The ultrasonic degradation of polyacrylamide solution
Characteristics of ultrasonic degradation behavior of polyacrylamide (PAa) solutions were studied under various conditions of irradiation time, reaction temperature and reaction
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The ultrasonic degradation of polyacrylamide solution
It was found that the ultrasonic degradation of polyacrylamide solution increased with increasing irradiation time and reaction temperature but with decreasing solution
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The ultrasonic degradation of polyacrylamide
Abstract Ultrasonic processing of a water soluble polymer, polyacrylamide, is investigated and molecular weight evolution during ultrasonic degradation was monitored online by light
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The Ultrasonic Degradation of Polyacrylamide Solution
UltrasonicDegradation PolyacrylamideSolution Hsing-Yuan Yen Mu-HoeYang Department ChemicalEngineering, Kao Yuan Institute TechnologyKaohsiung County, 82101
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The ultrasonic degradation of polyacrylamide solution.
ー Art J-GLOBAL ID：200902280154382903 Reference number：02A0962795 The ultrasonic degradation of polyacrylamide solution. ポリアクリルアミド溶液の超音波劣化 Publisher site
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Effect of temperature on the ultrasonic degradation of
The ultrasonic degradation of polyacrylamide and poly (ethylene oxide) in solution was studied at different temperatures. The molecular weight distribution was determined by gel permeation
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Degradation of Polyacrylamide: A Review Scientific.Net
So, this paper reviews the lately development on the research of the degradation of polyacrylamide, especially including ultrasonic degradation, thermal degradation,
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Ultrasonic degradation of poly(acrylic acid) academia.edu
The ultrasonic degrada- a review.3 tion depends on the molecular weight, with higher Poly (acrylic acid) (PAA) is an innocuous water- molecular weight species degrading faster than soluble polymer. PAA and its derivatives find appli- lower molecular weight species.2 Furthermore, there cations in biomedicine as sensor heads for the photo- exists
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Effect of temperature on the ultrasonic degradation of
The molecular weight distribution was determined by gel permeation chromatography. Continuous distribution kinetics were used to determine the degradation rate coefficients. The degradation rate coefficient decreased with increasing temperature and was attributed to higher vapour pressure and lower viscosity at higher temperatures.
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Degradation of Polyacrylamide and Its Derivatives in
The molecular weight of these polymers can be controlled by varying the structure and concentration of the degradative agent and salt additions, the concentration, molecular weight, and composition of the initial (co)polymer, and the process temperature and time. Downloadto read the full article text REFERENCES 1.
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Ultrasonic degradation
continuous exposure to high-energy ultrasonic waves depolymerises macromolecules in solutions and produces a permanent reduction in viscosity. different factors affect the efficiency of this ultrasonic depolymerisation. in this work ultrasonic degradation of one commercially important hydrogel based on acrylic acid and acrylamide was carried out in
Get PriceLong-term degradation of dilute polyacrylamide solutions
Abstract The long-term degradation behavior of 200 wppM polyacrylamide solution was studied experimentally in a closed recirculatory flow loop at temperatures of 7.2, 25 and 87.8/degree/C. The degradation behavior was found to be strongly dependent on temperature.
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Shear-Induced Degradation of Linear Polyacrylamide
In this study, measurements of the zero shear rate viscosity of linear polyacrylamide (LPA) solutions are used to determine the LPA molecular weight before and after gel-loading. The results indicate molecular degradation in polymer solutions even when injected at minimal flow rates of 1 μL/min.
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ULTRASONIC DEGRADATION OF HYDROGELS IN
Continuous exposure to high-energy ultrasonic waves depolymerises macromolecules in solutions and produces a permanent reduction in viscosity. Different factors affect the efficiency of this ultrasonic depolymerisation. In this work ultrasonic degradation of one commercially important hydrogel based on acrylic acid and
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Mechanism of enhancement ozonation by ultrasound for
ZHANG Lei, LIU Huiling, ZHANG Bo. Mechanism of enhancement ozonation by ultrasound for degradation of polyacrylamide in ASP produced[J].CIESC Journal, 2015, 66(6): 2242-2247.
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Preparation of Polyvinylamine by the Hofmann
Polyvinylamine which contained 95.6 mol% amine units was obtained when the Hofmann degradation was applied to polyacrylamide by use of a very slight excess of sodium hypochlorite and a large excess of sodium hydroxide at 0 to −15 °C for about 15 h. Polyvinylamine hydrochloride (PVAm·HCl) was isolated almost quantitatively as a white
Get PriceBiodegradation of Polyacrylamide and Its Derivatives
The degradation of PAM/HPAM can occur in the field due to heat and ultraviolet radiation, which results in the hydrolysis of polymer and release of small amount of acrylamide monomers (Wen et al. 2010 ). Due to the high viscosity of HPAM, it forms emulsions in oil and remains stagnant, making it difficult to separate oil and water.
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The Ultrasonic Degradation of Polyacrylamide Solution
ultrasonicdegradation polyacrylamidesolution hsing-yuan yen mu-hoeyang department chemicalengineering, kao yuan institute technologykaohsiung county, 82101 taiwan, republic chinaabstract characteristics ultrasonicdegradation behavior polyacrylamide (paa) solutions were been studied under various conditions, irradiationtime, reaction
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The ultrasonic degradation of polyacrylamide solution.
ー Art J-GLOBAL ID：200902280154382903 Reference number：02A0962795 The ultrasonic degradation of polyacrylamide solution. ポリアクリルアミド溶液の超音波劣化 Publisher site Copy service Access JDreamⅢ for advanced search and analysis. Author (2)： YANG M-H ( Kao Yuan Inst. Technol., Taiwan, CHN ),YEN H-Y ( Kao Yuan Inst.
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Ultrasonic degradation of poly(acrylic acid) academia.edu
The ultrasonic degrada- a review.3 tion depends on the molecular weight, with higher Poly (acrylic acid) (PAA) is an innocuous water- molecular weight species degrading faster than soluble polymer. PAA and its derivatives find appli- lower molecular weight species.2 Furthermore, there cations in biomedicine as sensor heads for the photo- exists
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Effect of temperature on the ultrasonic degradation of
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Ultrasonic Degradation of Poly(acrylic acid) Semantic
The ultrasonic degradation of poly(acrylic acid), a water-soluble polymer, was studied in the presence of persulfates at different temperatures in binary solvent
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Ultrasonic degradation of polymers: Effect of operating
It was found that extent of degradation increases with a decrease in reaction volume and concentration at same supplied ultrasonic power. Kanwal et al. [39] also observed that as the concentration of polymer solution is increased from 1% to 15%, the rate of degradation decreased.
Get PriceUltrasonic degradation of polymer solutions—III. The
The effect of changing solvent and solution concentration @article{Price1993UltrasonicDO, title={Ultrasonic degradation of polymer solutions—III. The effect of changing solvent and solution concentration}, author={Gareth J. Price and Paul Ferris Smith}, journal={European Polymer Journal}, year={1993}, volume={29}, pages={419-424} }
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Degradation of Polyacrylamide: A Review ResearchGate
It is maybe an efficient mean to solve it with the degradation of polyacrylamide. So, this paper reviews the lately development on the research of the degradation of polyacrylamide,...
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ULTRASONIC DEGRADATION OF HYDROGELS IN
Continuous exposure to high-energy ultrasonic waves depolymerises macromolecules in solutions and produces a permanent reduction in viscosity. Different factors affect the efficiency of this ultrasonic depolymerisation. In this work ultrasonic degradation of one commercially important hydrogel based on acrylic acid and
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Effects of the pH, concentration, and solvents on the
The ultrasonic degradation of poly (vinyl alcohol) was investigated at different pHs of the solvent, in different water/solvent binary mixtures, and at different polymer concentrations. The...
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