCP-ran-CP)a.
poly(CP) | poly(NB-ran-CP)b | poly(DCP-ran-CP)c | ||
---|---|---|---|---|
Initial | Polymer | 3.01 g | 3.00 g | 3.02 g |
CP unit | 3.01 g | 1.41 g | 1.84 g | |
NB (or DCP) unit | — | 1.59 g | 1.18 g | |
CP/NB (or CP/DCP) | 100/0 in mol | 55/45 in mol | 76/24 in mol | |
— | 47/53 in wt | 61/39 in wt | ||
M w (g mol−1) | 453 000 | 238 000 | 250 000 | |
M w/Mn | 2.01 | 1.98 | 1.98 | |
G2 | 0.38 g | 0.31 g | 0.28 g | |
After RCMD | Non-volatile | 0.47 g | 1.91 g | 1.57 g |
Polymerd | 0.09 g | 1.60 g | 1.29 g | |
CP unit | — | 0.03 g, (2%) | 0.13 g, (7%) | |
NB (or DCP) unit | — | 1.57 g, (99%) | 1.16 g, (99%) | |
CP/NB (or CP/DCP) | 100/0 in mol | 3/97 in mol | 18/82 in mol | |
— | 2/98 in wt | 10/90 in wt | ||
M w(g mol−1) | — | 4700 | 6700 | |
M w/Mn | — | 4.0 | 5.1 | |
Volatile part CP recovery | 2.92 g | 1.32 g | 1.69 g | |
97% | 94% | 92% |
Depolymerized in toluene at 60 °C for 24 h; [total polymer units] = 0.5 M, [(H2IMes)(PCy3)Cl2Ru CHPh] = 5 mM, [(H2IMes)(PCy3)Cl2Ru CHPh]:[total polymer units] = 1 : 100.
[Poly(CP) units] = 0.28 M.
[Poly(CP) units] = 0.38 M.
Weight of polymer = weight of non-volatile − weight of G2.