Polydopamine Nanoparticle for Poly(N-Isopropylacrylamide)-Based Nanocomposite Hydrogel with Good Free-Radical-Scavenging Property

Abstract:

Nanocomposite hydrogels (NC gels) consisting of poly (N-Isopropyl acrylamide) (pNIPAM)/polydopamine nanoparticles (PDAPs) were prepared by in-situ-free-radical polymerization of N-isopropyl acrylamide in the presence of modified PDAP in aqueous solution. The composition of the NC gels could be controlled directly by altering the composition of the initial reaction mixture. The lower critical solution temperature (LCST) of the NC gels were studied by DSC, and the LCST of both of pure pNIPAM hydrogel and NC gels was at 34°C. Besides, the NC gels showed superior antioxidant property, and the ability to scavenge activity of NC gel was up to 70% with the addition of 6 wt% modified PDAP into pNIPAM.

• Periodical: Materials Science Forum (Volume 848)
• Pages: 94-98
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.848.94
• Online since: March 2016
• Authors: Shu Qiang Xiong, Yan Wang, Jing Zhu, Zu Ming Hu, Jun Rong Yu
• Keywords: NC Gels, Polydopamine, Radical Scavenging Activity

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