Preparation and Characterization of Organic Nano-Titanium Dioxide/Acrylate Composite Emulsions byin-situEmulsion Polymerization

Abstract

Organic nano-titanium dioxides (TiO 2 ) were prepared with tetrabutyl titanate as precursor, hydrochloric acid as catalyst and γ -methacryloxpropyltrimethoxysilane (KH-570) as modifier, and the organic nano-TiO 2 /acrylate composite emulsions were synthesized by in-situ emulsion polymerization. The structure and properties of organic nano-TiO 2 and organic nano-TiO 2 /acrylate composite emulsions were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), dynamic light scattering (DLS), thermogravimetry (TG) and transmission electron microscopy (TEM). The results showed that KH-570 was grafted successfully to the surface of nano-TiO 2 , and the crystal of organic nano-TiO 2 was anatase form, the smallest particle diameter was 10.2 nm. The organic nano-TiO 2 was dispersed averagely in the polyacrylate matrix, the composite latex particles seemed like "strawberry" and the heat resistance of the composite latex films was improved with the addition of organic nano-TiO 2 .

Synthesis of nano‐TiO2/fluorinated polyacrylate core‐shell latex and its application in fabric finishing

“…In addition, the gel rate of emulsion increased obviously when the modified nano‐TiO 2 content is more than 0.3 wt%. Similar trends of the gel rate shifts have been reported in epoxy‐acrylate copolymer/nano‐TiO 2 Pickering emulsion and nano‐TiO 2 /acrylate composite emulsions . This is because the excess modified nano‐TiO 2 particles tend not to be involved in reactions and have the aggregative trend, leading to the instability of polymerization and causing the decrease of monomer conversion and the increase of gel rate .…”

Environmentally Friendly UV-Protective Polyacrylate/TiO2 Nanocoatings

“…Polymer coatings such as polyacrylate can be protected from harmful UV radiation by the addition of pigments, UV absorbers and/or radical scavengers [ 7 , 8 , 9 ]. Due to the strong absorptivity of UV light, inorganic particles such as TiO 2 [ 8 , 9 , 10 , 11 ] and ZnO [ 12 , 13 ] are usually added to the polymer matrix to provide UV-shielding properties. The key aspect is to disperse the TiO 2 nanoparticles homogeneously in the polymer matrix to obtain the desired properties.…”

Novel Antibacterial and Toughened Carbon-Fibre/Epoxy Composites by the Incorporation of TiO2 Nanoparticles Modified Electrospun Nanofibre Veils

“…These antimicrobial functionalities can be introduced through different methods such as surface treatment or the incorporation of additives like antibiotics, biocides [29,30,31], or active agents. These agents include silver nanoparticles and nanoparticles of metals and metal oxides [32,33] such as Zn [34], Ti [28,35,36,37], Cu [38], Co [39], and combinations of Zn and Ti [40,41,42,43,44] among others [45,46]. The availability of functional nanofibers for the development of composite materials can be a great advantage in many sectors.…”