The effects of the chemical composition of titanate nanotubes and solvent type on 3-aminopropyltriethoxysilane grafting efficiency

被引：39

作者：

Ponton, Patricia I. ^{[1
]}

d'Almeida, Jose R. M. ^{[1
]}

Marinkovic, Bojan A. ^{[1
]}

Savic, Slavica M. ^{[2
]}

Mancic, Lidija ^{[3
]}

Rey, Nicolas A. ^{[4
]}

Morgado, Edisson, Jr. ^{[5
]}

Rizzo, Fernando C. ^{[1
]}

机构：

[1] Pontificia Univ Catolica Rio de Janeiro, Dept Mat Engn, BR-22453900 Rio De Janeiro, RJ, Brazil

[2] Univ Belgrade, Inst Multidisciplinary Res, Belgrade 11030, Serbia

[3] Inst Tech Sci SASA, Belgrade, Serbia

[4] Pontificia Univ Catolica Rio de Janeiro, Dept Chem, BR-22453900 Rio De Janeiro, RJ, Brazil

[5] Petrobras SA CENPES, Ctr Res & Dev, BR-21949900 Rio De Janeiro, RJ, Brazil

来源：

APPLIED SURFACE SCIENCE | 2014年 / 301卷

关键词：

Functionalization; Titanate nanotubes; Silane coupling agents; Sodium content; Solvents; SILANE COUPLING AGENTS; SURFACE MODIFICATION; NANOPARTICLES; PARTICLES; STABILITY; CHEMISTRY; BEHAVIOR; SILICA;

D O I：

10.1016/j.apsusc.2014.02.071

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

One of the major challenges in the development of nanocomposites based on a polymer matrix and highly polar ceramic nanofillers is the lack of the compatibility between these two components. In order to improve the chemical interaction between titanate nanotubes (TINT) and polymer matrix, such as nylon 11,3-aminopropyltriethoxysilane (APTES) was grafted onto TINT. The effects of the TTNT chemical composition i.e. sodium content and solvent type on the grafting silane efficiency were thoroughly studied through CHN elemental analysis, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), surface area and zeta potential measurements. The present study brings evidences supporting aqueous ethanol as more efficient reaction medium for TTNT functionalization with APTES, independent of the sodium content of nanotubes, when compared with pure water. It is also worth noting that within aqueous ethanol medium, TTNT with low sodium content are more efficiently grafted than TTNT with high sodium content. Successful APTES grafting decreases concentration of the hydroxyl groups on TTNT surfaces and enables its future application for the fabrication of nylon 11 nanocomposites. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：315 / 322

页数：8

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