Structural features of polylactide and natural rubber films produced by solution casting

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Аннотация

Composite film samples of polylactide-natural rubber with a rubber content of 5, 10 and 15 wt. % were obtained by the solution method. The study of morphology showed the presence of rubber inclusions in the form of drops in the polylactide matrix. Thermophysical characteristics were determined by differential scanning calorimetry. It was determined that when rubber was added, the peak of cold crystallization of polylactide disappears on melting thermograms, the melting temperature decreases by 1–4°C compared to 100% polylactide. The structure of the obtained compositions was studied by nuclear magnetic resonance, electron paramagnetic resonance, and X-ray diffraction. The diffraction patterns of the samples contain reflections characteristic of the crystalline α-form of polylactide.

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Авторлар туралы

Yu. Tertyshnaya

Emanuel Institute of Biochemical Physics of Russian Academy of Sciences; Plekhanov Russian University of Economics

Хат алмасуға жауапты Автор.
Email: terj@rambler.ru
Ресей, Moscow; Moscow

M. Podzorova

Emanuel Institute of Biochemical Physics of Russian Academy of Sciences; Plekhanov Russian University of Economics

Email: terj@rambler.ru
Ресей, Moscow; Moscow

S. Karpova

Emanuel Institute of Biochemical Physics of Russian Academy of Sciences

Email: terj@rambler.ru
Ресей, Moscow

A. Krivandin

Emanuel Institute of Biochemical Physics of Russian Academy of Sciences

Email: terj@rambler.ru
Ресей, Moscow

Әдебиет тізімі

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2. Fig. 1. 1H-NMR spectra of PLA (a) and 90PLA/10NK (b) samples.

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3. Fig. 2. EPR spectra of PLA/NC samples with NC content of 0 (1), 5 (2), 10 (3) and 15 (4) wt.%.

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4. Fig. 3. Melting thermograms of PLA/NC samples with NC content of 0 (1), 5 (2), 10 (3) and 15 (4) wt.%.

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5. Fig. 4. Diffraction patterns of PLA/NC film composites with NC content of 0 (1), 5 (2), 10 (3) and 15 (4) wt.%. Transmission measurement.

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6. Fig. 5. Micrographs of PLA/NC film composites with NC content of 0 (a), 5 (b), 10 (c) and 15 (d) wt.%.

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