نتایج جستجو برای: styrene monomer
تعداد نتایج: 26244 فیلتر نتایج به سال:
The origin of the improved performance Molecular Imprinted Polymers (MIPs) prepared by Nitroxide-Mediated Radical Deactivation Reversible Polymerization (NMRP) and conventional Free (FRP) was investigated through a detailed interpretation adsorption onto imprinted- non-imprinted materials. MIPs designed for 3,5-dichlorohydroxyacetophenone (DCHA) were copolymers methacrylic acid styrene cross-li...
A series of polyether-based diblock copolymers were synthesized by sequential organocatalytic ring-opening polymerization (ROP) either hexene oxide (HO) or octene (OO) as the first monomer with propylene (PO) second monomer. In addition, one triblock terpolymer OO, PO, and styrene (SO) was following same method. The ROP catalyzed triethyl borane (TEB)/(phosphazene base t-BuP2) eicosanol initiat...
In this work, a new solid phase extraction method for the determination of chromium species in water samples by electrothermal atomic absorption spectrometry was developed. For selective separation Cr(III) ions under dynamic conditions, two ion imprinted polymers containing Cr(III)-1,10-phenanthroline complex (Cr(III)-phen) were prepared with use one (styrene, ST) or (styrene and 4-vinylpyridin...
In this work, a fundamental kinetic model based upon the Hougen–Watson non-porosity formalism was derived and used to simulate dehydrogenation and oxidation axial flow reactors. In addition, partial pressure profiles of components during styrene production process inside porous catalyst were obtained using Dusty-Gas model. The preservation equations are adopted to calculate temperature and flow...
A mechanistic interpretation of the [(1,10-phenanthroline)Pd(CH(3))(CH(3)CN)](+)[BArF](-) (1a) and [(2,2'-bipyridine)Pd(CH(3))(CH(3)CN)](+)[BArF](-) (1b) (BArF = 3,5-(CF(3))(2)-C(6)H(3)) catalyzed perfectly alternating copolymerization of styrenes with CO is reported. The copolymerization in CH(2)Cl(2) or chlorobenzene has been found to be first order in styrene and inverse first order in CO co...
Abstract Overuse of polymer products has led to severe environmental problems, which are threatening survival creatures on earth. It is urgent tackle enormous wastes with proper cycling methods. Pyrolysis polymers into high-value chemicals and fuels displaying great potential address the white pollution issue. In this study, we focus chemical recycling polystyrene, an important in our everyday ...
The influences of nanosilica and modified on cure, compression set, mechanical swelling characteristics are studied in blends ethylene-propylene-diene monomer (EPDM)/styrene-butadiene rubber (SBR). In EPDM/SBR composites, the made from rice husk ash (RHA) was utilised as a reinforcing nanofiller. interaction between matrix at interface is crucial for production composites. This study uses bis[3...
A tung oil (TO) based monomer for rigid thermosetting polymer was synthesized, characterized, and copolymerized with styrene in this study. Tung oil was alcoholyzed with pentaerythritol (PER) to get tung oil pentaerythritol alcoholysis products (TOPER), and the optimized conditions were explored according to the yields of TOPER analyzed by gas chromatography-mass spectrometry (GC-MS). The resul...
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