Facile fabrication of superhydrophobic raspberry‐like SIO₂/polystyrene composite particles

Abstract

A facile and novel strategy was reported on the fabrication of raspberry‐like SiO2/polystyrene (SiO2/PS) composite particles by emulsion polymerization in the presence of vinyl‐functionalized silica (vinyl‐SiO2) particles, which were prepared via a one‐step sol–gel process using vinyltriethoxysilane as the precursor. The submicron vinyl‐SiO2 particles were used as the core, and nanosized PS particles were then adsorbed onto the vinyl‐SiO2 particles to form raspberry‐like composite particles during the polymerization process. The composition, morphology, and structure of the vinyl‐SiO2 particles and the SiO2/PS hybrid particles were characterized by thermogravimetric analysis, nuclear magnetic resonance, Fourier transform infrared spectroscopy, transmission electron microscopy, and scanning electron microscopy. Superhydrophobic surface can be constructed by directly depositing the raspberry‐like SiO2/PS composite particles on glass substrate, and the water contact angle can be adjusted by the styrene/SiO2 weight ratio. In addition, the superhydrophobic film possessed a strong adhesive force to pin water droplet on the surface even when the film was turned upside down. POLYM. COMPOS., 2013. © 2012 Society of Plastics Engineers

Studies of Different Properties of Polystyrene‐Asphaltene Composites

“…[4][5][6] Composites based on polystyrene as the polymer matrix has been reported in the literature owing to its ease of process ability and characterization. [7,8] The fillers like inorganic materials, organic moieties, nanoparticles, natural and synthetic fibers were already been utilized to prepare polystyrene composites.…”

Facile fabrication of raspberry-like composite microspheres for the construction of superhydrophobic films and applications in highly efficient oil–water separation

“…[36][37][38][39][40][41][42][43] In most cases, inorganic/organic raspberry-like microspheres were used in assemble superhydrophobic coatings. [44][45][46][47][48] A variety of methods have been developed for the successful fabrication of these samples. 47,49,50 The silica-coated or titania-coated raspberry-like microspheres was usually obtained by acid-base interaction, electrostatic interaction between the silanol groups and the functional groups on templates.…”

Fabrication of fluorinated raspberry particles and their use as building blocks for the construction of superhydrophobic films to mimic the wettabilities from lotus leaves to rose petals

“…Examples of such applications include the transport of liquid micro droplets over a surface without sliding or rolling, 39 micro sample tissue engineering and biological analysis, 44 microfluidic chips, 44 "mechanical hands" 45 and so on. 16,28,32,47,48 In 2012, Wang et al developed a strategy for the fabrication of superhydrophobic coatings with strong adhesion to water from RPs with a submicron SiO 2 core that was decorated by nano-sized polystyrene latex particles via γ-ray radiation-induced miniemulsion polymerization of styrene in the presence of 3-methacryloxypropyltrimethoxysilane (MPS)-functionalized SiO 2 particles. 16,46 Raspberry-like particles have shown great applications in the fabrication of superhydrophobic surfaces due to their inherent dual-size hierarchical structures and surface roughness.…”

“…16,46 Raspberry-like particles have shown great applications in the fabrication of superhydrophobic surfaces due to their inherent dual-size hierarchical structures and surface roughness. 48 Recently, Neto et al described a multiple step approach for the preparation of superhydrophobic coatings with rose petal-like properties from RPs that were produced via heterocoagulation. 47 Nevertheless, to the best of our knowledge, there are currently only five reports describing the preparation of RP-based superhydrophobic surfaces that exhibit the 'rose petal effect'.…”