Deconvoluting the Impact of Intermolecular and Intramolecular Interactions on the Polymerization Kinetics of Ultrarapid Mono(meth)acrylates
| Autor: | Jeffrey W. Stansbury, Harini Kilambi, Christopher N. Bowman |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Macromolecules. 40:47-54 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma0619839 |
| Popis: | Polymerization studies in the presence of extensive amounts of solvent are used here to deconvolute the effects of intermolecular interactions such as bulk medium polarity, π−π stacking, and hydrogen bonding and characterize the contribution of intramolecular conformational effects to monomer reactivity. For that purpose the solution polymerization kinetics of various monomers in the presence of 95 wt % 1, 4-dioxane were measured and compared to bulk polymerization kinetics. The studies revealed that traditional aliphatic acrylates like hexyl acrylate exhibit approximately 2−3-fold reduction upon dilution. Monomers characterized by only hydrogen-bonding features such as hydroxyethyl acrylate exhibit an 8−12-fold reduction upon dilution. Monomers possessing only aromatic ring stacking interactions such as phenyl acrylate exhibit approximately a 5−10-fold reduction upon dilution under similar conditions. Even at a concentration of 5 wt % monomer in 1,4-dioxane, there were approximately 2−5-fold differences ... |
| Databáze: | OpenAIRE |
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