Just fill in the form below, click submit, you will get the price list, and we will contact you within one working day. Please also feel free to contact us via email or phone. (* is required).

nonionic polyacrylamide thermal stability in azerbaijan

  • Simultaneous thermal analysis of cationic, nonionic

    2019-12-1 · In contrast simultaneous thermal analysis can be applied to determine the effective PAM content in smectite-PAM composites. At the same time, information on the thermal stability of PAM and of smectite-PAM composites are available. Tutas et al. (1987) studied the decomposition of polyacrylamide (PAM) up to 600 °C under N 2 using simultaneous ...

    Get Price
  • Evaluation of High Molecular Weight Nonionic ...

    2020-9-17 · model of gelation time, and the compatibility, microstructure, thermal stability, and plugging capacity of this gel system were evaluated for water control treatment. 2. Materials and Methods 2.1. Materials The nonionic polyacrylamide (NPAM) was purchased from Guangzhou Shuirun Chemical

    Get Price
  • Investigation of the degradation and stability of ...

    2016-12-1 · In order to observe the stability of acrylamide-based polymers in acid, the above four types of prepared polymers were assembled into eight polymer solutions (two replications of each polymer type), with viscosity ranging from 10 to 30 cp. Hydrochloric acid was then added to the eight polymer solutions to comprise 1 wt% HCl and 10 wt% HCl solutions for each polymer solution.

    Get Price
  • Nonionic Polyacrylamide Available Top Quality at Best

    2015-11-1 · The NPAM gel has good shearing stability and thermal stability which can be cross-linked in high salinity and temperature reservoirs. The “–COO − ” group in the NPAM polymer reacts with multiple alkylations (–CH 2 OH) of the phenolic ring to form a dense three-dimensional gel network structure in the gelation process and porous media.

    Get Price
  • Experimental study and application of gels formed by ...

    The above reported data show that temperature affects the stability of commercial polyacrylamide solutions in two different ways: The first process that increases the anionic character of polymers is responsible for the viscosity loss in the presence of monovalent salts and for eventual precipitation in the presence of divalent salts even if the molecular weight is not changed.Such a process ...

    Get Price
  • Thermal stability of high-molecular-weight

    We have investigated the effect of temperature on the chemical (hydrolysis) and thermal (molecular weight) stability of purified polyacrylamide solution.From viscosity and light scattering data we show that no polymer degradation due to oxygen contamination results from heating polymer solutions although higher temperature is responsible for hydrolysis of amide groups.

    Get Price
  • Thermal stability of polyacrylamide solutions: effect of ...

    2019-12-12 · The object of this study was to investigate the thermal decomposition of cationic (PAM S,τ40 Cl), nonionic (PAM° S), and anionic (NaPAM S,τ40) polyacrylamide under synthetic air (SynA) in detail using a thermogravimetry/differential scanning calorimetry (TG/DSC) system connected to a quadrupole mass spectrometer (MS).

    Get Price
  • Simultaneous thermal analysis of cationic, nonionic

    2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and …

    Get Price
  • Polyacrylamide degradation and its implications in ...

    We hypothesized that the thermal stability of Moloney murine leukaemia virus reverse transcriptase (MMLV RT) will increase with increases in its ability to bind with a template-primer (T/P). To test this hypothesis, we introduced positive charges into MMLV RT by site-directed mutagenesis at position …

    Get Price
  • composite heat stabilizer nonionic polyacrylamide in ...

    2021-7-9 · The composite cross-linker can improve the thermal stability of polyacrylamide gel by improving the strength of the dendritic structure. Rheological testing showed that chromium acetate and phenolic resin can increase the storage modulus (strength) of polyacrylamide gel, with chromium acetate being more efficient than the phenolic resin.

    Get Price
  • Experimental study and application of gels formed by ...

    2015-11-1 · Thermal stability of bulk gel. A DSC 8500 differential scanning calorimeter (PerkinElmer, Inc. Shelton, USA) was used to study the thermal stability of the NPAM gel. When the NPAM gel was formed at 80 °C, a piece of gel was cut from the inside and kept in a hermetically sealed aluminum pan. During the preparation process, the gel sample was ...

    Get Price
  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and …

    Get Price
  • Mechanism of Polyacrylamide Hydrogel Instability on

    A gel system composed of acrylamide (AM), N,N'-methylenebisAM (BIS), and ammonium persulfate ((NH 4) 2 S 2 O 8) was developed and applied extensively in reservoirs to reduce water cut and increase oil production in mature fields.However, this gel system suffers from thermal stability loss and syneresis at high temperatures that reduces its ability to control water flow.

    Get Price
  • Thermal Stability of r-Amylase from Aspergillus oryzae ...

    2003-9-8 · the thermal stability (50-75 °C) of Aspergillus oryzaeR-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 stability of the immobilized R-amylase.

    Get Price
  • Simultaneous thermal analysis of cationic, nonionic

    2019-12-12 · Simultaneous thermal analysis of cationic, nonionic and anionic polyacrylamide. Annett Steudel. Annett Steudel. Affiliations. Ruhr Universität Bochum (RUB), Chair of Soil Mechanics, Foundation Engineering and Environmental Geotechnics, Universitätsstraße 150, 44780, Bochum, Germany. Search for articles by this author.

    Get Price
  • Study on rheology and microstructure of phenolic

    2018-10-1 · Nonionic polyacrylamide (NPAM) and phenolic resin cross-linker were used to prepare the phenolic resin gel. The hydrolysis degree and average molecular weight of NPAM were 3.31% and 9,650,000 g/mol, respectively. The cross-linker was prepared by using phenol, formaldehyde and urotropine, and it was purchased from Yuguang Co. Ltd., China.

    Get Price
  • Effect of temperature and low pH on structure and ...

    1986-1-30 · Effect of temperature and low pH on structure and stability of matrix porin in micellar detergent solutions. Markovic-Housley Z, Garavito RM. Thermal and low pH stabilities of matrix porin (Omp F) solubilized in the micellar solutions of ionic (SDS) and nonionic detergents were investigated by the methods of circular dichroism, intrinsic ...

    Get Price
  • Anionic Polymer Flocculant & Polyacrylamide Powder ...

    George Wypych, in Handbook of Material Weathering (Fifth Edition), 2013. 14.14 POLYACRYLAMIDE. Polyacrylamide can absorb many times its mass of water by incorporating it into its structure. 193 For this reason polyacrylamide is frequently used as flocculating agent in irrigation practices to minimize water losses through seepage in earthen canals. 193 There are a concerns that polyacrylamide ...

    Get Price
  • composite heat stabilizer nonionic polyacrylamide in ...

    2021-7-9 · The composite cross-linker can improve the thermal stability of polyacrylamide gel by improving the strength of the dendritic structure. Rheological testing showed that chromium acetate and phenolic resin can increase the storage modulus (strength) of polyacrylamide gel, with chromium acetate being more efficient than the phenolic resin.

    Get Price
  • Impact of anionic polyacrylamide on stability and

    2016-7-9 · 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 examined.

    Get Price
  • Excellent performance of non ionic polyacrylamide in ...

    Nonionic polyacrylamide for textile, slurry, the stability of the slurry performance, little mortar, fabric breakage rate is low, clean cloth. 2,U sed in the oil field Nonionic polyacrylamide is widely used in petroleum industry, such as oil drilling, drilling mud, waste mud treatment, prevent water channeling, reduce friction and improve the ...

    Get Price
  • Application of Polyacrylamide in agricultural

    2015-5-2 · Polyacrylamide as colorless granule solution for viscous liquid, nearly transparent, non-toxic, non corrosive, at 150 DEG C to thermal decomposition in the environment, good stability. A cationic, anionic, nonionic, zwitterionic and other types of ultra high molecular weight polyacrylamide, with different polymerization degree, with molecular ...

    Get Price
  • Effect of temperature and low pH on structure and ...

    1986-1-30 · Effect of temperature and low pH on structure and stability of matrix porin in micellar detergent solutions. Markovic-Housley Z, Garavito RM. Thermal and low pH stabilities of matrix porin (Omp F) solubilized in the micellar solutions of ionic (SDS) and nonionic detergents were investigated by the methods of circular dichroism, intrinsic ...

    Get Price
  • Assessment of Polyacrylamide Based Co-Polymers

    2017-10-12 · Assessment of Polyacrylamide Based Co-Polymers Enhanced by Functional Group Modifications with ... have an adequate thermal stability for the target oil reservoir, e.g., it should not contain –O– in the ... For example, polymers containing the nonionic hydrophilic group, such as amide groups (–CONH2), ...

    Get Price
  • Polyacrylamide-assisted synthesis of hierarchical

    2021-2-1 · A butterfly-shaped hierarchical porous SAPO-34 with a micro-meso-macroporous structure was directly synthesized in the presence of polyacrylamide hydrogel. The tri-level hierarchically structured SAPO-34 exhibits long catalytic lifetime and good thermal stability in the MTO reaction. Download : Download high-res image (256KB)

    Get Price
  • white floc anionic polyacrylamide chemical polymer

    Appearance:white powder or granule . Polyacrylamide is, simply called PAM, a water- soluble high polymer and widely used in petroleum, paper-making, metallurgical, textile, chemical and environment protection fields. There are three categories of . anionic, cationic and non-ionic type. Chemicals Nonionic Flocculant NPAM for Mineral Processing

    Get Price
  • Impact of anionic polyacrylamide on stability and

    2016-7-9 · 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 examined.

    Get Price
  • Excellent performance of non ionic polyacrylamide in ...

    Nonionic polyacrylamide for textile, slurry, the stability of the slurry performance, little mortar, fabric breakage rate is low, clean cloth. 2,U sed in the oil field Nonionic polyacrylamide is widely used in petroleum industry, such as oil drilling, drilling mud, waste mud treatment, prevent water channeling, reduce friction and improve the ...

    Get Price
  • Water treatment chemical polyacrylamide pam

    Jun 08, 2011· Water Treatment Chemicals Friday, June 17, 2011. polyacrylamide PAM is a linear polymer, it is soluble in water PAM good thermal stability PAM (PAM) abbreviation Polyacrylamide, is a linear polymers, the application of water-soluble polymer compound is one of the most extensive varieties, PAM and its derivatives can be used as ...

    Get Price
  • Polyacrylamide powder anionic nonionic and cationic ...

    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 ...

    Get Price
  • Research and application status and development

    Sewage plant polyacrylamide PAM has a high thermal stability, the C-62 strain produced by polyacrylamide PAM after boiling for 10 minutes and its activity is still 88%. The PAM of the wastewater treatment plant has a good coagulation ability for many kinds of flocculation particles as well as the synthesis of high molecular weight PAM.

    Get Price
  • Role of Ionic Headgroups on the Thermal, Rheological,

    2019-12-3 · environments. Thermal stability in reservoir conditions is a pre-requisite for surfactants’ application in EOR and other oilfield applications. Betaine-type surfactants have shown excellent thermal stability in high-salinity and high-temperature environments [27,28]. We were further interested in …

    Get Price
  • effects of plasticizers stabilizers on thermal | chemical ...

    processability and thermal stability to those of other commodity plastics, like polyethylene and polystyrene [5]. PVC is thermoplastic and due to its low thermal stability the use of PVC polymer is limited in industry. Several attempts have been made to enhance the thermal stability and mechanical properties of PVC in recent years [6-8].

    Get Price
  • Simultaneous thermal analysis of cationic, nonionic

    2019-12-1 · In contrast simultaneous thermal analysis can be applied to determine the effective PAM content in smectite-PAM composites. At the same time, information on the thermal stability of PAM and of smectite-PAM composites are available. Tutas et al. (1987) studied the decomposition of polyacrylamide (PAM) up to 600 °C under N 2 using simultaneous ...

    Get Price
  • Evaluation of High Molecular Weight Nonionic ...

    2020-9-17 · model of gelation time, and the compatibility, microstructure, thermal stability, and plugging capacity of this gel system were evaluated for water control treatment. 2. Materials and Methods 2.1. Materials The nonionic polyacrylamide (NPAM) was purchased from Guangzhou Shuirun Chemical

    Get Price
  • Investigation of the degradation and stability of ...

    2016-12-1 · In order to observe the stability of acrylamide-based polymers in acid, the above four types of prepared polymers were assembled into eight polymer solutions (two replications of each polymer type), with viscosity ranging from 10 to 30 cp. Hydrochloric acid was then added to the eight polymer solutions to comprise 1 wt% HCl and 10 wt% HCl solutions for each polymer solution.

    Get Price
  • Nonionic Polyacrylamide Available Top Quality at Best

    Nonionic Polyacrylamide. From us, you can easily purchase Nonionic Polyacrylamide at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at [email protected] We invite you to contact us for further information about our company and our capabilities.

    Get Price
  • Experimental study and application of gels formed by ...

    2015-11-1 · The NPAM gel has good shearing stability and thermal stability which can be cross-linked in high salinity and temperature reservoirs. The “–COO − ” group in the NPAM polymer reacts with multiple alkylations (–CH 2 OH) of the phenolic ring to form a dense three-dimensional gel network structure in the gelation process and porous media.

    Get Price
  • Thermal stability of high-molecular-weight

    The above reported data show that temperature affects the stability of commercial polyacrylamide solutions in two different ways: The first process that increases the anionic character of polymers is responsible for the viscosity loss in the presence of monovalent salts and for eventual precipitation in the presence of divalent salts even if the molecular weight is not changed.Such a process ...

    Get Price
  • Thermal stability of polyacrylamide solutions: effect of ...

    We have investigated the effect of temperature on the chemical (hydrolysis) and thermal (molecular weight) stability of purified polyacrylamide solution.From viscosity and light scattering data we show that no polymer degradation due to oxygen contamination results from heating polymer solutions although higher temperature is responsible for hydrolysis of amide groups.

    Get Price
  • Simultaneous thermal analysis of cationic, nonionic

    2019-12-12 · The object of this study was to investigate the thermal decomposition of cationic (PAM S,τ40 Cl), nonionic (PAM° S), and anionic (NaPAM S,τ40) polyacrylamide under synthetic air (SynA) in detail using a thermogravimetry/differential scanning calorimetry (TG/DSC) system connected to a quadrupole mass spectrometer (MS).

    Get Price
  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and …

    Get Price
  • Increase in thermal stability of Moloney murine

    We hypothesized that the thermal stability of Moloney murine leukaemia virus reverse transcriptase (MMLV RT) will increase with increases in its ability to bind with a template-primer (T/P). To test this hypothesis, we introduced positive charges into MMLV RT by site-directed mutagenesis at position …

    Get Price
  • Polyacrylamide powder anionic nonionic and cationic ...

    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 ...

    Get Price
  • Polyacrylamide | PAM - Shanghai Chemex

    2021-2-23 · The product is a crystallized, water soluble, nonionic detergent similar to n-octyl-β-D-glucoside. In studies on rhodopsin and opsin in different nonionic and zwitterionic detergents, this detergent was superior in solubility and maintaining thermal stability of rhodopsin and opsin.3 The product has found application in membrane-

    Get Price
  • n-Dodecyl b-D -maltoside (D4641) - Product Information

    2014-6-8 · Thermal stability and rheological properties of a novel surfactant–polymer system containing non-ionic ethoxylated fluorocarbon surfactant was evaluated. A copolymer of acrylamide (AM) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) was used. Thermal stability and surfactant structural changes after aging at 100 °C were evaluated using TGA, 1H NMR, 13C NMR, 19F NMR and FTIR.

    Get Price
  • Evaluation of Rheological and Thermal Properties of a

    2005-7-2 · Nonionic surfactant and temperature effects on the viscosity of hydrophobically modified hydroxyethyl cellulose (HMHEC) solutions are investigated experimentally. Weak shear thickening at intermediate shear rates takes place for HMHEC at moderate concentrations and becomes more significant at lower temperatures. While this amphiphilic polymer in surfactant-free solution does not …

    Get Price
  • Nonionic Surfactant and Temperature Effects on the ...

    The metalloprotease exhibited significant stability in the presence of organic solvents with log P values more than 2.5, nonionic detergents and oxidising agent. An attempt was made to test the synthesis of aspartame precursor (Cbz-Asp-Phe-NH2) which was catalysed by …

    Get Price
  • Isolation, purification and characterisation of an

    2015-1-17 · In the present study, particular emphasis was put on the effects of the type of functional groups of anionic and cationic polyacrylamide (PAM) and solution pH on the mechanism of polymer adsorption on the surface of dispersed alumina. The polymer-adsorbed amount, surface charge density and zeta potential of solid particles without and with PAM, as well as the stability of Al2O3 suspension ...

    Get Price
  • Impact of anionic and cationic polyacrylamide on the ...

    processability and thermal stability to those of other commodity plastics, like polyethylene and polystyrene [5]. PVC is thermoplastic and due to its low thermal stability the use of PVC polymer is limited in industry. Several attempts have been made to enhance the thermal stability and mechanical properties of PVC in recent years [6-8].

    Get Price
  • effects of plasticizers stabilizers on thermal | chemical ...

    D.K. Ramsden and K. McKay, Degradation of polyacrylamide in aqueous solution induced by chemically generated hydroxyl radicals: Part I—Fenton's reagent, Polymer Degradation and Stability, 10.1016/0141-3910(86)90045-5, 14, 3, (217-229), (1986).

    Get Price
  • Aging and loss of flocculation activity of aqueous ...

    2021-3-12 · The study deals with the synthesis and characterization of the hydrophobically modified polyacrylamide (HMPA) copolymer and its functional property evaluation in mixed polymer-gemini surfactant systems for application in enhanced oil recovery (EOR). The copolymer was initially prepared in the laboratory using acrylamide and N-phenylacrylamide monomer units via an addition …

    Get Price
  • polymers polyacrylamide pam for oil field in uganda ...

    2021-7-11 · Waste Water Treatment Anionic Polyacrylamide Pam PAM has three types: Anionic PAM, Cationic PAM and Nonionic PAM. Polyacrylamide (PAM) is a kind of water soluble polymer, has unique effect to increase the viscosity of water or to promote the ... (PAM) used in oil field Polyacrylamide has good thermal stability; it is easily soluble in cold ...

    Get Price
  • Polyacrylamide powder anionic nonionic and

    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 ...

    Get Price
  • Oilfield Chemicals - Blue Ocean Oil

    2015-12-2 · Anionic polyacrylamide copolymer supplied in a mineral oil. It mixes readily and dissolves quickly into water ... Basodrill® 2200 Liquid Low Nonionic ... Thermal stability to 250°C (500°F). Optimng thinning at pH 7-8 and are accepted as the cleanest and most effectve route to mud viscosity control. EMEA APAC NAFTA LATAM

    Get Price
  • A KINETIC ANAYSIS OF THE DEGRADATION OF GRAFTED

    2010-3-26 · Grafted anionic polyacrylamide gel has been synthesised in the laboratory following radical polymerisation process. Kinetics of thermal degradation of synthesised gel was evaluated under nonisthothermal condition by integral approximation method to determine the thermal stability of the material from thermogavometric study.

    Get Price
  • Polyacrylamide crosslinked by bis-vinylimidazolium

    2019-9-3 · A series of ionic compounds 1,n-dialkyl-3,3′-bis-l-vinylimidazolium bromide (C n VIM) are prepared and employed to crosslink acrylamide for polyacrylamide (PAAM) hydrogel preparation via in situ solution polymerization. The swelling behavior, mechanical properties and thermal stability of the prepared C n VIM crosslinked PAAM hydrogels are investigated.

    Get Price
  • Impact of anionic and cationic polyacrylamide on

    2015-1-17 · In the present study, particular emphasis was put on the effects of the type of functional groups of anionic and cationic polyacrylamide (PAM) and solution pH on the mechanism of polymer adsorption on the surface of dispersed alumina. The polymer-adsorbed amount, surface charge density and zeta potential of solid particles without and with PAM, as well as the stability of Al2O3 suspension ...

    Get Price
  • Isolation and Thermal Stabilization of Bacteriocin

    Testing of Thermal Long-Term Stability It is known that proteins are sensitive to heat treatment, especially in relation to long-term stability and activity [ 29 ]. In this study, thermal stability of nisin products was observed during storage (up to 165 days) at four different temperatures representing conditions of production (−18°C ...

    Get Price