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Pietrzykowska E, Romelczyk-Baishya B, Chodara A, Koltsov I, Smogór H, Mizeracki J, Pakieła Z, Łojkowski W. Microstructure and Mechanical Properties of Inverse Nanocomposite Made from Polylactide and Hydroxyapatite Nanoparticles. MATERIALS 2021; 15:ma15010184. [PMID: 35009328 PMCID: PMC8745816 DOI: 10.3390/ma15010184] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/16/2021] [Accepted: 12/18/2021] [Indexed: 12/29/2022]
Abstract
Polymer nanocomposites have been extensively researched for a variety of applications, including medical osteoregenerative implants. However, no satisfactory solution has yet been found for regeneration of big, and so-called critical, bone losses. The requirement is to create a resorbable material which is characterised by optimum porosity, sufficient strength, and elastic modulus matching that of the bone, thus stimulating tissue regrowth. Inverse nanocomposites, where the ceramic content is larger than the polymer content, are a recent development. Due to their high ceramic content, they may offer the required properties for bone implants, currently not met by polymer nanocomposites with a small number of nanoparticles. This paper presents inverse nanocomposites composed of bioresorbable nano crystalline hydroxyapatite (HAP NPs) and polylactide (PLLA), produced by cryomilling and a warm isostatic pressing method. The following compositions were studied: 25%, 50%, and 75% of HAP NPs by volume. The mechanical properties and structure of these composites were examined. It was discovered that 50% volume content was optimal as far as compressive strength and porosity are concerned. The inverse nanocomposite with 50% nanoceramics volume displayed a compressive strength of 99 ± 4 MPa, a contact angle of 50°, and 25% porosity, which make this material a candidate for further studies as a bioresorbable bone implant.
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Affiliation(s)
- Elżbieta Pietrzykowska
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (A.C.); (I.K.); (J.M.); (W.Ł.)
- Correspondence: ; Tel.: +48-22-228-760
| | - Barbara Romelczyk-Baishya
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland; (B.R.-B.); (Z.P.)
| | - Agnieszka Chodara
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (A.C.); (I.K.); (J.M.); (W.Ł.)
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland; (B.R.-B.); (Z.P.)
| | - Iwona Koltsov
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (A.C.); (I.K.); (J.M.); (W.Ł.)
| | - Hilary Smogór
- NETZSCH Instrumenty, Halicka 9, 31-036 Krakow, Poland;
| | - Jan Mizeracki
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (A.C.); (I.K.); (J.M.); (W.Ł.)
| | - Zbigniew Pakieła
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland; (B.R.-B.); (Z.P.)
| | - Witold Łojkowski
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (A.C.); (I.K.); (J.M.); (W.Ł.)
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Lishchynskyi O, Stetsyshyn Y, Raczkowska J, Awsiuk K, Orzechowska B, Abalymov A, Skirtach AG, Bernasik A, Nastyshyn S, Budkowski A. Fabrication and Impact of Fouling-Reducing Temperature-Responsive POEGMA Coatings with Embedded CaCO 3 Nanoparticles on Different Cell Lines. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1417. [PMID: 33804043 PMCID: PMC8001162 DOI: 10.3390/ma14061417] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/28/2021] [Accepted: 03/10/2021] [Indexed: 12/11/2022]
Abstract
In the present work, we have successfully prepared and characterized novel nanocomposite material exhibiting temperature-dependent surface wettability changes, based on grafted brush coatings of non-fouling poly(di(ethylene glycol)methyl ether methacrylate) (POEGMA) with the embedded CaCO3 nanoparticles. Grafted polymer brushes attached to the glass surface were prepared in a three-step process using atom transfer radical polymerization (ATRP). Subsequently, uniform CaCO3 nanoparticles (NPs) embedded in POEGMA-grafted brush coatings were synthesized using biomineralized precipitation from solutions of CaCl2 and Na2CO3. An impact of the low concentration of the embedded CaCO3 NPs on cell adhesion and growth depends strongly on the type of studied cell line: keratinocytes (HaCaT), melanoma (WM35) and osteoblastic (MC3T3-e1). Based on the temperature-responsive properties of grafted brush coatings and CaCO3 NPs acting as biologically active substrate, we hope that our research will lead to a new platform for tissue engineering with modified growth of the cells due to the release of biologically active substances from CaCO3 NPs and the ability to detach the cells in a controlled manner using temperature-induced changes of the brush.
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Affiliation(s)
- Ostap Lishchynskyi
- Department of Organic Chemistry, Lviv Polytechnic National University, St. George’s Square 2, 79-013 Lviv, Ukraine;
| | - Yurij Stetsyshyn
- Department of Organic Chemistry, Lviv Polytechnic National University, St. George’s Square 2, 79-013 Lviv, Ukraine;
| | - Joanna Raczkowska
- Department of Organic Chemistry, Lviv Polytechnic National University, St. George’s Square 2, 79-013 Lviv, Ukraine;
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland; (K.A.); (S.N.); (A.B.)
| | - Kamil Awsiuk
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland; (K.A.); (S.N.); (A.B.)
| | - Barbara Orzechowska
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland;
| | - Anatolii Abalymov
- Department of Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (A.A.); (A.G.S.)
| | - Andre G. Skirtach
- Department of Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (A.A.); (A.G.S.)
| | - Andrzej Bernasik
- Faculty of Physics and Applied Computer Science, AGH—University of Science and Technology, Al. Mickiewicza 30, 30-049 Kraków, Poland;
| | - Svyatoslav Nastyshyn
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland; (K.A.); (S.N.); (A.B.)
| | - Andrzej Budkowski
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland; (K.A.); (S.N.); (A.B.)
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