Superhydrophobicity of silica nanoparticles modified with polystyrene

Sun, Xin; Fan, Zhenzhong; Zhang, L.D.; Wang, L.; Wei, Zefei; Wang, X.Q.; Liu, W.L.

doi:10.1016/j.apsusc.2010.09.094

Cited by 39 publications

(11 citation statements)

References 29 publications

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“…Up until now, many polymerization techniques have been adapted for the preparation of polymer/silica nanocomposites, including conventional free radical [18], controlled/living radical polymerization (CLRP) [19][20][21], anionic [22], and cationic [23] polymerizations. To achieve optimum control over the structures of hybrids, CLRP techniques, because of their ability to prepare welldefined, narrow-polydispersity-index (PDI) polymers with versatile architectures, are preferred over the other methods.…”

Section: Introductionmentioning

confidence: 99%

A study on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization

et al. 2012

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A number of batch polymerizations were performed to study the effect of pristine nanoparticle loading on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization. In order to improve the dispersion of silica nanoparticles in PMMA matrix, the silanol groups of the silica are functionalized with methyl methacrylate groups and modified nanoparticles were used to synthesize PMMA/modified silica nanocomposites via RAFT polymerization. Prepared samples were characterized by thermogravimetric analysis (TGA), dynamic light scattering (DLS), dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and gel permeation chromatography (GPC). According to results, introduction of modified nanoparticles results in better thermal and mechanical properties than those of pristine nanoparticles. Also, surface modification and increasing silica nanoparticles result in variation of thermal degradation behavior of nanocomposites. The best improvement of mechanical and thermophysical properties is achieved for nanocomposites containing 7 wt. % silica nanoparticles.

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Section: Introductionmentioning

confidence: 99%

A study on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization

et al. 2012

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“…Spherical vinyl‐functionalized silica particles (vinyl‐SiO 2 ) were prepared by co‐condensation of TEOS and VTES. The method was modified from a previous report . Briefly, 150 mL of EtOH and 24 mL of NH 4 OH were mixed at 60°C to form a homogeneous solution.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of highly durable and reusable superabsorbent core–shell particles

Maijan

Chantarak

2019

Polymer Engineering & Sci

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Superabsorbent core-shell particles were synthesized via a two-step process. A silica core was prepared by cocondensation of tetraethyl orthosilicate and vinyl triethoxysilane. The vinyl-functionalized silica particles were then polymerized with acrylamide monomer via freeradical polymerization to yield silica-polyacrylamide (PAM) hybrid particles. The crosslinking density and porosity of PAM on the hybrid particles were controlled by adjusting the concentration of the crosslinker, n,n 0 -methylenebisacrylamide (MBA). The structure of core-shell particles was confirmed by scanning and transmission electron microscopy techniques. The hybrid particles with 3.0%MBA could absorb water up to 70 g/g. These hybrid particles also removed 80% of methylene blue from solution within 24 h and this efficacy was maintained for seven cycles. The weight remaining of the hybrid particles after nine cycles was higher than that of pure PAM after three cycles indicating the high durability and reusability of the core-shell particles. POLYM. ENG. SCI., 60:306-313, 2020.

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“…Two different methods can be employed, including postgrafting [12,[16][17][18] referring to covalent crosslink between the synthesized silica particles and coupling agents and one-step co-condensation of tetraalkoxysilane and organosilane precursors [19,20]. Most of the researches prepared the polymers/SiO 2 nanocomposites by functionalizing the nano-silica surface via postgrafting method.…”

Section: Introductionmentioning

confidence: 99%

Preparation of vinyl silica-based organic/inorganic nanocomposites and superhydrophobic polyester surfaces from it

Shen

Wang

et al. 2015

Colloid Polym Sci

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A fluoropolymer/silica (FP/SiO 2 ) organic-inorganic nanocomposite was synthesized by copolymerization of butyl acrylate (BA), methyl methacrylate (MMA), 2-hydroxyethyl acrylate (HEA), and dodecafluoroheptyl methacrylate (DFMA) based on vinyl nano-silica (V-SiO 2 ) using emulsion polymerization. The V-SiO 2 was prepared via water-based solgel reaction with vinyl trimethoxy silane (VTMS) as the precursor in the presence of the composite surfactant. The preparation of V-SiO 2 , influence of the composite surfactant on VSiO 2 , effect of composite emulsifier on the properties of FP/ SiO 2 , and the formation of the FP/SiO 2 nanocomposite were analyzed. The resulting V-SiO 2 and FP/SiO 2 were characterized by particle size analyzer, transmission electron microscopy (TEM), Fourier-transform infrared spectrometry (FTIR), and X-ray photoelectron spectroscopy (XPS). The obtained FP/ SiO 2 nanocomposites were applied to coat onto the flexible polyester fabrics by dip-pad-cure process. The results showed that the V-SiO 2 nanoparticles had been introduced into the FP/ SiO 2 nanocomposites and superhydrophobic polyester surfaces were achieved by the cooperation of the rough surface structure provided by the silica nanoparticles and the low surface energy caused by fluoropolymer.

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Superhydrophobicity of silica nanoparticles modified with polystyrene

Cited by 39 publications

References 29 publications

A study on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization

A study on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization

Synthesis and characterization of highly durable and reusable superabsorbent core–shell particles

Preparation of vinyl silica-based organic/inorganic nanocomposites and superhydrophobic polyester surfaces from it

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