Porous polymer compositions based on mixed colloidal suspensions under ultrasonic dispersion and microwave heating

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Дәйексөз келтіру

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Аннотация

A new method for mixing solutions and suspensions containing thermodynamically immiscible dispersion media based on the use of ultrasonic dispersion and thermally stimulated microwave heating has been proposed. The results of a study of a number of functional composites obtained by mixing solutions of biodegradable polymers in chloroform with aqueous suspensions of natural polymers are presented. The possibility of obtaining polymer composites doped with magnetic nanoparticles and drugs by this method is considered. It has been established that the proposed method of mixing makes it possible to combine suspensions of polymers of different nature in the composition of composites suitable for creating porous, hygroscopic and magnetically controlled materials for biomedical and environmental applications.

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Авторлар туралы

V. Gorshenev

Emanuel Institute of Biochemical Physics, Russian Academy of Sciences

Email: lina.invers@gmail.com
Ресей, Moscow

I. Maklakova

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: lina.invers@gmail.com
Ресей, Москва

M. Yakovleva

Emanuel Institute of Biochemical Physics, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: lina.invers@gmail.com
Ресей, Moscow

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2. Fig. 1. Porous sample of collagen/hydroxyapatite composite obtained using the first scheme of liquid phase removal.

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3. Fig. 2. Micrographs of samples formed on the water surface as a result of microwave heating of suspensions: a – sample of PHB fibers, b – sample of PHB fibers doped with dye (tetraphenylporphyrin).

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4. Fig. 3. a – Absorption spectra of chlorin on the second day of incubation of polymer composite samples; b – dependence of chlorin release from composite samples on incubation time in a buffer solution at a temperature of 37 °C; 1 – sample PCL + PVP + chlorin, 2 – sample PLA + PVP + chlorin.

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5. Fig. 4. a – External appearance of a foamed sample of copolymer F-62 after drying, b – electron micrograph of a section of a copolymer sample.

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6. Fig. 5. Electron micrographs of samples of the initial copolymer F-62 (a, b) and its composite with magnetic particles (c, d) after microwave treatment.

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7. Fig. 6. Samples of PAG composite with fluoroplastic: a – gel after swelling in a solution of cobalt chloride, b – sample after placement in a solution of NaBH4.

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