Year: 2013
Journal: Journal of Materials Science October 2013, Volume 48, Issue 20, pp 7055-7062, 20131004
Authors: Solmaz Bayati 1 7, Ramón Pamies 2 3, Sondre Volden 4, Kaizheng Zhu 1, Anna-Lena Kjøniksen 5 6, Wilhelm R. Glomm 4, Bo Nyström 1
Last authors: Bo Nyström
Organizations: 1. Department of Chemistry, University of Oslo, Blindern, P.O. Box 1033, 0315, Oslo, Norway 2. Departamento de Ingeniería de Materiales y Fabricación, Regional Campus of International Excellence “Campus Mare Nostrum”, Technical University of Cartagena, Murcia, Spain 3. Departamento de Química Física, University of Murcia, Murcia, Spain 4. Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology, 7491, Trondheim, Norway 5. Faculty of Engineering, Østfold University College, 1757, Halden, Norway 6. Department of Pharmaceutics, School of Pharmacy, University of Oslo, Blindern, P.O. Box 1068, 0316, Oslo, Norway 7. Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, 221 00, Lund, Sweden
Country: Sverige, Sweden, Norway, Spain
The adsorption of a series of four poly(N-isopropylacrylamide)-based copolymers composed of a hydrophilic block of methoxy poly(ethylene glycol) (MPEG) with a variable length and a PNIPAAM block of fixed size (MPEG n -b-PNIPAAM71) onto flat and spherical citrate-coated gold surfaces has been investigated. The adsorption onto planar surfaces was studied by means of the quartz crystal microbalance with dissipation monitoring, whereas polymer adsorption onto gold nanoparticles was examined using dynamic light scattering and visible spectroscopy. Experiments were performed with two different concentrations of polymer in bulk solution, namely 0.05 and 0.0005 wt%. The influence of the MPEG length on the thickness of the adsorbed layer on the nanoparticles, and the adsorbed mass onto the planar surfaces were recorded at different temperatures.
