期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 66, 期 9, 页码 1198-1204出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2005.10.001
关键词
polymer-matrix composites; infrared spectroscopy; thermogravimetric analysis; surface-initiated polymerization
Polymer nanocomposites of core-shell structure were prepared by grafting poly(methyl methacrylate) (PMMA) from TiO2 nanoparticle via the surface-initiated polymerization (SIP) strategy. A bifunctional polymerization initiator inspired by L-3,4-dihydroxyphenylalanine (DOPA), a key constituent of mussel adhesive proteins (MAPs), was designed and synthesized for use in SIP from oxide surfaces. The biomimetic initiator spontaneously adsorbed to TiO2 from aqueous solution, resulting in a colloidal initiator system with the initiator content of approximately 6.8 wt%. Subsequent in situ activation of the surface-initiated atom transfer radical polymerization (SI-ATRP) gave rise to PMMA polymer shell layers tethered to TiO2 nanoparticle cores. The results demonstrate a viable biomimetic strategy toward the preparation of polymer functionalized metal oxide nanoparticles that may be useful for construction of functional polymer nanocomposites. (c) 2005 Elsevier Ltd. All rights reserved.
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