Kinetics of Thermal Degradation of Copolymers of Acrylamide with Sodium Acrylate in Aqueous Solutions

Kurenkov, V. F.; Trofimov, P. V.; Kurenkov, A. V.; Khartan, Kh.-G.; Lobanov, F. I.

doi:10.1007/s11167-005-0435-4

Cited by 4 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Normally, gel permeation chromatography (GPC) is a reliable method for measuring polymer molecular weights. However, in the literature molecular weights of AAm/AAc copolymer have mainly been determined by intrinsic viscometry or light scattering . This is because accurately measuring the molecular weight of high molecular weight polyelectrolytes with GPC is especially complicated, due to the polyelectrolyte nature of the copolymer that affects the mechanism of separation in the GPC columns.…”

Section: Introductionmentioning

confidence: 99%

Effect of Monomer Concentration and pH on Reaction Kinetics and Copolymer Microstructure of Acrylamide/Acrylic Acid Copolymer

Riahinezhad

McManus

Penlidis

2015

Macro Reaction Engineering

View full text Add to dashboard Cite

Acrylamide (AAm)/acrylic acid (AAc) copolymer application performance is tied to copolymer properties, which in turn are related to the kinetics of the copolymerization. A systematic study has been conducted to investigate the effect of reaction factors such as total monomer concentration and solution pH on polymerization kinetics and copolymer microstructure. To study the effect of these factors, reliable reactivity ratios were estimated first. The trends in copolymer composition, molecular weight, sequence length distribution, and triad fractions were subsequently examined. Having a better understanding of kinetic profiles is needed in order to manipulate influential factors for tailoring AAm/AAc copolymer properties for the desired application.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Monomer Concentration and pH on Reaction Kinetics and Copolymer Microstructure of Acrylamide/Acrylic Acid Copolymer

Riahinezhad

McManus

Penlidis

2015

Macro Reaction Engineering

View full text Add to dashboard Cite

show abstract

“…26 However, in another study using the Mark-Houwink equation method, it was found that the M w of HPAM (hydrolysis degree: 28%) decreased from 1.6 Â 10 6 to 1.35 Â 10 6 , 0.48 Â 10 6 , 0.87 Â 10 6 , 1.14 Â 10 6 and 1.26 Â 10 6 g mol À1 even aer being treated at 26, 40, 60, 70 and 80 C for 4 hours. 27 It seemed that the SLS and GPC methods exhibited similar results, but the Mark-Houwink equation method gave some different results. The latter one gives the measurement results based on the intrinsic viscosity of polymer solutions, which might be affected by the change of the hydrolysis degree.…”

Section: The Molecular Weight (M W ) Changes Of Hpammentioning

confidence: 99%

Changes of flooding reagents' properties under simulated high temperature/pressure conditions in oil reservoirs and their impact on emulsion stability

Chen

Gao

et al. 2019

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Polyacrylamide-based (PAM-based) polymers are known to be sensitive and susceptible to degradation during various applications [41][42][43][44][45]. For example, PAM-based polymers are prone to mechanical degradation when exposed to turbulent flow in channels, leading to chain scission [46][47][48][49].…”

mentioning

confidence: 99%

Degradation of Cationic Polyacrylamide Flocculants upon Contact with Metal Surfaces during Rheological Measurements

Loukili,

Chitanu,

Jossic

et al. 2024

Preprint

View full text Add to dashboard Cite

Cationic polyacrylamide (CPAM) flocculants, commonly employed in wastewater treatment plants, experience degradation when in contact with various surfaces. This study investigates the degradation process of several CPAMs upon contact with metal surfaces during rheological measurements. The study focuses on observing changes in the rheological properties of CPAM, transitioning from elastic to viscous behavior under the influence of shear and oscillatory solicitations within metallic Couette systems. A detailed examination of how the degradation process is affected by various factors like Couette material, polymer composition, concentration, and temperature is presented. Key findings suggest that degradation predominantly results from chemical interactions rather than mechanical stress, leading to changes in molecular weight, hydrolysis of cationic groups, and alterations in ionic strength. Techniques including Fourier Transform Infrared (FTIR) spectroscopy, Nuclear Magnetic Resonance (NMR) analysis, and polyelectrolyte titration were utilized to analyze these molecular changes. This study provides essential insights into the behavior of CPAM in contact with metal surfaces, offering implications for its application in various environmental and industrial processes.

show abstract

Kinetics of Thermal Degradation of Copolymers of Acrylamide with Sodium Acrylate in Aqueous Solutions

Abstract: The kinetics of thermal degradation of commercial samples of copolymers of acrylamide with sodium acrylate of various molecular characteristics in water and 1.5% NaCl aqueous solutions at 40 380oC was studied viscometrically.

Cited by 4 publications

References 3 publications

Effect of Monomer Concentration and pH on Reaction Kinetics and Copolymer Microstructure of Acrylamide/Acrylic Acid Copolymer

Effect of Monomer Concentration and pH on Reaction Kinetics and Copolymer Microstructure of Acrylamide/Acrylic Acid Copolymer

Changes of flooding reagents' properties under simulated high temperature/pressure conditions in oil reservoirs and their impact on emulsion stability

Degradation of Cationic Polyacrylamide Flocculants upon Contact with Metal Surfaces during Rheological Measurements

Contact Info

Product

Resources

About