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cationic polyacrylamide polymerization function

  • UV-Initiated Polymerization of Cationic

    2013-12-24 · P(AM-DAC-BA) was synthesized through copolymerization of acrylamide (AM), acryloyloxyethyl trimethyl ammonium chloride (DAC), and butylacrylate (BA) under ultraviolet (UV) initiation using response surface methodology (RSM). The influences of light intensity, illumination time, and photoinitiator concentration on the intrinsic viscosity [η] of ...

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  • Synthesis of block cationic polyacrylamide precursors ...

    2019-4-23 · Synthesis of cationic polyacrylamides (CPAMs) by introducing cationic polymer precursors followed by chain extension of acrylamide (AM) homopolymer blocks via RAFT polymerization is a promising approach for engineering high-performance CPAMs. However, the aqueous solution polymerization of AM usually leads to high viscosity, thus limiting the solid content in the polymerization …

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  • A cationic polyacrylamide dispersion synthesis by ...

    2021-7-13 · Abstract. A cationic polyacrylamide (CPAM) dispersion, the copolymer of acrylamide (AM) and acryloyloxyethyltrimethyl ammonium chloride (DAC), has been synthesized through dispersion polymerization in aqueous ammonium sulfate ( (NH4)2SO4) solution. The polymerization was initiated by tert-butyl hydroperoxide (TBHP) and ferrisulfas (FeSO4) using ...

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  • UV-Initiated Polymerization of Cationic

    UV-Initiated Polymerization of Cationic Polyacrylamide: Synthesis, Characterization, and Sludge Dewatering Performance Huaili Zheng , 1 Yongjun Sun , 1 , * Xiaomin Tang , 1 Mingzhuo Tan , 2 Jiangya Ma , 1 Wei Chen , 1 and Yong Liao 1

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  • Effect of Cationic Polyacrylamides on the Interactions ...

    2019-12-12 · The interaction between cellulose fibers in the presence of cationic polyacrylamide (CPAM) was analyzed by rheology as a function of polyelectrolyte concentration, charge density, and …

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  • Synthesis of a cationic polyacrylamide by a

    P (AM-DAC-BA) was synthesized through copolymerization of acrylamide (AM), acryloyloxyethyl trimethyl ammonium chloride (DAC), and butylacrylate (BA) under ultraviolet (UV) initiation using response surface methodology (RSM). The influences of light intensity, illumination time, and photoinitiator concentration on the intrinsic viscosity of P ...

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  • UV-Initiated Polymerization of Cationic

    2009-1-30 · Polymerization conditions: terpolymer concentration 0.05 wt.%, pH = 3.0, monomers concentration 36 wt.%, cationic degree 12%, photo-initiators …

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  • Aqueous photo-polymerization of cationic

    2021-5-15 · CPAM is mainly prepared by polymerization of AM and cationic monomer. Acryloxy trimethylammonium chloride (DAC) is one of the more commonly used cationic monomers. The flocculant copolymerized of AM and DAC has been widely synthesized …

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  • A cationic polyacrylamide dispersion synthesis by ...

    2021-7-13 · Full Article. A CATIONIC POLYACRYLAMIDE DISPERSION SYNTHESIS BY DISPERSION POLYMERIZATION IN AQUEOUS SOLUTION. Yufeng Wang, a,b, * Kefu Chen, a Lihuan Mo, a,* and Huiren Hu c A cationic polyacrylamide (CPAM) dispersion, the copolymer of acrylamide (AM) and acryloyloxyethyltrimethyl ammonium chloride (DAC), has been synthesized through dispersion polymerization …

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  • UV-Initiated Polymerization of Cationic

    UV-Initiated Polymerization of Cationic Polyacrylamide: Synthesis, Characterization, and Sludge Dewatering Performance Huaili Zheng , 1 Yongjun Sun , 1 , * Xiaomin Tang , 1 Mingzhuo Tan , 2 Jiangya Ma , 1 Wei Chen , 1 and Yong Liao 1

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  • Effect of Cationic Polyacrylamides on the

    2019-12-12 · The interaction between cellulose fibers in the presence of cationic polyacrylamide (CPAM) was analyzed by rheology as a function of polyelectrolyte concentration, charge density, and molecular weight. CPAM was found to strongly influence the yield stress of cellulose suspensions; low doses of CPAM increased the yield stress, but at higher concentrations the yield stress declined. The charge ...

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  • Aqueous photo-polymerization of cationic

    2009-1-30 · UV-initiated photo-polymerizations had been developed over the last 30 years, owing to their advantages in industrial applications, including adhesives, coatings, inks, varnishes and electronics [1–4].UV curable systems were classified based on the polymerization being either radical or ionic [].Photo-initiated radical polymerizations were well understood and had been investigated for a ...

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  • Preparation of cationic polyacrylamide microsphere ...

    2020-1-14 · Key words: Dispersion polymerization, cationic polyacrylamide microspheres, profile modification, permeability reduction Preparation of cationic polyacrylamide microsphere emulsion and its performance for permeability reduction *Corresponding author. email: [email protected] Received February 13, 2014

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  • Synthesis of block cationic polyacrylamide

    Synthesis of block cationic polyacrylamide precursors using an aqueous RAFT dispersion polymerization†. Bo Huang a, Jie Jiang a, Mutian Kang a, Pingwei Liu * ab, Hailong Sun * c, Bo-Geng Li a and Wen-Jun Wang * ab a State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China.

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  • Experiment 1: Polymerization of acrylamide in water

    2020-12-30 · Experiment 1: Polymerization of acrylamide in water Aim: (a) To polymerize acrylamide (monomer) in water to polyacrylamide (polymer) by free radical polymerization using a 'redox' pair of initiators. (b) To follow the kinetics of polymerization by monitoring the variation of

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  • Research on a new cationic polyacrylamide (CPAM)

    2021-5-15 · The cationic monomers on these microblock segments can be polymerized to form a CPAMD with a new cationic microblock structure. In addition, microwave has mechanical effects such as oscillation, emulsification, and diffusion, which can accelerate the heat and mass transfer process of the reaction system, thus accelerating the reaction rate (Wiesbrock et al. 2004; Hoogenboom and …

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  • Polyacrylamide, a widely used flocculant in water ...

    2021-2-26 · Polyacrylamide is a high molecular polymer. Specializing in the treatment of various difficult-to-treat wastewater and the treatment of sludge dewatering. (Sludge dewatering generally uses cationic polyacrylamide) It is widely used in municipal sewage and sludge treatment in the paper-making printing and dyeing industry.

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  • Dispersion polymerization of anionic polyacrylamide in

    2017-8-27 · polyacrylamide dispersions contained smooth spherical particles. The dispersions behaved as a Newton fluid and were stable . Dispersion polymerization systems consists of monomer, dispersion medium, stabilizer, and initiator. During dispersion polymerization, the stabilizer combines with the salted-out polymer particles, and then the dispersion is

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  • UV-Initiated Polymerization of Cationic

    UV-Initiated Polymerization of Cationic Polyacrylamide: Synthesis, Characterization, and Sludge Dewatering Performance Huaili Zheng , 1 Yongjun Sun , 1 , * Xiaomin Tang , 1 Mingzhuo Tan , 2 Jiangya Ma , 1 Wei Chen , 1 and Yong Liao 1

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  • The Characteristic of Cationic Polyacrylamide Emulsion ...

    2019-4-23 · Synthesis of cationic polyacrylamides (CPAMs) by introducing cationic polymer precursors followed by chain extension of acrylamide (AM) homopolymer blocks via RAFT polymerization is a promising approach for engineering high-performance CPAMs. However, the aqueous solution polymerization of AM usually leads to high viscosity, thus limiting the solid content in the polymerization …

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  • Synthesis of block cationic polyacrylamide precursors ...

    Corpus ID: 43686507. A CATIONIC POLYACRYLAMIDE DISPERSION SYNTHESIS BY DISPERSION POLYMERIZATION IN AQUEOUS SOLUTION @article{Wang2011ACP, title={A CATIONIC POLYACRYLAMIDE DISPERSION SYNTHESIS BY DISPERSION POLYMERIZATION IN AQUEOUS SOLUTION}, author={Y. Wang and Kefu Chen and L. Mo and Huiren Hu}, journal={Bioresources}, …

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  • [PDF] A CATIONIC POLYACRYLAMIDE DISPERSION

    2019-7-31 · UV-Initiated Polymerization of Cationic Polyacrylamide: Synthesis, Characterization, and Sludge Dewatering Performance HuailiZheng, 1 YongjunSun, 1 XiaominTang, 1 MingzhuoTan, 2 JiangyaMa, 1 WeiChen, 1 andYongLiao 1 Key laboratory of ther ee Gorges Reservoir Region s Eco-Environment, State Ministry of Education, Chongqing University, Chongqing ...

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  • Research Article UV-Initiated Polymerization of Cationic ...

    Keywords: polymer synthesis, aqueous two-phase polymerization, cationic polyacrylamide, dimethylaminoethyl methacry-late methyl chloride, polyethylene glycol 20000 eXPRESS Polymer Letters Vol.4, No.5 (2010) 275–283 Available online at www.expresspolymlett.com

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  • Preparation of cationic polyacrylamide by aqueous two ...

    2017-10-31 · Cationic polyacrylamide (CPAM) has been the focus of research in environmental engineering field, particularly in sludge dewatering. ... TG/DSC analysis of PAMA-25-15.1 as a function of temperature. 3.2. ... Based on the mechanism of free radical polymerization, the polymerization reaction is partly dependent on collision between the monomer ...

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  • UV-initiated polymerization of acid- and alkali

    2019-11-15 · In this study, a novel, highly efficient and environmentally friendly ternary composites flocculant, namely, cationic starch-grafted-cationic polyacrylamide/graphene oxide (CS-g-CPAM/GO), was synthesized by ammonium persulfate initiation polymerization and condensation reaction.

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  • Cationic starch-grafted-cationic polyacrylamide based ...

    2020-12-30 · Experiment 1: Polymerization of acrylamide in water Aim: (a) To polymerize acrylamide (monomer) in water to polyacrylamide (polymer) by free radical polymerization using a 'redox' pair of initiators. (b) To follow the kinetics of polymerization by monitoring the variation of

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  • Experiment 1: Polymerization of acrylamide in water

    2014-6-26 · Template Polymerization of a Novel Cationic Polyacrylamide: Sequence Distribution, Characterization, and Flocculation Performance. Industrial & Engineering Chemistry Research 2016 , 55 (37) , 9819-9828.

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  • A CATIONIC POLYACRYLAMIDE DISPERSION SYNTHESIS

    A CATIONIC POLYACRYLAMIDE DISPERSION SYNTHESIS BY DISPERSION POLYMERIZATION IN AQUEOUS SOLUTION Yufeng Wang,a,b,* Kefu Chen,a Lihuan Mo,a,* and Huiren Hu c A cationic polyacrylamide (CPAM) dispersion, the copolymer of acrylamide (AM) and acryloyloxyethyltrimethyl ammonium chloride (DAC), has been synthesized through dispersion polymerization in

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  • Aqueous photo-polymerization of cationic

    2009-1-30 · Aqueous photo-polymerization of cationic polyacrylamide with hybrid photo-initiators Aqueous photo-polymerization of cationic polyacrylamide with hybrid photo-initiators Wu, Yumin; Zhang, Nana 2009-01-30 00:00:00 In this study, a terpolymer of acrylamide with (2-methacryloyloxyethyl) trimethyl ammonium chloride (DMC) and dimethyldiallylammonium chloride (DMDAAC) as cationic …

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  • Photoinitiated Polymerization of Cationic Acrylamide

    In this paper, synthesis of the cationic polyacrylamide P(AM-DAC) was investigated using a novel initiation system, photoirradiation. 2,2′-Azobis(2-amidinopropane) dihydrochloride (V-50) was introduced into the system as the photoinitiator for the polymerization of acrylamide with DAC as the cationic monomer in aqueous solutions.

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  • UV-Initiated polymerization of cationic polyacrylamide ...

    UV-Initiated polymerization of cationic polyacrylamide: synthesis, characterization, and sludge dewatering performance ScientificWorldJournal. 2013 Dec 24;2013:937937. doi: 10.1155/2013/937937. eCollection 2013. Authors Huaili Zheng 1 ...

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  • UV-initiated polymerization of acid- and alkali

    2017-10-31 · Cationic polyacrylamide (CPAM) has been the focus of research in environmental engineering field, particularly in sludge dewatering. ... TG/DSC analysis of PAMA-25-15.1 as a function of temperature. 3.2. ... Based on the mechanism of free radical polymerization, the polymerization reaction is partly dependent on collision between the monomer ...

    Get Price
  • Preparation of cationic polyacrylamide by aqueous two ...

    Keywords: polymer synthesis, aqueous two-phase polymerization, cationic polyacrylamide, dimethylaminoethyl methacry-late methyl chloride, polyethylene glycol 20000 eXPRESS Polymer Letters Vol.4, No.5 (2010) 275–283 Available online at www.expresspolymlett.com

    Get Price
  • Experiment 1: Polymerization of acrylamide in water

    2020-12-30 · Experiment 1: Polymerization of acrylamide in water Aim: (a) To polymerize acrylamide (monomer) in water to polyacrylamide (polymer) by free radical polymerization using a 'redox' pair of initiators. (b) To follow the kinetics of polymerization by monitoring the variation of

    Get Price
  • Preparation of Cationic Polyacrylamide

    In order to improve the aqueous solutions viscosity and flocculation performance of cationic polyacrylamide, organic montmorillonite was added into polymerization system of polyacrylamide, the cationic polyacrylamide/dimethyl diallyl ammonium chloride/organic montmorillonite (CPAM/DMDAAC/MMT) nanocomposite was prepared by aqueous two-phase polymerization method.

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  • The method of Polyacrylamide production technology

    Emulsion polymerization is another important synthesis method polyacrylamide, which is a conventional operation in the dispersed aqueous acrylamide solution in an organic solvent such as gasoline, with vigorous stirring, the solution was uniformly dispersed emulsion system is formed, followed by the addition of acrylamide initiator reaction of polyacrylamide.

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  • 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 …

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  • UV-Initiated polymerization of cationic polyacrylamide ...

    UV-Initiated polymerization of cationic polyacrylamide: synthesis, characterization, and sludge dewatering performance ScientificWorldJournal. 2013 Dec 24;2013:937937. doi: 10.1155/2013/937937. eCollection 2013. Authors Huaili Zheng 1 ...

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  • A CATIONIC POLYACRYLAMIDE DISPERSION

    A cationic polyacrylamide (CPAM) dispersion, the copolymer of acrylamide (AM) and acryloyloxyethyltrimethyl ammonium chloride (DAC), has been synthesized through dispersion polymerization in aqueous ammonium sulfate ((NH4)2SO4) solution.

    Get Price
  • Cationic CPAM polyacrylamide in water treatment

    2015-9-7 · Cationic polyacrylamide CPAM [ CPAM Properties ] Cationic polyacrylamide CPAM is the water-soluble high polymer or gathers the electrolyte.Because in its molecular chain includes the certain amount polar group,cationic PAM can through the absorbed water in the aerosol solids, causes between the granule the bridging or neutral causes the granule condensation through the electric charge to …

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  • Properties of Polyacrylamides

    2020-7-11 · The polymerization reaction creates a high molecular weight polymer or gel. Polyacrylamide: Structure of Repeat Unit: Anionic Polyacrylicamide (APAM) Neutral Polyacrylamide (PAM) Cationic Polyacrylamide (CPAM) COMMERCIAL Polyacrylamides Major manufacturers of acrylamide polymers are BASF, SNF Floerger, Shangdong Tongli , and ...

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  • Cationic polyacrylamide copolymers (PAMs):

    2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …

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  • Template Polymerization of a Novel Cationic

    Template Polymerization of a Novel Cationic Polyacrylamide: Sequence Distribution, Characterization, and Flocculation Performance By Zhengan Zhang (526383), Huaili Zheng (649718), Fei Huang (9205), Xiang Li (114679), Shengying He (3106239) and Chun Zhao (208554)

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  • cationic polyacrylamide polymer for solution thickening

    There are 3,991 cationic emulsion polyacrylamide suppliers, mainly located in Asia. The top supplying countries or regions are China, Thailand, and South Africa, which supply 99%, 1%, and 1% of cationic emulsion polyacrylamide respectively. Cationic emulsion polyacrylamide products are most popular in South America, North America, and Africa.

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  • cationic emulsion polyacrylamide | Industrial water ...

    2003-2-20 · Polyacrylamide and its copolymer containing 6.8 mole % 2-acrylamido-2-methylpropane sulfonic acid were prepared by an irradiation-initiated precipitation polymerization technique. The pol~'Iner was characterized by intrinsic viscosity under conditions similar to …

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  • Adsorption Characteristics of Polyacrylamide and

    2018-4-4 · Polyacrylamide (PAM) Chitosan What is Anionic Polyacrylamide? • High molecular weight, water soluble molecule formed by polymerization of negatively charged acrylamide co-monomer. • PAM aids solid-liquid separation by causing suspended particles to bind and form larger aggregates. • The process is known as polymer bridging.

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  • A CATIONIC POLYACRYLAMIDE DISPERSION

    A cationic polyacrylamide (CPAM) dispersion, the copolymer of acrylamide (AM) and acryloyloxyethyltrimethyl ammonium chloride (DAC), has been synthesized through dispersion polymerization in aqueous ammonium sulfate ((NH4)2SO4) solution.

    Get Price
  • Asian Journal of Chemistry; Vol. 26, No. 3 (2014), 629-633 ...

    tion of PAM methods and cationic grafting polymerization methods11,12. The modif ica tion methods could obtain r ela tively high molecular weight of cationic polyacrylamide polymer, but which had poor stability, short duration and high price13. Graft polymerization methods could obtain na tural biodegra-

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  • Adsorption Characteristics of Polyacrylamide and

    2003-2-20 · Polyacrylamide and its copolymer containing 6.8 mole % 2-acrylamido-2-methylpropane sulfonic acid were prepared by an irradiation-initiated precipitation polymerization technique. The pol~'Iner was characterized by intrinsic viscosity under conditions similar to …

    Get Price
  • Cationic polyacrylamide copolymers (PAMs):

    2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …

    Get Price
  • SYNTHESIS OF CATIONIC POLYACRYLAMIDE BY

    synthesis of cationic polyacrylamide by aqueous two-phase polymerization PAN Min1,2,CHEN Da-jun2(1.Sichuan Petroleum Administration Safety and Environment Proctection & Quality Surveillance and Inspection Research Institute,Cuanghau 618300,China;2.College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

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  • cationic polyacrylamide polymer for solution thickening

    1994-5-23 · Pore-size distributions of cationic polyacrylamide hydrogels varying in initial monomer concentration and cross-linker/monomer ratio

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  • Pore-size distributions of cationic polyacrylamide ...

    There are 3,991 cationic emulsion polyacrylamide suppliers, mainly located in Asia. The top supplying countries or regions are China, Thailand, and South Africa, which supply 99%, 1%, and 1% of cationic emulsion polyacrylamide respectively. Cationic emulsion polyacrylamide products are most popular in South America, North America, and Africa.

    Get Price
  • cationic emulsion polyacrylamide | Industrial water ...

    2019-9-4 · 1 Article 2 Preparation, characterization, and sludge 3 conditioning of cationic polyacrylamide synthesized 4 by a novel UV-initiated system 5 6 Qingqing Guan1,*, Guocheng Zhu 2, Yi Liao c, Jin Xu 1, Xiaoxu Sun 1, Fang Tian 1, Jiaxing Xu 1 7 and Minghan Luo 1 8 1 Department of the Environmental Engineering, Nanjing Institute of Technology, 1 Hongjing Avenue,

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  • Preparation, characterization, and sludge conditioning of ...

    2018-4-4 · Polyacrylamide (PAM) Chitosan What is Anionic Polyacrylamide? • High molecular weight, water soluble molecule formed by polymerization of negatively charged acrylamide co-monomer. • PAM aids solid-liquid separation by causing suspended particles to bind and form larger aggregates. • The process is known as polymer bridging.

    Get Price
  • Книги: 'Cationic polyacrylamide' – Grafiati

    Cationic polyacrylamide is a derivative of polyacrylamide, a cationic polymer flocculant which has an excellent effect on sewage treatment. Our existing cationic polyacrylamide are mostly prepared by the Mannich reaction ,which has the shortcomings of more unreacted material, low cationic degree, poor stability, short validity, etc.

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