Novel antifouling self-healing poly(carboxybetaine methacrylamide-co-HEMA) nanocomposite hydrogels with superior mechanical properties

0397101 - ÚMCH 2014 RIV GB eng J - Článek v odborném periodiku
Kostina, Nina Yu. - Sharifi, S. - de los Santos Pereira, Andres - Michálek, Jiří - Grijpma, D. W. - Rodriguez-Emmenegger, Cesar
Novel antifouling self-healing poly(carboxybetaine methacrylamide-co-HEMA) nanocomposite hydrogels with superior mechanical properties.
Journal of Materials Chemistry B. Roč. 1, č. 41 (2013), s. 5644-5650. ISSN 2050-750X. E-ISSN 2050-7518
Grant CEP: GA AV ČR KAN200520804; GA ČR GA13-00939S; GA ČR GAP205/12/1702; GA ČR GAP106/12/1451; GA ČR GBP205/12/G118
Institucionální podpora: RVO:61389013
Klíčová slova: hydrogels * self-healing * antifouling
Kód oboru RIV: CD - Makromolekulární chemie

Novel antifouling highly wettable hydrogels with superior mechanical and self-healing properties are presented. Hydrogels were prepared by UV-initiated copolymerisation of non-fouling zwitterionic carboxybetaine methacrylamide (CBMAA-3) and 2-hydroxyethyl methacrylate (HEMA) in the presence of uniformly dispersed clay nanoparticles (Laponite XLG) in water. The nanoparticles acted as physical cross-linkers resulting in excellent mechanical resistance. The effects of composition such as the amount of nanoclay and the HEMA/CBMAA-3 molar ratio on the physical properties of the nanocomposite hydrogels were investigated. These gels showed outstanding composition-dependent mechanical properties, exhibiting remarkably large elongations at break (≥1800%) and high strengths and moduli even at higher molar contents of CBMAA-3 and higher degrees of swelling (DS). Furthermore, these hydrogels were able to repair mechanical damage without the use of any healing agent by spontaneous reconstruction of cross-links across a damaged interface.
Trvalý link: http://hdl.handle.net/11104/0225881