TY - JOUR
T1 - Fabrication and characterization of TiO2-SiO2 composite nanoparticles and polyurethane/ (TiO2-SiO2) nanocomposite films
AU - Chen, Li
AU - Shen, Haixia
AU - Lu, Zhen
AU - Feng, Cang
AU - Chen, Su
AU - Wang, Yanru
PY - 2007/10
Y1 - 2007/10
N2 - TiO2-SiO2 composite nanoparticles were prepared by a sol-gel process. To obtain the assembly of TiO2 -SiO2 composite nanoparticles, different molar ratios of Ti/ Si were investigated. Polyurethane (PU)/(TiO2-SiO2) hybrid films were synthesized using the "grafting from" technique by incorporation of modified TiO2-SiO2 composite nanoparticles building blocks into PU matrix. Firstly, 3-aminopropyltriethysilane was employed to encapsulate TiO2-SiO2 composite nanoparticles' surface. Secondly, the PU shell was tethered to the TiO2 -SiO2 core surface via surface functionalized reaction. The particle size of TiO2-SiO2 composite sol was performed on dynamic light scattering, and the microstructure was characterized by X-ray diffraction and Fourier transform infrared. Thermogravimetric analysis and transmission electron microscopy (TEM) employed to study the hybrid films. The average particle size of the TiO2-SiO2 composite particles is about 38 nm when the molar ratio of Ti/Si reaches to1:1. The TEM image indicates that TiO2-SiO2 composite nanoparticles are well dispersed in the PU matrix.
AB - TiO2-SiO2 composite nanoparticles were prepared by a sol-gel process. To obtain the assembly of TiO2 -SiO2 composite nanoparticles, different molar ratios of Ti/ Si were investigated. Polyurethane (PU)/(TiO2-SiO2) hybrid films were synthesized using the "grafting from" technique by incorporation of modified TiO2-SiO2 composite nanoparticles building blocks into PU matrix. Firstly, 3-aminopropyltriethysilane was employed to encapsulate TiO2-SiO2 composite nanoparticles' surface. Secondly, the PU shell was tethered to the TiO2 -SiO2 core surface via surface functionalized reaction. The particle size of TiO2-SiO2 composite sol was performed on dynamic light scattering, and the microstructure was characterized by X-ray diffraction and Fourier transform infrared. Thermogravimetric analysis and transmission electron microscopy (TEM) employed to study the hybrid films. The average particle size of the TiO2-SiO2 composite particles is about 38 nm when the molar ratio of Ti/Si reaches to1:1. The TEM image indicates that TiO2-SiO2 composite nanoparticles are well dispersed in the PU matrix.
KW - Polyurethane/(TiO-SiO)nanocomposite hybrids
KW - Ti-O-Sibond
KW - TiO-SiO composite nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=36549002781&partnerID=8YFLogxK
U2 - 10.1007/s00396-007-1720-y
DO - 10.1007/s00396-007-1720-y
M3 - 文章
AN - SCOPUS:36549002781
SN - 0303-402X
VL - 285
SP - 1515
EP - 1520
JO - Colloid and Polymer Science
JF - Colloid and Polymer Science
IS - 13
ER -