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Modification of silica nanoparticles and their application in UDMA dental polymeric composites
Author(s) -
Du Minhui,
Zheng Ying
Publication year - 2007
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20377
Subject(s) - materials science , composite material , nanocomposite , nanoparticle , dispersion (optics) , compatibility (geochemistry) , silane , surface modification , filler (materials) , chemical engineering , nanotechnology , physics , engineering , optics
Abstract Advancements in nanocomposites are highly dependent on the compatibility between the organic matrix and inorganic fillers, and the dispersion level of fillers throughout the matrix. Silane coupling agents are widely used to change the chemical structure of particles' surface in order to improve their compatibility and dispersion properties of particles. SiO 2 nanoparticles were modified by ζ potential, turbidity, and relative viscosity. The results indicate that the stability and dispersion degree in organic solvents have been improved after the modification. In addition, the mechanical properties of composites with modified silica were also studied, which indicated that, after the predispersion of particles in organic media, the mechanical properties of materials could be improved, even at low filler content. POLYM. COMPOS., 28:198–207, 2007. © 2007 Society of Plastics Engineers