Microstructure and Thermal and Rheological Properties of Low-Molecular-Mass Ethylene–Vinyl Acetate Copolymer

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The microstructure of low-molecular-mass ethylene–vinyl acetate copolymers was studied by 1Н and 13С NMR spectroscopy. The vinyl acetate mole fraction, chain branching, and mean lengths of ethylene and vinyl acetate blocks were determined. The thermal properties of ethylene–vinyl acetate copolymers were studied by differential scanning calorimetry and thermogravimetric analysis, and the crystalline characteristics, by X-ray diffraction analysis. The degree of crystallinity of the copolymer decreases with an increase in the fraction of the polar comonomer. Rheological studies show that ethylene–vinyl acetate copolymers at room temperature tend to microphase segregation and form a microphase structural network.

作者简介

A. Morontsev

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991, Moscow, Russia

Email: acjournal.nauka.nw@yandex.ru

G. Karpov

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991, Moscow, Russia

Email: acjournal.nauka.nw@yandex.ru

S. Il'in

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991, Moscow, Russia

Email: acjournal.nauka.nw@yandex.ru

K. Dement'ev

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991, Moscow, Russia

Email: acjournal.nauka.nw@yandex.ru

M. Bermeshev

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991, Moscow, Russia

编辑信件的主要联系方式.
Email: acjournal.nauka.nw@yandex.ru

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