Technical Physics Letters
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Study of the Water Absorption Process by Aliphatic Polyesters
Dunaev A. G.
1, Minaeva S. A.1, Mironov A. V.1, Popov V. K.1, Trifanova E. M.1,2, Minaev N. V.1
1Kurchatov Complex of Crystallography and Photonics NRC "Kurchatov Institute", Moscow, Russia
2Petrovsky National Research Centre of Surgery, Moscow, Russia
2Petrovsky National Research Centre of Surgery, Moscow, Russia
Email: dunaewan@gmail.com
This study focuses on investigating the kinetics of water sorption at the early stages of the hydrolytic degradation of aliphatic polyesters (D,L-polylactides) using optical detection methods. An original experimental technique has been developed, enabling real-time analysis of the spatial and temporal distribution of water concentration within the samples. It was found that moisture penetration occurs predominantly from the surface layers of the material, gradually spreading inward. A direct correlation was demonstrated between the increase in water content and the formation of microstructural defects - pores arising as a result of polymer chain degradation. Keywords: polylactic acid, polymer resorption, water diffusion, IR radiation.
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