dispersion polymerization of anionic polyacrylamide

dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an

Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer. Effects of salt concentration, and molecular weight and concentration of stabilizers on the stability of the dispersions were investigated using a HAAKE rheometer and optical microscopy.

Get Price
dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium 1 Introduction Polyacrylamide (PAM) is an important water-soluble polymer. It can be used as a flocculant for water disposal, strength additives for paper manufacture, oil displacement agents for enhanced oil recovery, and so on (Yan, 1998). At present, anionic ...

Get Price
dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an

Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer. Effects of salt concentration, and molecular weight and ...

Get Price
dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium 收藏本文 分享 Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer.

Get Price
dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an

Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as ...

Get Price
dispersion polymerization of acrylamide | langmuir

Dispersion Polymerization of Acrylamide | Langmuir

Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium. Petroleum Science 2010, 7 (3) , 410-415. DOI: 10.1007/s12182-010-0086-9. Jianbo Tan, Bo Wu, Jianwen Yang, Yedan Zhu, Zhaohua Zeng.

Get Price
the micromorphology of anionic polyacrylamide dispersions

The Micromorphology of Anionic Polyacrylamide Dispersions

Anionic polyacrylamide dispersions were prepared by dispersion polymerization in aqueous salt solutions. The effects of reaction conditions, such as salt concentration, molecular weight of stabilizers, on the micromorphology of the dispersions were investigated systematically by using biological photomicroscope. The results showed that the particle shape in stable dispersions were more regular ...

Get Price
preparation and characterization of anionic polyacrylamide

Preparation and Characterization of Anionic Polyacrylamide

Dispersion copolymerization of acrylamide(AM)and acrylic acid (AA) was carried out in aqueous solution of ammonium sulfate(AS),using polyvinyl pyrrolidone(PVP) as ...

Get Price
anionic dispersion polymerization. i. control of particle

Anionic dispersion polymerization. I. control of particle

Studies on the mechanism for the formation of the stable dispersion polystyrene prepared by anionic dispersion polymerization of styrene in n‐hexane using poly(t‐butylstyrene) as the stabilizing moiety in steric stabilizer have been performed by a combination of size exclusion chromatographic (SEC) and transmission electron microscopic (TEM) analyses.

Get Price
anionic dispersion polymerization of 1,4-divinylbenzene

Anionic dispersion polymerization of 1,4-divinylbenzene

Synthesis of branched polymers by means of living anionic polymerization. 10. Synthesis of well-defined heteroarm star-branched polymers by coupling reaction of chain-functionalized polystyrenes with benzyl halide moieties with living anionic polymers of tert-butyl methacrylate. Polymer 2002, 43 (25) , 7125-7131.

Get Price
dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an

Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium 收藏本文 分享 Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer.

Get Price
anionic polyacrylamide “water-in-water” emulsion prepared

Anionic polyacrylamide “water-in-water” emulsion prepared

Anionic polyacrylamide “water-in-water” emulsion prepared by dispersion polymerization in mixed salt aqueous media Yongli Lü Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, No. 9, Section 4, Renmin South Avenue, Chengdu 610041, P. R. China; fax: +86-(0)28-8523 6874

Get Price
preparation and characterization of anionic polyacrylamide

Preparation and Characterization of Anionic Polyacrylamide

Dispersion copolymerization of acrylamide(AM)and acrylic acid (AA) was carried out in aqueous solution of ammonium sulfate(AS),using polyvinyl pyrrolidone(PVP) as ...

Get Price
aqueous dispersion polymerization of acrylamide in

AQUEOUS DISPERSION POLYMERIZATION OF ACRYLAMIDE IN

dispersion polymerization can be easily dissolved in aqueous medium, making the polymer to be easily used in the industry. In the dispersion polymerization process, stabilizer plays a crucial role. In the absence of a colloidal stabilizer flocculation occurs, making it difficult to polymerize to high conversion [7]. There

Get Price
dispersion polymerization of acrylamide with quaternary

Dispersion polymerization of acrylamide with quaternary

Dispersion polymerization of acrylamide with quaternary ammonium cationic comonomer in aqueous solution B. K. Song Pulp and Paper Research Center, Korea Research Institute of Chemical Technology, Daejon 305‐600, Korea

Get Price
polyacrylamide emulsion

Polyacrylamide Emulsion

Polyacrylamide emulsion is prepared by dispersion or inverse emulsion polymerization, which is a form of polyacrylamide liquid present. Besides the characteristics of solid polyacrylamide flocculants, through the molecular chain of polar groups to adsorb suspended solids in the water particles, the emulsion could formats the large flocs through bridge between the particles or electricity.

Get Price
dispersion polymerization in environmentally benign

Dispersion polymerization in environmentally benign

1. Introduction. Dispersion polymerization has been the technique of choice for the preparation of microspheres (200 nm to several μm) that find widespread applications in coating, bioassay, print ink, separation, and catalyst support [].Key to the formation of stable and uniform microspheres is effective stabilization of the nascent particle seeds during the highly sensitive nucleation stage ...

Get Price
difference between anionic and cationic polymerization

Difference Between Anionic and Cationic Polymerization

Key Difference – Anionic vs Cationic Polymerization Anionic polymerization and cationic polymerization are two types of chain growth polymerization reactions which are used to synthesize various types of polymers.Both these reactions have the same reaction mechanism, but the reaction initiator is different.

Get Price
cn103059216a - dispersant and preparation method thereof

CN103059216A - Dispersant and preparation method thereof

The invention provides a comb-type graft copolymer dispersant and a preparation method thereof, and an application method of the dispersant in anionic polyacrylamide emulsion polymerization. Three monomers are subjected to free radical addition copolymerization reaction to obtain the comb-type graft copolymer. The dispersant provided by the invention has the advantages of low molecular weight ...

Get Price
阳离子聚丙烯酰胺水包水乳液分散聚合条件的研究

阳离子聚丙烯酰胺水包水乳液分散聚合条件的研究

Preparation Conditions for Cationic Polyacrylamide Water-in-Water Emulsion by Dispersion Polymerization[J]. Petrochemical Technology, 2010, 39(10): 1140-1145. 使用本文

Get Price
aqueous dispersion polymerization of acrylamide in

AQUEOUS DISPERSION POLYMERIZATION OF ACRYLAMIDE IN

dispersion polymerization can be easily dissolved in aqueous medium, making the polymer to be easily used in the industry. In the dispersion polymerization process, stabilizer plays a crucial role. In the absence of a colloidal stabilizer flocculation occurs, making it difficult to polymerize to high conversion [7]. There

Get Price
dispersion polymerization of acrylamide with quaternary

Dispersion polymerization of acrylamide with quaternary

Dispersion polymerization of acrylamide with quaternary ammonium cationic comonomer in aqueous solution B. K. Song Pulp and Paper Research Center, Korea Research Institute of Chemical Technology, Daejon 305‐600, Korea

Get Price
stability and synthesis of dispersion polymerization

Stability and Synthesis of Dispersion Polymerization

Abstract. Abstract. Dispersion polymerization of acrylamide (AM) has been carried out in ethanol/water (90 v % ethanol) media with Polyvinylpyrrolidone(PVP) as a stabilizer, several surfactants as co-stabilizers, Sodium hydrogen sulfite (NaHSO3) and ammonium persulfate ((NH4)2S2O8) as a redox initiator(I).

Get Price
anionic polyacrylamide chemicals flocculant water

Anionic Polyacrylamide Chemicals Flocculant Water

Anionic Polyacrylamide Chemicals Flocculant Water Treatment Polymer. 1. Product characteristics. Anionic polyacrylamide (APAM) series products are water-soluble linear polymers synthesized under high degree polymerization, easily soluble in water, almost insoluble in the benzene, the ether, the aliphatics, the acetone and other common organic solvents. . At the meantime, APAM series products ...

Get Price
光引发分散聚合制备聚乙烯亚胺为核的聚丙烯酰胺

光引发分散聚合制备聚乙烯亚胺为核的聚丙烯酰胺

光引发分散聚合制备聚乙烯亚胺为核的聚丙烯酰胺 方申文,段明,张烈辉,王虎,阳勇,张健 1.西南石油大学化学化工学院,四川成都610500; 2.中海油北京研究中心,北京100027 Preparation of Star Polyacrylamide with Polyethyleneimine Core by Photo-Induced

Get Price
preparation of monodisperse polyacrylamide microspheres

Preparation of Monodisperse Polyacrylamide Microspheres

Preparation of Monodisperse Polyacrylamide Microspheres with Submicrometer Size in Ethyl Acetate/Ethanol Media by Dispersion Polymerization CAO Kang-Li, SHI Tie-Jun, ZHAI Lin-Feng, CAO Jin-Yan, WANG Hua-Lin School of Chemical Engineering, Heifei University of Technology, Heifei 230009, China ...

Get Price
dispersion polymerization in environmentally benign

Dispersion polymerization in environmentally benign

1. Introduction. Dispersion polymerization has been the technique of choice for the preparation of microspheres (200 nm to several μm) that find widespread applications in coating, bioassay, print ink, separation, and catalyst support [].Key to the formation of stable and uniform microspheres is effective stabilization of the nascent particle seeds during the highly sensitive nucleation stage ...

Get Price
self-assembly of hydrophobic associating polyacrylamide

Self-assembly of hydrophobic associating polyacrylamide

Hydrophobic associating polyacrylamide (PDH) was prepared via aqueous dispersion polymerization in the presence of ammonium sulfate. In order to dissolve the polymer at high salt solution concentration, a hydrophobic precursor monomer with two cationic heads was synthesized.

Get Price
anionic and cationic polymerization

Anionic and Cationic Polymerization

Carbon–carbon double bond undergoes polymerization by both radical and ionic initiators. Carbonyl group Carbon–carbon double bond The difference arises because the p‐bond of a vinyl monomer can respond appropriately to the initiator species by either homolytic or heterolytic bond breakage:

Get Price
阳离子聚丙烯酰胺水包水乳液分散聚合条件的研究

阳离子聚丙烯酰胺水包水乳液分散聚合条件的研究

Preparation Conditions for Cationic Polyacrylamide Water-in-Water Emulsion by Dispersion Polymerization[J]. Petrochemical Technology, 2010, 39(10): 1140-1145. 使用本文

Get Price