In Vitro Biocompatibility Evaluation of Novel Urethane–Siloxane Co-Polymers Based on Poly(ϵ-Caprolactone)- block-Poly(Dimethylsiloxane)- block-Poly(ϵ-Caprolactone)
2012
Аутори:
Pergal, Marija V.Antić, Vesna V.
Tovilović-Kovačević, Gordana
Brkljačić, Jelena
Vasiljević-Radović, Dana
Djonlagić, Jasna
Тип документа:
Чланак у часопису (Рецензирана верзија)
,
© 2011 by Taylor & Francis Ltd
Метаподаци
Приказ свих података о документуАпстракт:
Novel polyurethane co-polymers (TPUs), based on poly(ε-caprolactone)-block-poly(dimethylsiloxane)-block-poly(ε-caprolactone) (PCL-PDMS-PCL) as soft segment and 4,4′-methylenediphenyl diisocyanate (MDI) and 1,4-butanediol (BD) as hard segment, were synthesized and evaluated for biomedical applications. The content of hard segments (HS) in the polymer chains was varied from 9 to 63 wt%. The influence of the content and length of the HS on the thermal, surface, mechanical properties and biocompatibility was investigated. The structure, composition and HS length were examined using 1H- and quantitative 13CNMR spectroscopy. DSC results implied that the synthesized TPUs were semicrystalline polymers in which both the hard MDI/BD and soft PCL-PDMS-PCL segments participated. It was found that an increase in the average HS length (from 1.2 to 14.4 MDI/BD units) was accompanied by an increase in the crystallinity of the hard segments, storage moduli, hydrophilicity and degree of microphase separation of the co-polymers. Depending on the HS content, a gradual variation in surface properties of co-polymers was revealed by FTIR, AFM and static water contact angle measurements. The in vitro biocompatibility of co-polymers was evaluated using the endothelial EA.hy926 cell line and protein adsorption on the polyurethane films. All synthesized TPUs adsorbed more albumin than fibrinogen from multicomponent protein mixture, which may indicate biocompatibility. The polyurethane films with high HS content and/or high roughness coefficient exhibit good surface properties and biocompatible behavior, which was confirmed by non-toxic effects to cells and good cell adhesion. Therefore, the non-cytotoxic chemistry of the co-polymers makes them good candidates for further development as biomedical implants.
Напомена:
This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Biomaterials Science, Polymer Edition on 08 May 2012, available at: https://doi.org/10.1163%2F092050611X589338
Кључне речи:
Segmented polyurethanes; biocompatibility; surface properties; α,ω-dihydroxy-(PCL-PDMS-PCL); endothelial cellsИзвор:
Journal of Biomaterials Science: Polymer Edition, 2012, 23, 13, 1629-1657Финансирање / пројекти:
- Синтеза и карактеризација нових функционалних полимера и полимерних нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172062)
DOI: 10.1163/092050611X589338
ISSN: 0920-5063
PubMed: 21888759