TY - JOUR
T1 - Dendritic carbosilane-based macrophotoinitiator
T2 - Synthesis, characterization, and photoinitiating behavior
AU - Wang, Sheng Jie
AU - Fan, Xiao Dong
AU - Liu, Xiang
AU - Kong, Jie
AU - Liu, Yu Yang
AU - Wang, Xin
PY - 2007/6
Y1 - 2007/6
N2 - A novel radical dendritic macrophotoinitiator, bearing alkyl pheone moieties linked to the surface of the dendrimer, was synthesized via alcoholysis of carbosilane dendrimer and the small-molecule photoinitiator 2-hydroxy-2-methyl-1-(4-tert-butyl)phenylpropane-1-one. The structure of the dendritic carbosilane-based macrophotoinitiator (MPI) was characterized using Fourier transform infrared spectroscopy, 1H NMR, 13C NMR 29Si NMR, elemental analysis, size exclusion chromatography/multi-angle laser light scattering, UV-visible spectroscopy, and differential photocalorimetry (DPC). UV-visible analysis indicates that the absorption band of photosensitive moieties shifts towards high wavelength by introducing the carbosilane dendrimer core. The DPC results demonstrate that the initiating efficiency of MPI is effective when using epoxy acrylate (EA) as a model resin. Furthermore, thermogravimetric analysis of cured EA resin indicates that the thermal stability can be improved markedly by the incorporation of MPI in the curing formulation.
AB - A novel radical dendritic macrophotoinitiator, bearing alkyl pheone moieties linked to the surface of the dendrimer, was synthesized via alcoholysis of carbosilane dendrimer and the small-molecule photoinitiator 2-hydroxy-2-methyl-1-(4-tert-butyl)phenylpropane-1-one. The structure of the dendritic carbosilane-based macrophotoinitiator (MPI) was characterized using Fourier transform infrared spectroscopy, 1H NMR, 13C NMR 29Si NMR, elemental analysis, size exclusion chromatography/multi-angle laser light scattering, UV-visible spectroscopy, and differential photocalorimetry (DPC). UV-visible analysis indicates that the absorption band of photosensitive moieties shifts towards high wavelength by introducing the carbosilane dendrimer core. The DPC results demonstrate that the initiating efficiency of MPI is effective when using epoxy acrylate (EA) as a model resin. Furthermore, thermogravimetric analysis of cured EA resin indicates that the thermal stability can be improved markedly by the incorporation of MPI in the curing formulation.
KW - Carbosilane dendrimer
KW - Differential photocalorimetry
KW - Macrophotoinitiator
KW - Thermal stability
KW - Ultraviolet curing
UR - http://www.scopus.com/inward/record.url?scp=34249014013&partnerID=8YFLogxK
U2 - 10.1002/pi.2205
DO - 10.1002/pi.2205
M3 - 文章
AN - SCOPUS:34249014013
SN - 0959-8103
VL - 56
SP - 764
EP - 772
JO - Polymer International
JF - Polymer International
IS - 6
ER -