Modification of Hydroxyapatite with Polymer Brushes

Abstract:

The synthesis of polymer brushes containing poly (methyl methacrylate) (PMMA) chains grafted from hydroxyapatite (HAP) particles was disscussed. Surface of commercially available hydroxyapatite was first modified with atom transfer radical polymerization (ATRP) initiator and hydrophobized with isobutyric acid, and then surface-initiated ATRP was conducted. Properties of obtained hybrids were studied by dynamic light scattering (DLS) and gel permeation chromatography (GPC). Polymers with various molecular weight up to M_n=96,100 g/mol were obtained with good control;M_w/M_n<1.2. Copolymer brushes of poly (methyl methacrylate-stat-benzophenone methacrylate) (P(MMA-stat-BPMA) were also synthesized and cross-linking ability of such materials under UV radiation was confirmed.

• Periodical: Materials Science Forum (Volume 714)
• Pages: 291-295
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.714.291
• Online since: March 2012
• Authors: Błażej Włodarczyk, Joanna Pietrasik, Marian Zaborski
• Keywords: ATRP, Hydroxyapatite (HAP), Methyl Methacrylate, Polymer Brushes

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