Prospects for Using Styrene-Isobutylene-Styrene (SIBS) Triblock Copolymer as a Cusp Material for Leaflet Heart Valve Prostheses: Evaluation of Physicochemical and Mechanical Properties
- Авторы: Rezvova M.A.1, Ovcharenko E.A.1, Nikishev P.A.2,3, Kostyuk S.V.2,3,4, Glushkova T.V.1, Trebushat D.V.5, Chernonosova V.S.6, Shevelev G.Y.6, Klyshnikov K.Y.1, Kudryavtseva Y.A.1, Barabash L.S.1
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Учреждения:
- Research Institute of Complex Problems of Cardiovascular Diseases
- Research Institute of Physicochemical Problems
- Belarussian State University
- Institute of Regenerative Medicine
- OOO Angiolain
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch
- Выпуск: Том 92, № 1 (2019)
- Страницы: 9-19
- Раздел: Macromolecular Compounds and Polymeric Materials
- URL: https://journals.rcsi.science/1070-4272/article/view/216229
- DOI: https://doi.org/10.1134/S1070427219010026
- ID: 216229
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Аннотация
Search for promising polymer materials as a base for cusps of leaflet heart valve prostheses is a topical problem from the viewpoint of limited durability of fixed biological material. For this purpose, styrene-isobutylene-styrene (SIBS) triblock copolymer was prepared by controlled cationic polymerization. The synthesized SIBS is characterized by the number-average molecular mass Mn = 33 000 and narrow monodisperse molecular-mass distribution (Mw/Mn = 1.3). The ultimate strength of the polymer film was lower than that of xenopericard and ePTFE in the longitudinal direction by a factor of 3.30 and 6.36, respectively (p < 0.05); it was lower than that of ePTFE in the transverse direction by a factor of 4.58 (p < 0.05) and did not differ significantly (p = 0.65) from that of xenopericard in the transverse direction. The relative elongation and Young’s modulus of the SIBS film exceeded those of ePTFE and xenopericard in the longitudinal direction by a factor of 3.00 and 5.68 and in the transverse direction by a factor of 6.50 and 3.86, respectively (p < 0.05). The contact angle for different sides of the SIBS film was 101.6° ± 2.9°/104.4° ± 0.9°. According to the data of atomic force microscopy, the height difference on the SIBS surface usually did not exceed 1 µm, with separate pits of 20–40 µm size. The results of studying the physical properties of the surface and the mechanical properties determining the primary biocompatibility factors in comparison with control materials show that SIBS polymers are promising for making leaflet heart valve prostheses.
Об авторах
M. Rezvova
Research Institute of Complex Problems of Cardiovascular Diseases
Автор, ответственный за переписку.
Email: rezvovamaria@mail.ru
Россия, Kemerovo, 650002
E. Ovcharenko
Research Institute of Complex Problems of Cardiovascular Diseases
Email: rezvovamaria@mail.ru
Россия, Kemerovo, 650002
P. Nikishev
Research Institute of Physicochemical Problems; Belarussian State University
Email: rezvovamaria@mail.ru
Белоруссия, Minsk, 220030; Minsk, 220030
S. Kostyuk
Research Institute of Physicochemical Problems; Belarussian State University; Institute of Regenerative Medicine
Email: rezvovamaria@mail.ru
Белоруссия, Minsk, 220030; Minsk, 220030; Moscow, 119146
T. Glushkova
Research Institute of Complex Problems of Cardiovascular Diseases
Email: rezvovamaria@mail.ru
Россия, Kemerovo, 650002
D. Trebushat
OOO Angiolain
Email: rezvovamaria@mail.ru
Россия, Novosibirsk, 630090
V. Chernonosova
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch
Email: rezvovamaria@mail.ru
Россия, Novosibirsk, 630090
G. Shevelev
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch
Email: rezvovamaria@mail.ru
Россия, Novosibirsk, 630090
K. Klyshnikov
Research Institute of Complex Problems of Cardiovascular Diseases
Email: rezvovamaria@mail.ru
Россия, Kemerovo, 650002
Yu. Kudryavtseva
Research Institute of Complex Problems of Cardiovascular Diseases
Email: rezvovamaria@mail.ru
Россия, Kemerovo, 650002
L. Barabash
Research Institute of Complex Problems of Cardiovascular Diseases
Email: rezvovamaria@mail.ru
Россия, Kemerovo, 650002
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