Solvent effect on the methacrylic acid-methyl methacrylate radical copolymerization. Analytical estimation by linear and nonlinear solvation energy relationships
✍ Scribed by Georgi S. Georgiev; Ivanka G. Dakova
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 548 KB
- Volume
- 195
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The calculated methacrylic acid‐methyl methacrylate monomer reactivity ratios in toluene (r~MA~ = 1,06 ± 0,02; r~MMA~ = 0,10 ± 0,01), isopropyl alcohol (r~MA~ = 0,33 ± 0,02; r~MMA~ = 0,78 ± 0,03), acetone (r~MA~ = 0,63 ± 0,02; r~MMA~ = 0,31 ± 0,02) and acetonitrile (r~MA~ = 0,46 ± 0,03; r~MMA~ = 0,27 ± 0,03) depend strongly on the polarity, proton donor and proton acceptor ability of the solvent. It is proved that the solvent influence on the logarithm of the relative comonomer reactivities is expressed much better by the linear relationships of the solvatochromic polarity, proton donor and proton acceptor indexes than by the dependences reflecting these effects individually. The possibility of a statistically confident description of the complex solvent influence on the comonomer reactivities by quadratic solvatochromic relationships taking into account the interdependence of solvent effects is shown for the first time.