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Synthesis and characterization of comb-shaped copolymer as a filtration reducer and comparison with counterparts
A comb-shaped copolymer of 2-acrylamide-2-methyl propane sulfonic acid (AMPS), allyl polyoxyethylene ether (APEG), N-vinyl-2-pyrrolidone (NVP) and sodium styrene sulfonate (SSS) was synthesized byExpand
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[Synthesis of zinc chlorophyllin a and its preliminary clinical application].
A method for synthesis of zinc chlorophyllin a (I), a promising drug for clinical application, is presented. Taking silkworm faeces as a raw material. Chlorophyll was extracted with ethyl alcohol.Expand
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Preparation of SiO2@TiO2:Eu3+@TiO2 core double-shell microspheres for photodegradation of polyacrylamide
Recently, polyacrylamide (PAM) has been widely used in polymer flooding technology to enhance oil recovery and oil production. However, the difficulty in removing hydrolysed PAM (HPAM) fromExpand
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Synthesis and properties of acrylamide 2-acrylamido-2-methypropane sulfonic acid sodium styrene sulfonate N-vinyl pyrrolidone quadripolymer and its reduction of drilling fluid filtration at high
Abstract Acrylamide (AM), 2-acrylamido-2-methypropane sulfonic acid, sodium styrene sulfonate (SSS), and N-vinyl pyrrolidone (NVP) monomers were copolymerized via a redox initiator system toExpand
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[Synthesis and animal experiments of ethylnitrosourea].
Ethylnitrosourea (ENU) was synthesized with raw materials such as ethylamine and sodium nitrite. The product was a yellowish powder. Its melting point, solubility and infrared absorption spectrumExpand
aracterization of comb-shaped copolymer as a fi ltration reducer and comparison with counterparts
A comb-shaped copolymer of 2-acrylamide-2-methyl propane sulfonic acid (AMPS), allyl polyoxyethylene ether (APEG), N-vinyl-2-pyrrolidone (NVP) and sodium styrene sulfonate (SSS) was synthesized byExpand
Three-dimensional optical measurement of electric field in nitrobenzene
Electric field vectors have been optically measured by an He-Ne laser and electronic equipment. The electric field of the plane in which the vectors were in the same direction was mapped using theExpand