Structural-Mechanical Modification of Amorphous Polyethylene Terephthalate and Hybrid Nanocomposite Materials Based on It

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Resumo

Hybrid nanocomposite materials based on polyethylene terephthalate and inorganic flame-retardant diammonium phosphate were prepared according to the fundamental strategy of environmental crazing of polymers. Structural-mechanical modification of the initial amorphous polyethylene terephthalate and the resultant nanocomposite polyethylene terephthalate-based was carried out by rolling at room temperature. The effect of preliminary rolling on the deformation behavior of polyethylene terephthalate during subsequent stretching in air and in physically active liquid media was established.

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Sobre autores

A. Dolgova

Lomonosov Moscow State University

Autor responsável pela correspondência
Email: dolgova2003@mail.ru
ORCID ID: 0000-0002-0551-6124
Rússia, Moscow

D. Stolbov

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
Rússia, Moscow

S. Sorochinskaya

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
Rússia, Moscow

A. Zaikin

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
Rússia, Moscow

A. Yarusheva

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
ORCID ID: 0000-0003-4997-6883
Rússia, Moscow

S. Savilov

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
ORCID ID: 0000-0002-5827-3912
Rússia, Moscow

L. Yarusheva

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
Rússia, Moscow

O. Arzhakova

Lomonosov Moscow State University

Email: dolgova2003@mail.ru
ORCID ID: 0000-0002-8811-5528
Rússia, Moscow

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2. Fig. 1. Scanning electron micrographs of the spall (a) and surface (b) of initial polyethylene terephthalate deformed at 100% in physically active liquid media. The arrow indicates the direction of deformation in physically active liquid media

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3. Fig. 2. Scanning electron micrographs of chips (a, c, e) and surfaces (b, d, f) of polyethylene terephthalate samples deformed in physically active liquid media up to 100% in 1 (a, b), 24 (c, d) and 48 h (e, f) after pre-deformation by 25% at room temperature. Arrows indicate the direction of deformation in physically active liquid media; the direction of deformation in physically active liquid media coincides with the rolling direction

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4. Fig. 3. Dynamometric curves of polyethylene terephthalate samples in tension in air (1-3) and in physically active liquid media (4-6) 24 h after rolling. Degrees of pre-deformation of samples, %: 0 (1, 4), 25 (2, 5) и 50 (3, 6)

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5. Fig. 4. Dependence of relative stress reduction in yield stress (1) and steady-state strain development (2) during tensile stretching of polyethylene terephthalate samples in physically active liquid media on the degree of polymer pre-deformation at room temperature

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6. Fig. 5. Scanning electron micrographs of a chipped sample of polyethylene terephthalate-diammonium phosphate hybrid nanocomposite materials (a) and a map of the distribution of phosphorus atoms in the chip (white dots) (b)

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