Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites
2021
Authors:
Pergal, Marija V.Brkljačić, Jelena
Tovilović-Kovačević, Gordana
Špírkova, Milena
Kodranov, Igor D.
Manojlović, Dragan D.
Ostojić, Sanja
Knežević, Nikola Ž.
Document Type:
Article (Published version)
,
© 2020 Elsevier B.V.
Metadata
Show full item recordAbstract:
Novel polyurethane nanocomposite (PUN) materials containing different surface-functionalized mesoporous silica nanoparticles (MSNs) were prepared by in situ polymerization methodology. Polyurethane network was formed from poly (dimethylsiloxane)-based macrodiol (PDMS), 4, 4′ -methylenediphenyldiisocyanate (MDI), and hyperbranched polyester of the second pseudo-generation (BH-20; used as crosslinking agent). PU and PU/MSN nanocomposites contained equal ratios of soft PDMS and hard MDI-BH-20 segments. Non-functionalized and surface-functionalized (with 3-(trihydroxysilyl) propyl methylphosphonate (FOMSN) and 2-[methoxy (polyethyleneoxy) 6-9propyl] trimethoxysilane (PEGMSN)) MSNs were used as the nanofillers at a concentration of 1 wt%. Prepared materials were characterized by Fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical thermal analyses (DMTA), nanoindentation, equilibrium swelling and water absorption measurements. Characteristics of the prepared PUNs when in contact with a biological environment were assessed through testing their biocompatibility, protein adsorption and adhesion of endothelial cells. The favourable influence of MSNs on the physico-chemical and biological characteristics of these novel PUN materials was identified, which evidences their vast applicability potential as coatings for medical devices and implants.
Keywords:
Nanocomposite; Polyurethane network; Mesoporous silica nanoparticles; Composite characterization; Cell adhesion; CoatingsSource:
Progress in Organic Coatings, 2021, 151, 106049-Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200168 (University of Belgrade, Faculty of Chemistry) (RS-MESTD-inst-2020-200168)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200358 (BioSense Institute) (RS-MESTD-inst-2020-200358)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
- Ministry of Education, Science and Technological Development of the Republic of Serbia within Serbian-French Bilateral Project (337-00-8/2020-04)
- Grant Agency of the Czech Republic (18-03932S)
DOI: 10.1016/j.porgcoat.2020.106049
ISSN: 0300-9440