نتایج جستجو برای: nipam polymer
تعداد نتایج: 93135 فیلتر نتایج به سال:
Gold nanoparticles (*40 nm in diameter) were encapsulated by a hydrogel overlayer generated by the free radical polymerization of N-isopropylacrylamide-co-acrylic acid (NIPAM-co-AA), which was promoted by a specifically designed radical initiator covalently anchored to the surface of the gold core. The size and morphology of the shell/core nanoparticles were characterized by scanning electron m...
in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...
در این پایان نامه یک مدل برآورد هزینه های ادواری جهت برآورد هزینه عرشه های ساخته شده از ترکیبات fiber reinforced polymer(frp) ارائه شده است. این مدل تمامی هزینه های کارفرما، هزینه های بهره بردار و هزینه های طرف سوم را در جهت تخمین و برآورد هزینه های ادواری عرشه های frp در دوره عمر مفید پل در نظر می گیرد.
Random copolymer gels of N-isopropylacrylamide (NIPAM) and N-ethylacrylamide (NEAM) were synthesized using a 1 : 1 monomer molar ratio in different methanol–water (xm 1⁄4 0, 0.06, 0.13, 0.21, 0.31 0.43, 0.57, 0.76, where xm 1⁄4 mole fraction of methanol) mixtures. The samples were characterized using different techniques like Fourier transform infrared spectroscopy (FTIR), scanning electron mic...
Experimental Section Materials. N-Isopropylacrylamide (NIPAM, 97%, Tokyo Kasei Kagyo Co.) was purified by recrystallization from a mixture of benzene and n-hexane (1/3, v/v). Styrene (St, 99.5%, Beijing Chemical Factory) was successively washed with aqueous NaOH (5.0 wt %) and water, then distilled over CaH 2 at reduced pressure. 4-Chloro-7-nitrobenzofurazan (NBD-Cl, 99%), 2,3,3-trimethylindole...
The application of intelligent materials in drilling fluids has greatly reduced the investment human resources and effectively made up for shortcomings traditional fluids, such as insufficient directivity, poor adaptive ability difficult monitoring. Therefore, research is a valuable direction future oil gas industry. In this study, temperature-sensitive modified bentonite NIPAM-B developed by P...
We developed a robust nanosecond photonic crystal switching material by using poly(N-isopropylacrylamide) (PNIPAM) nanogel colloidal particles that self-assemble into crystalline colloidal arrays (CCAs). The CCA was polymerized into a loose-knit hydrogel which permits the individual embedded nanogel PNIPAM particles to coherently and synchronously undergo their thermally induced volume phase tr...
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