نتایج جستجو برای: phenyl modified nanosilica
تعداد نتایج: 275881 فیلتر نتایج به سال:
The main objective of the current research work is to explore effect nanosilica particles on compound EPDM/SBR-SiO2 (ethylene-propylene-diene monomer/styrene-butadiene rubber-nanosilica). composite EPDM/SBR with and without silane coupling agent was processed using an open mill mixer. are prepared in laboratory were used as reinforcing material rubber composites. cure characteristics, mechanica...
heterogeneous proton exchange membranes (pem) are synthesized using the dry phase inversion technique. the casting solutions are prepared by dispersing a finely ground cation exchange resin particle in n,n-dimethylacetamide (dmac) solution of polyvinyl-chloride (pvc). results show that ion exchange capacity is increased with the addition of 1 %-wt nanosilica (from 0.14 to 0.27 meq/g) while it i...
Erosion is one of the main factors of destruction of hydraulic structures. Therefore, soil improvement is necessary to improve soil quality and reduce soil erosion. Due to the adverse effects of substances such as lime and ash and also the increasing usage of nanotechnology in various branches of engineering sciences, using nanoparticles as new additives is an efficient way. In this study, to i...
Compared with pure silica-based or organic-polymer monoliths, hybrid organic-silica monoliths offer the combined advantages of mechanically strong stationary phases, simpler preparation protocols, resistance to swelling and shrinking in many solvents and better pH stability. Comprehensive data on the systematic characterization of the pore space morphology of hybrid organic-silica monoliths and...
Optical properties of spin-cast chitosan films were determined in the vacuum ultraviolet (VUV) through visible regions of the spectrum using spectroscopic ellipsometry. The onset of absorption in the ultraviolet was determined for chitosan films modified with succinic anhydride (SA) and glycidyl phenyl ether (GPE). This absorption was accounted for by including Gaussian and Tauc– Lorentz shaped...
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