Study of Modification Mechanism of Ultrafine Silica Modified by PAMAM

Jin Tao

doi:10.4028/www.scientific.net/AMM.217-219.252

Paper Titles

Solid State Chemical Reaction Synthesis and Characterization of Nanocrystalline Cerium Oxalate under Ultrasonication Spectra
p.230

Application of Tetragonal Nano-Zirconia in Ceramic Teeth
p.235

Effect of Starting Powders on Microstructure and Properties of Silicon Nitride Nanoceramics
p.239

Production of Nano NiO Particle with Chemical Precipitation Method and their Characteristics
p.245

Study of Modification Mechanism of Ultrafine Silica Modified by PAMAM
p.252

Size-Controlled Synthesis of Magnetite Nanoparticles from Iron Acetate by Thermal Decomposition
p.256

Preparation and Characterization Nano-Cellulose and its Surface Modification by Silane Coupling Agent
p.260

Polyethersulfone Composites Reinforced by Silica Nanoparticles
p.264

Preparation and Application Study of Nano-Sized Organic Bentonite Used for Composite Flame Retardant
p.268

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219Study of Modification Mechanism of Ultrafine...

Study of Modification Mechanism of Ultrafine Silica Modified by PAMAM

Abstract:

Ultrafine silicon dioxide were modified by -NH2-teminated poly(amido-amine) (PAMAM) dendrimers to improve their dispersibility in the coatings. The modification mechanism was studied through density functional theory (DFT) in the gas phase. Virous initial configurations of ion bound to PAMAM were established to investigate the structures and the energetics of the complexes. Two stable conformers are found: types A ( is bound to the amine site) and C ( is bound to the amide site). Types A and C indicate the chemical bond formation of Si-N and Si-O, respectively.

You might also be interested in these eBooks

Advanced Materials and Process Technology

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

252-255

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.252

Citation:

Cite this paper

Online since:

November 2012

Authors:

Jin Tao

Keywords:

Configuration, Density Function Theory (DFT), Polyamidoamine, Ultrafine Silicon Dioxide

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] A.M. Kartal, C. Erkey, J. Supercrit. Fluids., 53 (2010), pp.115-120.

Google Scholar

[2] L. E. Bourgeat, J. Lang, J. Colloid Interface Sci., 293 (1998), pp.197-202.

Google Scholar

[3] D. A. Tomalia, H. Baker, J. Dewald, M. Hall, G. Kallos, J. Roeck, J. Ryder, P. Smith, J. Polym (Tokyo). 11 (1985), pp.117-132.

DOI: 10.1295/polymj.17.117

Google Scholar

[4] N. Tsubokawa, H. Ichioka, T. Satoh, React. Funct. Polym., 37(1998), pp.75-82.

Google Scholar

[5] S.Yoshikawa, T.Satoh, N.Tsubokawa. Colloids Surf. A., 153(1999), pp.395-399.

Google Scholar

[6] T.V. Francisco, P.B. Balbuena, J. Phys. Chem. A., 111 (2007), p.945.

Google Scholar

[7] B. Fubini, Health effects of silica. The Surface Properties of Silicas; Legrand, A. P., Ed.; Wiley: New York, 1998.

Google Scholar

[8] R. Schrader, R. Wissing, H. Kubsch, Z. Anorg. Allg. Chem., 365 (1969), p.191.

Google Scholar

[9] J. Narayanasamy, J. D. Kubicki, J. Phys. Chem. B., 109 (2005), pp.21796-21807. 10] R.J. Qu, Y.Z. Niu, C.M. Sun, C.N. Ji, Microporous Mesoporous Mater. 97 (2006), pp.58-65.

Google Scholar