## Abstract A general kinetic treatment of the system with intermolecular chain transfer followed by fast reinitiation is given. It leads to the broadening of the molecular weight distribution (MWD), the number of growing chains being invariable. Thus, this system can be considered as a special cas
Statistical theory of chain scission and concurrent damage not associated with chain scission in linear polymers
β Scribed by Roland B. Hawkins
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1977
- Tongue
- English
- Weight
- 473 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0006-3525
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β¦ Synopsis
Abstract
A statistical theory of the parallel accumulation of randomly placed breaks and damage not associated with breaks in linear polymers is presented. Expressions for the weight fraction of polymer in the form of chains that bear n or more sites of nonbreak damage (markers) are developed, and results of numerical computations with them presented. The effects of polydispersity in the undamaged sample are discussed. The relation of the computed quantities to experimental methods used in the study of damage to nucleic acids due to radiation and chemical exposure is discussed.
π SIMILAR VOLUMES
The statistical theories of main chain scission and crosslinking resulting from either homogeneous or inhomogeneous energy dissipation in polymers are summarized. The molecular weight distributions of polystyrene samples subjected in vacuo to 7-rays (homogeneous energy dissipation) or to U.V. irradi
The in situ formation of a compatibilizer, consisting of a copolymer of PA grafted onto a maleic anhydride (MA) containing polymer, is essential for the morphology and properties of the corresponding PA blends. In this study four blends, containing PA-6 or PA-6.6 and EPDM-g-MA or poly(styrene-co-mal