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Preparation of high molecular weight homopolymer polyacrylamide

epareseleniumnanoparticles. Sodiumcarboxymethylcellulose (CMC) hadbeenusedinsynthesisprocess. Theinfluencefactorsonthepreparation. suchasreactiontime. temperature'materialconcentra-tion. andultrasonic. hadbeenstudied. ThemorphologiesoftheproductswerecharacterizedbyUV-absorption,[link widoczny dla zalogowanych], TEM · SEMandXRD. Itwasfoundthatseleniumnanospheres. seleniumnanowiresandseleniumnanorodscouldbeobtainedingivingcondition. Keywords: sodiumcarboxymethylcellulose; seleniumnanoparticles; synthesize; characterize (on the next 258 pages) [6] Jiang abnormally thick, Fumio Kimura. [P]. Japan's public square 2-86603,1990 · [5] SmetG,[link widoczny dla zalogowanych], WoodwardA. [J]. JPolymSci, 1954,[link widoczny dla zalogowanych], I4: I26 a I27. SynthesisofhighmolecularweightpolyacrylamidebyhomopolymerizationHUANGLi-ming, WUQin (SchoolofChemicalEngineering.SouthChinaUniversityofTechnology.Guangzhou510640 · China) Abstract: Inthepaper. usinganewcombinedinitiatingsystem, bifunctionalredoxsystemandotherinitiations · topolymerizeacrylamidewithhomopolymerizationposthydrolysisprocessandlowinitiatingtemperature. highmolecularweightpolyacrylamidewassynthesized. Manyfactorsinthepolymerizationandhydrolysisarestudied, andoptimumprocessparametersareobtained. Polymeri-zationconditions: monomerconcentration0.0042mol / g, doublenitrogen0.34% o, Span a 2020mg / L. urea400mg / L, temperature3 ℃ · redoxinitiating10mg / L. EDTA60mg / L. natriumformate10mg / L. molecularweightwas2.062 × 10. Hydrolysisconditions: tam-perature90 ℃. urea500mg / L. hydrolysisgrade30%. colloidcontent12%. NP-10200mg / L,[link widoczny dla zalogowanych], hydrosistime3. Oh,[link widoczny dla zalogowanych], molecularweightwas2.262 × 10. Keywords: acryamide; bifunctional; homopolymerization; posthydrosis

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