Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites

0535552 - ÚMCH 2022 RIV NL eng J - Journal Article
Pergal, M. V. - Brkljačić, J. - Tovilović-Kovačević, G. - Špírková, Milena - Kodranov, I. D. - Manojlović, D. D. - Ostojić, S. - Knežević, N. Ž.
Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites.
Progress in Organic Coatings. Roč. 151, February (2021), č. článku 106049. ISSN 0300-9440. E-ISSN 1873-331X
R&D Projects: GA ČR(CZ) GA18-03932S
Institutional support: RVO:61389013
Keywords : nanocomposite * polyurethane network * mesoporous silica nanoparticles
OECD category: Polymer science
Impact factor: 6.206, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0300944020312601?via%3Dihub

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.
Permanent Link: http://hdl.handle.net/11104/0314186