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    3·Polyacrylamide has good thermal stability and is easily soluble in cold water. The viscosity and concentration of its aqueous solution approximate a logarithmic relationship (that is, a linear relationship). Acrylamide (PAM) has a very high viscosity, and its aqueous solution has a good tolerance to electrolytes. ...

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    1·Polyacrylamide is a homopolymer of acrylamide or a polymer copolymerized with other monomers. Polyacrylamide (PAM) is one of the most widely used varieties of water-soluble polymers. 2·Polyacrylamide is widely used in petroleum extraction, papermaking, water treatment, textile, medicine, agriculture and other industries.

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    Polyacrylamide PAM Description. Polyacrylamide PAM, with the chemical formula of (C3H5NO)n and the CAS NO. of 9003-05-8, is a linear polymer. Polyacrylamide polymer has good thermal stability, can be dissolved in water in any proportion, and the aqueous solution is a uniform and transparent liquid. PAM is one of the most widely used water …

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  • Polyacrylamide degradation and its implications

    2018-9-7 · Pei, Y., et al. Investigation of the degradation and stability of acrylamide-based polymers in acid solution: Functional monomer modified polyacrylamide. Petroleum 2 , 399–407 (2016). Article ...

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    3·Polyacrylamide has good thermal stability and is easily soluble in cold water. The viscosity and concentration of its aqueous solution approximate a logarithmic relationship (that is, a linear relationship). Acrylamide (PAM) has a very high viscosity, and its aqueous solution has a good tolerance to electrolytes. ...

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  • Theoretical studies of hydrolysis and stability of ...

    2015-11-1 · Abstract. Thermal stability of water-soluble polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers under various solution conditions have been studied utilizing Quantum Mechanics Density Functional Theory (DFT) computational modeling method. The hydrolysis reaction of the amide group (AM) to …

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  • Polyacrylamide degradation and its implications

    2018-9-7 · Pei, Y., et al. Investigation of the degradation and stability of acrylamide-based polymers in acid solution: Functional monomer modified polyacrylamide. Petroleum 2 , 399–407 (2016). Article ...

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  • Hydrolysis and thermal stability of partially

    Partially hydrolyzed polyacrylamide (HPAM) is the water‐soluble polymer most often used in flooding applications in the petroleum industry. However, in aqueous solutions at high temperatures, HPAM undergoes hydrolysis of the lateral amide groups, and the presence of salts in the solution can lead to precipitation of this polymer.

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    3·Polyacrylamide has good thermal stability and is easily soluble in cold water. The viscosity and concentration of its aqueous solution approximate a logarithmic relationship (that is, a linear relationship). Acrylamide (PAM) has a very high viscosity, and its aqueous solution has a good tolerance to electrolytes. ...

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    Thermodynamic stability of polyacrylamide and poly(N,N‐dimethyl acrylamide) ... Thermal degradation to form a radical would require the cleavage of carbon–carbon bonds in the polymer chain; the energy needed for this cleavage was found to depend on the structure of the repeat unit which ranged from low of 72.5 kcal for a rare head‐to ...

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    2021-7-7 · Alibaba.com에서 고품질의 식품 Pam 제조사와 식품 Pam 출처를 명시하기. raw material oil food grade water treatment acrylamide polymer powder nonionic cationic anionic polyacrylamide apam pam 발송 준비 US40.00-US44.00 백 20 백 (최소 주문량) 1 YRS (1) 66.7% 공급업체에 문의하기 계량 펌프 AKS603 PAC PAM Flocculant...

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    Partially hydrolyzed polyacrylamide (HPAM) is the water‐soluble polymer most often used in flooding applications in the petroleum industry. However, in aqueous solutions at high temperatures, HPAM undergoes hydrolysis of the lateral amide groups, and the presence of salts in the solution can lead to precipitation of this polymer.

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  • A comprehensive review of polyacrylamide

    2015-8-1 · A comprehensive review of polyacrylamide polymer gels for conformance control Baojun Bai 1, *, Jia Zhou 2 , Mingfei Yin 1 1. Missouri University of Science and Technology, Rolla 65409, USA; 2. BASF Corporation, Houston 77802, USA Abstract: Polymer gels have been designed and successfully applied to improve sweep efficiency …

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  • thermal stability of high molecular weight

    2021-5-14 · Thermal stability of high-molecular-weight polyacrylamide . The above reported data show that temperature affects the stability of commercial polyacrylamide solutions in two different ways: hydrolysis process of amide groups,which is pH and temperature dependent. molecular weight degradation process which is strngly …

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  • Polyacrylamide - Stability | Technology Trends

    Stability. In dilute aqueous solution, such as is commonly used for Enhanced Oil Recovery applications, polyacrylamide polymers are susceptible to chemical, thermal, and mechanical degradation.Chemical degradation occurs when the labile amine moiety hydrolyzes at elevated temperature or pH, resulting in the evolution of ammonia and a …

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    2021-5-25 · oil soluble oilfield anionic polyacrylamide polymer bangladesh | Buy Waste Water Treatment Agent at factory price. Application of Polyacrylamide (PAM) used in oil field Polyacrylamide has good thermal stability; it is easily soluble in cold water, but its solubility in organic solvents is generally limited. This is undoubtedly very convenient ...

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  • Thermal stability of high-molecular-weight

    ConclusionThe above reported data show that temperature affects the stability of commercial polyacrylamide solutions in two different ways:hydrolysis process of amide groups,which is pH and temperature dependent.molecular weight degradation process which is strngly dependent on the presence of both oxygen and residual impurities. The …

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    2021-7-7 · Alibaba.com에서 고품질의 식품 Pam 제조사와 식품 Pam 출처를 명시하기. raw material oil food grade water treatment acrylamide polymer powder nonionic cationic anionic polyacrylamide apam pam 발송 준비 US40.00-US44.00 백 20 백 (최소 주문량) 1 YRS (1) 66.7% 공급업체에 문의하기 계량 펌프 AKS603 PAC PAM Flocculant...

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    Hydrolysis and thermal stability of partially hydrolyzed Partially hydrolyzed polyacrylamide (HPAM) is the water‐soluble polymer most often used in flooding applications in the petroleum industry. However, in aqueous solutions at high temperatures, HPAM undergoes hydrolysis of the lateral amide groups, and the presence of salts in the ...

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    2019-7-15 · We provide Cationic Polyacrylamide safety data sheets view and download at Echemi.com. ... Stability and reactivity 10.1 Reactivity . no data available. 10.2 Chemical stability . ... Certified factory Echemi go to the factory and do a serious actual investigation. If the factory meets requirement, it can get logo of certified factory.

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    2019-4-19 · Highly stretchable silica/polyacrylamide (PAM) nanocomposite hydrogels were synthesized via in situ free radical polymerization in the presence of silica nanoparticles. The effect of particle size and content of silica nanoparticles on tensile properties and swelling behavior were investigated. The hydrogen bond between PAM …

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    The stability mechanism and thermal properties of the system alumina–anionic polyacrylamide (PAM) was studied. The polymer’s adsorption properties in dependence on the following parameters solution pH (in the range 3–9), temperature (in the range 15–35 °C), and carboxyl groups’ content in the PAM chains (in the range 5–30 %) were ...

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    2016-7-20 · 35 .SA. The thermal stability of PHPA solution was evaluatged in a Parr pressure reactor at ap-propriate temperature. The completely formulated muds were pre-pared using the synthesized PHPA as viscosifier, polyanionic cellulose (PAC) or carboxy methyl cellulose (CMC) as fluid loss controlling agent, and sodium salt of sulphonated …

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    Drag reducers (DRs) have a significant effect on shale hydraulic fracturing. Hence, it is very essential to develop excellent DRs for engineering applications. In this work, a novel nanocomposite drag reducer (PASD-SiO2) was synthesized using acrylamide (AM), sodium 4-styrenesulfonate (SSS), dimethylhexadeyl

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    To determine the suitability as a time−temperature indicator for dielectric pasteurization processes, the thermal stability (50−75 °C) of Aspergillus oryzae α-amylase immobilized in polyacrylamide gel in phosphate buffer, mashed potatoes, and minced shrimp was examined. Changing the cross-linking agent concentration from 3.3 to 5.3% and adding 2% salt did not markedly affect the thermal …

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    Patcharin, R., T. Juming, and A. R. Barbara, “Thermal stability of α-amylase from Aspergillus oryzae entrapped in polyacrylamide gel”, J. Agri. Food Chem. 51: 5462-5466, 2003. has been cited by the following article: ... (BSA) as a modifier was used with glutaraldehyde as a binder to study the activity and thermal stability of ...

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