Cross-linked polymeric and nanocomposite films based on poly(2-ethyl-2-oxazoline) and modified mineral nanoparticles of hydroxyapatite and silica have been obtained via radical cross-linking initiated by peroxide containing reactive copolymers. The influence of temperature and additional cross-linking agents on the peculiarities of curing process has been studied. The obtained results reveal that at high temperatures the dependence of film gel-fraction values on time has the extremal character. Obtained cross-linked nanocomposite films are characterized by improved physico-mechanical properties that depend on the nature of mineral nanoparticles, content of peroxide containing copolymer and on the presence of additional cross-linking agent.
1. Roy, R., Roy, R.A. & Roy, D.M. (1986). Alternative perspectives on "quasi-crystallinity": non-uniformity and nanocomposites. Materials Letters, V. 4(8-9), 323-328. doi: 10.1016/0167-577X(86)90063-7
https://doi.org/10.1016/0167-577X(86)90063-7
2. Huang T.-C., Yeh J.-M. & Lai C.-Y. (2012). Polymer nanocomposite coatings. In F. Gao (Ed.), Advances in Polymer Nanocomposites. Types and Applications. (pp. 605-638). Woodhead Publishing Limited: Cambridge.
https://doi.org/10.1533/9780857096241.3.605
3. Kango, S., Kalia, S., Celli, A., Njuguna, J., Habibi, Y., Kumar, R. (2013). Surface modification of inorganic nanoparticles for development of organic-inorganic nanocomposites - A review. Progress in Polymer Science, V. 38, 1232-1261. doi:10.1016/j.progpolymsci.2013.02.003.
https://doi.org/10.1016/j.progpolymsci.2013.02.003
4. Mulvaney, P. (2001). Not All That's Gold Does Glitter. MRS bulletin, V. 26 (12), 1009-1014. doi:10.1557/mrs2001.258.
https://doi.org/10.1557/mrs2001.258
5. Crosby, A. & Lee, J.-Y. (2007). Polymer Nanocomposites: The "Nano" Effect on Mechanical Properties. Polymer Review, V. 47 (2), 217-229. doi: 10.1080/15583720701271278
https://doi.org/10.1080/15583720701271278
6. Krasinskyi, V.V., Suberlyak, O.V., Chekailo1, M.V. & Dulebova L. (2019). Investigation of structure of nanocomposites on the basis of mixture of polypropylene and modified polyamide with using scanning electronic microscopy. Chemistry, Technology and Application of Substances, V. 2(1), 138-144. doi: 10.23939/ctas2019.01.138
https://doi.org/10.23939/ctas2019.01.138
7. Haraguchi, K. & Takehisa, T. (2002). Nanocomposite hydrogels: a unique organic-inorganic network structure with extraordinary mechanical, optical, and swelling/de-swelling properties. Advanced Materials, V.14, 1120-1124. doi:10.1016/j.cossms.2008.05.001.
https://doi.org/10.1016/j.cossms.2008.05.001
8. Zhang, Q., Zhang, L., Lin, J. (2017). Percolating behavior of nanoparticles in block copolymer host: hybrid particle-field simulations. Journal of Physical Chemistry C, V. 121(42), 23705-23715. doi: 10.1021/acs.jpcc.7b07337.
https://doi.org/10.1021/acs.jpcc.7b07337
9. Luo, X., Zhong, J., Zhou, Q., Du, S., Yuan, S, & Liu Y. (2018). Cationic reduced graphene oxide as self-aligned nanofiller in the epoxy nanocomposite coating with excellent anticorrosive performance and its high antibacterial activity. ACS Applied Materials Interfaces, V. 10 (21), 18400-18415. doi:10.1021/acsami.8b01982.
https://doi.org/10.1021/acsami.8b01982
10. Lai, J. (2014). Interrelationship between crosslinking structure, molecular stability and cytocompatibility of amniotic membranes crosslinked with glutaraldehdye of varying concentrations. RSC Advances, V. 4, 18871-18880. doi:10.1039/C4RA01930J.
https://doi.org/10.1039/C4RA01930J
11. Dulong, V., Lack, S., Le Cerf, D., Picton, L. & Muller, G. (2004). Hyaluronan-based hydrogels particles prepared by crosslinking with trisodium trimetaphosphate. Synthesis and characterization // Carbohydrate Polymers, V. 57, 1-6. doi:10.1016/ j.carbpol.2003.12.006.
https://doi.org/10.1016/j.carbpol.2003.12.006
12. Bajpai, S.K., Saxena, S.K. & Sharma, S. (2006). Swelling behavior of barium ions crosslinked bipolymeric sodium alginate-carboxymethyl guargum blend beads. Reactive Functional Polymers, V. 66, 659-666. doi:10.1016/j. reactfunctpolym.2005.10.019.
https://doi.org/10.1016/j.reactfunctpolym.2005.10.019
13. Mano, J. F. (Ed.) (2012). Biomimetic Approaches for Biomaterials Development. Weinheim: John Wiley & Sons, 573p.
https://doi.org/10.1002/9783527652273
14. Shevchuk, O.M., Bukartyk, N.M. Petrus, R.Yu. & Tokarev, V.S. (2014). Polymer nanocomposite films with embedded carbon nanotubes // Bulletin of Lviv Polytechnic National University. V. 787, 361-366. http://science.lpnu.ua/ schmt/all-volumes-and-issues/volume-787-2014/.
15. Shevchuk, O., Wagenknecht, U., Wiessner, S., Bukartyk, N., Chobit, M. & Tokarev, V. (2015). Flame-retardant polymer composites on the basis of modified magnesium hydroxide. Chemistry and Chemical Technology, V. 9(2), 149-155. doi: 10.23939/chcht09.02.149.
https://doi.org/10.23939/chcht09.02.149
16. Hoogenboom, R. (2009). Poly(2-oxazoline)s: A Polymer Class with Numerous Potential Applications. Angewandte Chemie, International Ed., V. 48(43), 7978-7994. doi: 10.1002/anie.200901607.
https://doi.org/10.1002/anie.200901607
17. Serdiuk, V.O., Shevchuk, O.M., Pereviznyk, O.B., Bukartyk, N.M. & Tokarev, V.S. (2018). Reactive peroxide macroinitiator for cross-linking biocompatible polymers. Bulletin of Lviv Polytechnic National University, 886, 226-235.
18. Vasilyev, V.P., Glus, L.S. & Gubar, S.P. (1985). Elaboration of gas-chromatography method of peroxide monomer analysis. Bulletin of Lviv Polytechnic Institute, V. 191, 24-26.
19. Toropceva, A.M., Belogorodskaya, K.V. & Bondarenko, V.M. (1972). Laboratory Training on Chemistry and Technology of High Molecular Substances. Leningrad, USSR: Khimiya.
20. Shevchuk, O.M., Bukartyk, N.M., Nadashkevych, Z.Ya. & Tokarev V.S. (2019). Synthesis and properties of silica nanoparticles with functional polymer shell. Chemistry, Technology and Application of Subatances.- V.2(1), 153-159. doi: 10.23939/ctas2019.01.153.
https://doi.org/10.23939/ctas2019.01.153
21. Shevchuk, O.M., Chobit, M.R., Bukartyk, N.M. & Tokarev V.S. (2012). Obtaining of hydroxyapatite nanoparticles with functional polymer shell. Polimerny Zhurnal, V. 34(5), 451-456
22. Colombo, A., Gherardi, F., Goidanich, S., Delaney, J.K., de la Rie, E.R., Ubaldi, M.C. & Simonutti, R. (2015). Highly transparent poly(2-ethyl-2-oxazoline)-TiO2 nanocomposite coatings for the conservation of matte painted artworks // RSC Advances, V. 5, 84879-84888. doi: 10.1039/c5ra10895k.
https://doi.org/10.1039/C5RA10895K