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Modification of the Collagen Tissue of the Bioprothesis of Heart Valves in a Solution of Carbonic Acid: Effect of Pressure on Adsorption of Chitosan and the Structure of the Tissueстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 14 августа 2019 г.
- Авторы: Chashchin I.S., Bakuleva N.P., Chernysheva M.G., Badun G.A., Anuchina N.M., Abramchuk S.S., Nikitin L.N.
- Журнал: Materials Science Forum
- Том: 935
- Год издания: 2018
- Издательство: TRANS TECH PUBLICATIONS LTD
- Местоположение издательства: LAUBISRUTISTR 24, STAFA-ZUERICH,SWITZERLAND, CH-8712
- Первая страница: 100
- Последняя страница: 107
- DOI: 10.4028/www.scientific.net/MSF.935.100
- Аннотация: For the first time the influence of pressure of chitosan solutions in carbonic acid on the adsorption of chitosan onto a collagen tissue of biological heart-valve prostheses and on the structure of the resulting biocomposite was studied. It turned out that the dependence of an amount of the chitosan adsorbed onto the collagen tissue has bell-shaped form reaching a maximum adsorption of about 0.8 weight. % at 30-40 MPa and then falling to 0.3 wt. % with further pressure increase up to 50 MPa. It was found that this treatment leads to a significant change of the morphology of the tissue surface which depends on the pressure in the system. It was also revealed that under pressure growth collagen fibrils are compacted in the tissue bulk which leads to the extrusion of the polymer embedded in the collagen matrix.
- Добавил в систему: Чащин Иван Сергеевич
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