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Ultrasonic disassociation of EVA random copolymer in dilute solutions

✍ Scribed by J. W. Qian; G. H. Zhou; Y. L. An

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
133 KB
Volume
81
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Ultrasonic disassociation of the ethylene–vinyl acetate (EVA) random copolymer in 1,2‐dichloroethane (DCE), cyclohexane (CYH), and their solvent mixtures was investigated using viscometry and dynamic laser light scattering (DLLS). It was found that the disassociation of the EVA aggregates in solutions increases with increasing the time and intensity of ultrasonic shearing and approaches invariant finally. This phenomenon is especially marked for the EVA copolymer with low vinyl acetate (VA) content in the polar solvent of DCE at higher concentration and lower temperature. This is attributed to disassociation of the ethylene segment of the EVA random copolymer in dilute solutions. Β© 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 2798–2802, 2001

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