Impact of Heat Treatment on the Performance of Polymers as Ferric Ions Stabilization Agents for Aqueous Systems
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Z. Amjad
Abstract
The impact of heat treatment on the performance of various polymers as ferric ions stabilization agents in an aqueous system at pH 7.00, 23 °C has been investigated. The polymers evaluated include: (a) homo-polymers of acrylic acid, methacrylic acid, maleic acid, 2-acrylamido-2-methylpropane sulfonic acid, sulfonated styrene; (b) co-polymers of acrylic acid: 2-acrylamido-2-methylpropane sulfonic acid and maleic acid: sulfonated styrene, and (c) ter-polymers of acrylic acid: 2-acryalamido-2-methylpropane sulfonic acid: sulfonated styrene, acrylic acid: methacrylic acid: t-butylacrylamide, and acrylic acid: 2-acrylamido-2-methylpropane sulfonic acid: t-butylacrylamide. It has been found that all polymers lose performance to a varying degree when exposed to thermal treatment (150 °C, 200 °C, 240 °C, 20 hr). The performance data collected before and after thermal treatment suggest that sulfonated styrene containing co- and ter-polymers are better ferric ions stabilization agents than the co- and ter-polymers containing 2-acrylamido-2-methylpropane sulfonic acid and t-butylacrylamide. In addition, it has been found that heat treatment exhibits positive influence on the performance of homo-polymer of 2-acrylamido-2-methypropane sulfonic acid. The results have been explained in terms of loss of 2-acrylamido-2-methylpropane sulfonic acid and t-butylacrylamide in the co- and ter-polymers during thermal treatment.
Kurzfassung
Der Auswirkung einer Wärmebehandlung auf die Leistungsfähigkeit verschiedener Polymere als Stabilisierungsmittel für Eisenionen wurde bei pH 7.00, 23 °C in wässrigen System untersucht. Die bewerteten Polymere waren: (a) Homopolymere der Acrylsäure, Methacrylsäure, Maleinsäure, 2-Acrylamido-2-methylpropansulfonsäure, sulfoniertes Styrol; (b) Copolymere von Acrylsäure: 2-Acrylamido-2-methylpropansulfonsäure und Maleinsäure: sulfoniertes Styrol und (c) Terpolymere von Acrylsäure: 2-Acrylamido-2-methylpropansulfonsäure: sulfoniertes Styrol, Acrylsäure: Methacrylsäure: t-Butylacrylamid und Acrylsäure: 2-Acrylamido-2-methylpropansulfonsäure: t-Butylacrylamid. Es wurde gefunden, dass alle Polymere an Leistungsfähigkeit mit unterschiedlichem Ausmaß einbüßen, wenn sie einer thermischen Behandlung (150 °C, 200 °C, 240 °C, 20 h) ausgesetzt werden. Die gesammelten Leistungswerte, vor und nach der thermischen Behandlung, zeigen, dass sulfonierte Styrole mit Co- und Terpolymeren bessere Stabilisierungsmittel für Eisenionen sind als Co- und Terpolymere mit 2-Acrylamido-2-methylpropansulfonsäuren und t-Butylacrylamiden. Außerdem wurde gefunden, dass die Wärmebehandlung einen positiven Einfluss auf die Leistungsfähigkeit von Homopolymeren der 2-Acrylamido-2-methylpropansulfonsäure besitzt. Die Ergebnisse sind erklärbar durch einen Verlust an 2-Acrylamido-2-methylpropansulfonsäure und t-Butylacrylamid bei den Co- und Terpolymeren während der thermischen Behandlung.
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© 2008, Carl Hanser Publisher, Munich
Articles in the same Issue
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Impact of Heat Treatment on the Performance of Polymers as Ferric Ions Stabilization Agents for Aqueous Systems
- Novel Surfactants
- Preparation and Performance Properties of a Series of Novel Anionic Gemini Surfactants
- Biologically Active Tin Compounds Based on Aziridine and Azepane Derivatives
- Obituary
- Obituary
- Synthesis
- Synthesis and Properties Evaluation of Nonionic-Anionic Surfactants Suitable for Enhanced Oil Recovery Using Sea Water
- Synthesis and Characterisation of Antifungal Agents Containing Copper(II) Soaps and Derived from Mustard and Soyabean Oil
Articles in the same Issue
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Impact of Heat Treatment on the Performance of Polymers as Ferric Ions Stabilization Agents for Aqueous Systems
- Novel Surfactants
- Preparation and Performance Properties of a Series of Novel Anionic Gemini Surfactants
- Biologically Active Tin Compounds Based on Aziridine and Azepane Derivatives
- Obituary
- Obituary
- Synthesis
- Synthesis and Properties Evaluation of Nonionic-Anionic Surfactants Suitable for Enhanced Oil Recovery Using Sea Water
- Synthesis and Characterisation of Antifungal Agents Containing Copper(II) Soaps and Derived from Mustard and Soyabean Oil