A kinetic model has been developed for atom transfer radical polymerization processes using the method of moments. This model predicts monomer conversion, number-average molecular weight and polydispersity of molecular weight distribution. It takes into account the effects of side reactions includin
Statistical derivation of kinetic molecular weight development equations in nonlinear free-radical polymerization
โ Scribed by Hidetaka Tobita
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 685 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1022-1344
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โฆ Synopsis
Abstract
We propose a statistical method to derive the differential equations that describe the weightโaverage molecular weight development during nonlinear freeโradical polymerizations, by using the random sampling technique. We consider two types of nonlinear freeโradical polymerization schemes, freeโradical polymerization with chain transfer to polymer and freeโradical crosslinking (co)polymerization. The obtained equations fully agree with those obtained through the kinetic approach using the method of moments. The physical meaning of each term in the differential equations as well as the implication of the functional form is discussed from the point of view of the statistical derivation.
๐ SIMILAR VOLUMES
The attainable ยฎalues of molecular-weight distribution MWD specified by the degree of polymerization and the polydispersity in a batch free-radical polymerization reactor are described. The two-step method based on the quadratic profile of the instantaneous degree of polymerization is used to obtain
There has been determination of the molecular weight distributions which are to be expected when symmetrical multifunctional initiators of the structure