| Autor: |
Moad, G, Solomon, DH, Spurling, TH, Johns, SR, Willing, RI |
| Zdroj: |
Australian Journal of Chemistry; 1986, Vol. 39 Issue: 1 p43-50, 8p |
| Abstrakt: |
The tacticity of poly(methyl methacrylate ) prepared by free-radical polymerization has been determined by analysing the carbonyl region of the 13C n.m.r . spectrum. This analysis demonstrates that the addition of poly(methyl methacrylyl ) radical to methyl methacrylate in benzene at 60°C is subject to a significant penpenultimate unit effect. The probability of forming a meso dyad is some 20% less if the preceding dyad in the chain is also meso . The polymerization (60°C, benzene) is described by the following parameters P(m) = 0.202, P(m|m) = 0.159, P(r | m) = 0.212. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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