METHOD OF FUNCTIONALIZATION OF POLYLACTIDE PRODUCT SURFACE Russian patent published in 2018 - IPC B29C59/00 

Abstract RU 2664925 C1

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the polymer industry and can be used for medical implants and cell culture. Surface of the polylactide products is modified by functionalizing with hydroxyl groups by treating a high-frequency plasma discharge of an inert gas. Processed articles are exposed to water for at least 5 hours before exposure to the plasma at a chamber temperature in the range of 35 °C to the glass transition temperature of the polylactide used. Simultaneously, in the plasma processing chamber, a temperature in the range of -35 °C to -7 °C is maintained. Process is carried out for not more than 20 seconds.

EFFECT: increased density of functional groups on the surface of the processed product, leading to a reduction in the period of bio-integration, is provided.

1 cl, 1 ex

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RU 2 664 925 C1

Authors

Romashkin Aleksej Valentinovich

Levin Denis Dmitrievich

Petukhov Vladimir Aleksandrovich

Rozanov Roman Yurevich

Dates

2018-08-23Published

2017-12-26Filed