Trifluoroethanol and19F Magic Angle Spinning Nuclear Magnetic Resonance as a Basic Surface Hydroxyl Reactivity Probe for Zirconium(IV) Hydroxide Structures

Langmuir ◽  
2011 ◽  
Vol 27 (15) ◽  
pp. 9458-9464 ◽  
Author(s):  
Jared B. DeCoste ◽  
T. Grant Glover ◽  
Gregory Mogilevsky ◽  
Gregory W. Peterson ◽  
George W. Wagner
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Surface Hydroxyl ◽  
Angle Spinning ◽  
Nuclear Magnetic

Synthesis of calcium silicate hydrate/polymer complexes: Part II. Cationic polymers and complex formation with different polymers

1999 ◽  
Vol 14 (8) ◽  
pp. 3389-3396 ◽  
Author(s):  
Hiroyoshi Matsuyama ◽  
J. Francis Young
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Cationic Polymers ◽  
Polymer Complexes ◽  
Angle Spinning ◽  
Nuclear Magnetic

Some high molecular weight cationic polymers, poly(diallyldimethylammonium chloride) (PDC) and poly(4-vinylbenzyltrimethylammonium chloride) (PVC), have been incorporated into the calcium silicate hydrate (C–S–H) structure during precipitation of quasicrystalline C–S–H from aqueous solution. Expansion of the interlayer spacing [0.9 nm (PDC), 1.5 nm (PVC)] and a high-carbon content provided evidence that these polymers were intercalated between layers of C–S–H when Ca/Si <1.0. Intercalation characteristic properties strongly depended on both of the type of polymer and Ca/Si ratio in C–S–H. Poly(4-vinyl-1-methylpyridinium bromide) and methyl glycol chitosan (iodide) also interacted with C–S–H, probably by surface adsorption. The C–S–H/polymer complexes were examined by Fourier transform infrared spectroscopy, 29Si nuclear magnetic resonance magic angle spinning, and 13C cross-polarization, magic angle spinning nuclear magnetic resonance spectroscopy. Mechanisms of intercalation of different kinds of polymers between the C–S–H layers are discussed.

Sign in / Sign up

Export Citation Format

Share Document