Topic
Divinylbenzene
About: Divinylbenzene is a research topic. Over the lifetime, 4640 publications have been published within this topic receiving 76403 citations. The topic is also known as: DVB & divinyl benzene.
Papers published on a yearly basis
Papers
More filters
TL;DR: Ordered mesoporous polymers have been prepared by replication of colloidal crystals made from silica spheres 35 nanometers in diameter by filling the pores with divinylbenzene, ethyleneglycol dimethacrylate, or a mixture of the two.
Abstract: Ordered mesoporous polymers have been prepared by replication of colloidal crystals made from silica spheres 35 nanometers in diameter. The pores in the colloidal crystals were filled with divinylbenzene (DVB), ethyleneglycol dimethacrylate (EDMA), or a mixture of the two. Polymerization and subsequent dissolution of the silica template leaves a polycrystalline network of interconnected pores. When mixtures of DVB and EDMA are used, the pore size of the polymer replicas can be varied continuously between 35 and 15 nanometers because the polymer shrinks when the silica template is removed.
632 citations
TL;DR: In this paper, a very useful approach in the preparation of polyolefin graft and block copolymers is presented, which is based on the combination of metallocene catalysts and reactive comonomers and chain transfer agents.
424 citations
TL;DR: In this paper, an organic-inorganic hybrid hollow sphere is prepared by using a TiO2-stabilized Pickering emulsion polymerization method (see figure) and colloidosomes are used as polymerization vessels to obtain the hybrid hollow spheres.
Abstract: Organic-inorganic hybrid hollow spheres are prepared by using a TiO2-stabilized Pickering emulsion polymerization method (see figure). By self-organization of TiO2 nanoparticles at the interface of oil (monomer and solvent) and water, colloidosomes are formed and used as polymerization vessels to obtain the hybrid hollow spheres. The diameter and mechanical stability can be tailored by varying the relative amount of oil phase and the relative amount of divinylbenzene (DVB) in the monomer, respectively.
360 citations
Patent•
30 Dec 2005TL;DR: In this article, the authors proposed a functionalised, cross-linked polyvinylaromatic (PVAr) which can be used as a reinforcing filler in a polymer composition, comprising a copolymer with at least: one vinylaromatic comonomer A; a comonomers B bearing function Z having formula Si - X, wherein X is a hydroxyl or hydrosable group; and a cross-linking comonomicer C which is at least bifunctional and can be polymerised by means of an addition reaction, whereby conomer
Abstract: The invention relates to nanoparticles of functionalised, cross-linked polyvinylaromatic (PVAr), which can be used as a reinforcing filler in a polymer composition, said PVAr comprising a copolymer with at least: one vinylaromatic comonomer A; a comonomer B bearing function Z having formula Si - X, wherein X is a hydroxyl or hydrosable group; and a crosslinking comonomer C which is at least bifunctional and which can be polymerised by means of an addition reaction, whereby conomer C can be vinylaromatic and, in this case, identical or different to conomoer A or non-vinylaromatic. The PVAr comprises, for example, a copolymer of styrene, ethylvinylbenzene, divinylbenzene and (meth)acrylate of trimethoxysilylpropyl, in the form of nanoshells with a diameter of between 10 and 100 nm. The PVAr filler has a very low density and, as such, can be used to reduce the weight of polymer compositions, particularly elastomers, without degradation to the reinforcement and with a notable reduction in hysteresis.
307 citations
TL;DR: In particular, relatively polar solvents that are able to transport water through the emulsion continuous phase (Ostwald ripening) are shown to produce much lower surface areas than analogous resins prepared by homogeneous solution polymerization of divinylbenzene.
Abstract: Poly(divinylbenzene) emulsion-derived (PolyHIPE) solid foams prepared with porogens (toluene, chlorobenzene, (2-chloroethyl)benzene, 1,2-dichlorobenzene, and 1-chloro-3-phenylpropane) in the oil phase have morphologies and surface areas that are strongly influenced by the nature of the porogen. For the case where the surfactant employed is Span 80, we show that the solid foam structure depends on (i) the ability of the solvent to swell the growing network, (ii) the solvent polarity, and (iii) the ability of the solvent to adsorb at the emulsion interface. In particular, relatively polar solvents that are able to transport water through the emulsion continuous phase (Ostwald ripening) are shown to produce much lower surface areas than analogous resins prepared by homogeneous solution polymerization of divinylbenzene in the presence of the solvent in question alone. The influence of Ostwald ripening is further suggested by the observation that surface area decreases with increasing emulsion aqueous phase co...
295 citations