Prospects for Using Styrene-Isobutylene-Styrene (SIBS) Triblock Copolymer as a Cusp Material for Leaflet Heart Valve Prostheses: Evaluation of...
Rezvova M. A., Ovcharenko E. A., Nikishev P. A., Kostuk S. V., Glushkova T. V., Trebushat D. V., Chernonosova V. S., Shevelev G. Y., Klyshnikov K. Y., Kudryavtseva Y. A., Barabash L. S.
Russian Journal of Applied Chemistry
Vol.92, Issue1, P. 9-19
Опубликовано: 2019
Тип ресурса: Статья
DOI:10.1134/S1070427219010026
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 M n = 33 000 and narrow monodisperse molecular-mass distribution (M w /M n = 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
Ключевые слова:
mechanical properties; poly(styrene-block-isobutylene-block-styrene); polymeric heat valve prostheses; polytetrafluoroethylene
Язык текста: Английский
ISSN: 1608-3296
Rezvova M. A.
Ovcharenko E. A.
Nikishev P. A.
Kostuk S. V. Sergej Viktorovich 1977-
Glushkova T. V.
Trebushat D. V.
Chernonosova V. S.
Shevelev G. Y.
Klyshnikov K. Y.
Kudryavtseva Y. A.
Barabash L. S.
Резвова М. А.
Овчаренко Е. А.
Никишев П. А.
Костюк С. В. Сергей Викторович 1977-
Глушкова Т. В.
Требушат Д. В.
Черноносова В. С.
Шевелев Г. Y.
Клyшников К. Y.
Кудрявцева Y. А.
Барабаш Л. С.
Prospects for Using Styrene-Isobutylene-Styrene (SIBS) Triblock Copolymer as a Cusp Material for Leaflet Heart Valve Prostheses: Evaluation of Physicochemical and Mechanical Properties
Prospects for Using Styrene-Isobutylene-Styrene (SIBS) Triblock Copolymer as a Cusp Material for Leaflet Heart Valve Prostheses: Evaluation of...
Текст визуальный непосредственный
Russian Journal of Applied Chemistry
Pleiades Publishing, Ltd.
Vol.92, Issue1 P. 9-19
2019
Статья
mechanical properties poly(styrene-block-isobutylene-block-styrene) polymeric heat valve prostheses polytetrafluoroethylene
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 M n = 33 000 and narrow monodisperse molecular-mass distribution (M w /M n = 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