文献类型：期刊文献

英文题名：Surface modification of hydroxyapatite with poly(methyl methacrylate) via surface-initiated ATRP

作者：Wang, Yan[1];Zhang, Xi[1];Yan, Jinliang[1];Xiao, Yan[1];Lang, Meidong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat,Shanghai Key Lab Adv Polyme, Shanghai 200237, Peoples R China

年份：2011

卷号：257

期号：14

起止页码：6233

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20111313872992);WOS:【SCI-EXPANDED(收录号:WOS:000288646900052)】；

基金：This research was supported by the Fundamental Research Funds for the Central Universities (WD0913008), "Shu Guang" Project of Shanghai Municipal Education Commission, Changjiang Scholars and Innovative Research Team in University (IRT0825).

语种：英文

外文关键词：ATRP; Nanocomposites; Hydroxyapatite; Poly(methyl methacrylate)

摘要：This article describes the fabrication of hydroxyapatite (HAP) nanocomposites grafted with poly(methyl methacrylate) (PMMA). Surface-initiated atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was carried out from hydroxyapatite particles derivatized with ATRP initiators. The structure and properties of the nanocomposites were investigated by thermogravimetric analysis (TGA), transmission electron microscopy (TEM), differential scanning calorimeter (DSC) measurements, and contact angle analyses. TGA was used to estimate the grafting density of ATRP initiators (0.49 initiator/nm(2)) and the amount of grafted PMMA on the HAP surface. The contact angle analyses indicated that grafting PMMA onto the HAP surface dramatically increased the hydrophobicity of the surface. Moreover, the HAP nanocomposites showed excellent dispersibility in both aqueous solution and organic solvent. (C) 2011 Elsevier B. V. All rights reserved.