Nanda, A. K. ; Kishore, K. (2001) Catalytic oxidative polymerization of vinyl monomers using cobalt phthalocyanine complex and an exploratory investigation on the polymerization of vinyl acetate Macromolecules, 34 (6). pp. 1558-1563. ISSN 0024-9297
Full text not available from this repository.
Official URL: http://pubs.acs.org/doi/abs/10.1021/ma0006629
Related URL: http://dx.doi.org/10.1021/ma0006629
Abstract
This is the first report on the oxidative polymerization of vinyl monomers using cobalt(II) phthalocyanine pyridine {CoIIPc(Py)} complex. The mechanism of polymerization is described and it has been supported from the kinetic data, UV-vis, ESR and 1H NMR studies. It is found that the rate of polymerizations (Rp) and number-average molecular weights (Mn) of the vinyl polyperoxides are higher for CoIIPc(Py) catalyzed polymerization compared to the usual free radical, AIBN, initiated polymerization. This is supported by their activation energy of initiation (Ei) and total activation energy (Ea) of polymerization. The peroxide macroinitiator has been used for the polymerization of vinyl acetate. The polymerization obeys classical kinetics. The K2 values of the peroxide macroinitiator has been determined, which reveals that it can also be used at higher temperature for the polymerization compared to monomeric peroxide initiator, benzoyl peroxide. The "active" poly(vinyl acetate) has also been synthesized, which contains peroxy segments at the chain ends.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 31984 |
Deposited On: | 05 Jul 2011 11:10 |
Last Modified: | 05 Jul 2011 11:10 |
Repository Staff Only: item control page