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
A nanocomposite of MPNS/(Styrene-maleic anhydride) was prepared by the polymerization of methacryloxypropyl nano SiO2 (MPNS), styrene (ST) and maleic anhydride (MA) with benzoyl peroxide (BPO) as initiator i...A nanocomposite of MPNS/(Styrene-maleic anhydride) was prepared by the polymerization of methacryloxypropyl nano SiO2 (MPNS), styrene (ST) and maleic anhydride (MA) with benzoyl peroxide (BPO) as initiator in toluene. The prepared samples were characterized by Fourier transform infrared spectroscopy (PT-IR) and transmission electron microscope (TEM). Meanwhile, the nanocomposite was applied as a tanning agent in leather making and the results showed that leather treated with MPNS/SMA nanocomposite has excellent quality.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A nanocomposite of MPNS/(Styrene-maleic anhydride) was prepared by the polymerization of methacryloxypropyl nano SiO2 (MPNS), styrene (ST) and maleic anhydride (MA) with benzoyl peroxide (BPO) as initiator in toluene. The prepared samples were characterized by Fourier transform infrared spectroscopy (PT-IR) and transmission electron microscope (TEM). Meanwhile, the nanocomposite was applied as a tanning agent in leather making and the results showed that leather treated with MPNS/SMA nanocomposite has excellent quality.