Silane coupling agent was used to introduce polymerizable groups onto the surface of nano-SiO 2 particles. Then in-situ polymerization was carried out between the functionalized particles and methacrylic acid monmer t...Silane coupling agent was used to introduce polymerizable groups onto the surface of nano-SiO 2 particles. Then in-situ polymerization was carried out between the functionalized particles and methacrylic acid monmer to accomplish the surface modification of nano-SiO 2. Analysis of FTIR?TEM and TGA results show that methacrylic acid is grafted onto the surface of functionalized particles and the modified particles were stable. Contact angle measurement demonstrated that the modified particles were wetted by toluene completely and the contact angle with water was 105 ℃, indicating that the hydrophilic surface has been transfered to hydrophobic via the modification.展开更多
The binary and ternary rare earth terbium(Ⅲ) complexes were introduced into the styrene/ α methylacrylic acid copolymerization system, and some optical resins that possess a high transparency in visible light region...The binary and ternary rare earth terbium(Ⅲ) complexes were introduced into the styrene/ α methylacrylic acid copolymerization system, and some optical resins that possess a high transparency in visible light region were obtained. The study of the optical property showed that they have good luminescent properties such as a high luminous intensity and a long luminous lifetime. In addition, we investigated the relationship among the transparency, the luminescent property of the copolymer, and the content of the components in the polymeric system. The results indicated that the optical resins can provide a relatively stable environment for composite rare earth complexes, which is good to exhibit the luminescent properties of rare earth complexes. At the same time, the rare earth complexes can offer the transparent resin a novel function.展开更多
文摘Silane coupling agent was used to introduce polymerizable groups onto the surface of nano-SiO 2 particles. Then in-situ polymerization was carried out between the functionalized particles and methacrylic acid monmer to accomplish the surface modification of nano-SiO 2. Analysis of FTIR?TEM and TGA results show that methacrylic acid is grafted onto the surface of functionalized particles and the modified particles were stable. Contact angle measurement demonstrated that the modified particles were wetted by toluene completely and the contact angle with water was 105 ℃, indicating that the hydrophilic surface has been transfered to hydrophobic via the modification.
文摘The binary and ternary rare earth terbium(Ⅲ) complexes were introduced into the styrene/ α methylacrylic acid copolymerization system, and some optical resins that possess a high transparency in visible light region were obtained. The study of the optical property showed that they have good luminescent properties such as a high luminous intensity and a long luminous lifetime. In addition, we investigated the relationship among the transparency, the luminescent property of the copolymer, and the content of the components in the polymeric system. The results indicated that the optical resins can provide a relatively stable environment for composite rare earth complexes, which is good to exhibit the luminescent properties of rare earth complexes. At the same time, the rare earth complexes can offer the transparent resin a novel function.
