Abstract
The results of studies involving the innovative TiO2-SiO2/Ph-POSS hybrid were presented. An inorganic TiO2-SiO2oxide composite was precipitated from an emulsion media. The functionalisation of surface for the obtained composite was carried out with the use of TriSilanolPhenyl POSS (Ph-POSS) and a silane coupling agent—phenyltrimethoxysilane (PTMS). Electrokinetic and physicochemical as well as structural characteristics of obtained hybrids were evaluated. The zeta potential value has been determined, which provides relevant information regarding the interactions between colloid particles. Measurement of the zeta potential values allowed for an indirect assessment of stability for the studied hybrid fillers. In the next step, the degree of dispersion and surface morphology were evaluated based on the obtained particle size distribution curves and TEM images. The hydrophilic-hydrophobic character of the surface was assessed by analysing the wettability profiles. The modification degree of the TiO2-SiO2oxide composite was evaluated based on the infrared spectroscopy studies (FT-IR). Determination of the parameters of the porous structure was conducted by determining the specific surface area and the total volume and mean size of pores. Thermogravimetric measurements (TGA) were also carried out in order to measure the changes in sample mass as a function of temperature.
Highlights
IntroductionScientists work on the new organicinorganic hybrid materials called silsesquioxanes
Since the last decade, scientists work on the new organicinorganic hybrid materials called silsesquioxanes
Nanoparticles in dispersive systems exhibit a notable tendency to agglomerate, this process may be successfully controlled by measuring the zeta potential and analysing the particle size distribution curves [23,24,25]
Summary
Scientists work on the new organicinorganic hybrid materials called silsesquioxanes. Polyhedral oligosilsesquioxanes (POSS) are considered a novel class of compounds with a general formula of (RSiO1.5)n or RnTn, where R may stand for hydrogen, alkyl, aryl or other functional organic group. POSS is an intermediate product between silica (SiO2) and silicone (R2SiO) with a particle size ranging from several to dozens of nanometers, and its properties are determined by its composition and the type of organic substituents [2,3,4]. Numerous researchers proved that POSS may be successfully used for obtaining novel hybrid materials [9]. In our previously published researches, Ambrozewicz et al obtained hybrid materials based on magnesium silicate and POSS compounds. The inorganic matrix (MgO-SiO2) was obtained according to the previously proposed method, described in [13]. The presented method in article [14] results confirmed that such products are thermally stable at the temperature of 600∘C, which enables their use as fillers in the plastics industry
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