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Molecular-Weight Changes in the Degradation of Long-Chain Polymers

โœ Scribed by Charlesby, A.

Book ID
120145825
Publisher
The Royal Society
Year
1954
Tongue
English
Weight
436 KB
Volume
224
Category
Article
ISSN
0962-8444

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๐Ÿ“œ SIMILAR VOLUMES

Polymer degradation. V. Changes in molec
Polymer degradation. V. Changes in molecular weight distributions during sonic irradiation of polyisobutene
โœ Roger S. Porter; Manfred J. R. Cantow; Julian F. Johnson ๐Ÿ“‚ Article ๐Ÿ“… 1967 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 269 KB ๐Ÿ‘ 2 views

Gel permeation chromatography was used to follow changes in the molecular weight distribution of a polyisobutene, initial = 466,000, during degradation induced by sonic irradiation. In general, a steady decrease in molecular weight was observed, although a bimodal distribution was present after 20,

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โœ J. F. S. Yu; J. L. Zakin; G. K. Patterson ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 931 KB

The mechanical shear degradation of polydisperse polyisobutene and monodisperse polystyrene in oils of different viscosities in the concentration range of 0.1% to 1% was studied using a high-shear concentric cylinder viscometer under laminar and uniform well-defined shear field conditions. Molecular

Degradation kinetics of polymers in solu
Degradation kinetics of polymers in solution: Dynamics of molecular weight distributions
โœ Benjamin J. McCoy; Giridhar Madras ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› American Institute of Chemical Engineers ๐ŸŒ English โš– 708 KB

Polymer degradation occurs when macromolecular chains are broken under the injluence of thermal, mechanical or chemical energy. Chain-end depolymerization and random-and midpoint-chain scission are mechanisms that have been observed in liquidphase polymer degradation. Here we develop mathematical mo