Performance improvement of a modified copolymer as an antiscalant and microbial growth inhibitor

IF 1.7 4区 工程技术 Q4 POLYMER SCIENCE
Fatemeh Karchoubi , Mahsa Baghban Salehi , Reza Panahi , Shahriar Salemi Parizi
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Abstract

Prevention and control of calcium sulfate scale formation and microbial growth accumulation in water handling systems is one of the challenging operations to avoid corrosion and flow restriction through equipment. This paper examines modified low-molecular-weight Maleic Anhydride (MAn) copolymerized by Acrylamide (AAm), which was successfully synthesized, developed, and analyzed as a multifunctional non-phosphorous antiscalant to overcome these problems. The structure, morphology, and thermal property of poly(MAn-co-AAm) were characterized. The intended structure and copolymerization were confirmed through GPC, FT-IR, SEM, and EDX analyses. The high thermal resistivity up to 400 °C was observed via TGA analysis. The standard NACE TM0374 methodologies were applied to evaluate the scale controlling capacity of poly(MAn-co-AAm) at various dosages (1–20 ppm), temperatures (50–90 °C), and regular intervals of 24–72 h. Interestingly, for low values of poly(MAn-co-AAm), efficiency was found 100% at the third level within the standard state. Further SEM and XRD analyses emphasized the validity of successful inhibition of calcium sulfate scale formation in comparison with other antiscalant agents, even at very low concentrations. In addition, antibacterial properties of poly(MAn-co-AAm) were investigated against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The results revealed that the developed copolymer possesses a wide antibacterial activity against both Gram-negative and Gram-positive bacteria. With this in mind, poly(MAn-co-AAm) is believed to be an effective and economical multifunctional antiscalant in cooling water treatment systems.

改性共聚物抗垢剂和微生物生长抑制剂的性能改进
预防和控制水处理系统中硫酸钙结垢的形成和微生物的生长积累是避免设备腐蚀和流动限制的具有挑战性的操作之一。本文研究了丙烯酰胺(AAm)共聚改性的低分子量马来酸酐(MAn),成功地合成、开发并分析了它作为一种多功能无磷抗垢剂来克服这些问题。对聚MAn-co-AAm的结构、形貌和热性能进行了表征。通过GPC, FT-IR, SEM和EDX分析证实了预期的结构和共聚。通过热重分析,观察到其高达400℃的高温电阻率。采用标准的NACE TM0374方法,在不同剂量(1 - 20ppm)、不同温度(50-90°C)和不同间隔时间(24-72 h)下,评估聚(MAn-co-AAm)的控垢能力。有趣的是,对于低聚(MAn-co-AAm)值,在标准状态下的第三级效率为100%。进一步的SEM和XRD分析强调了与其他抗结垢剂相比,即使在非常低的浓度下,硫酸钙也能成功抑制结垢的有效性。此外,还研究了聚MAn-co-AAm对金黄色葡萄球菌(S. aureus)和大肠杆菌(E. coli)的抑菌性能。结果表明,该共聚物对革兰氏阴性菌和革兰氏阳性菌均具有广泛的抗菌活性。考虑到这一点,聚(MAn-co-AAm)被认为是一种有效和经济的多功能防垢剂,用于冷却水处理系统。
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来源期刊
CiteScore
3.50
自引率
5.30%
发文量
37
审稿时长
1.6 months
期刊介绍: The scope of the journal is to publish original contributions and reviews on studies, methodologies, instrumentation, and applications involving the analysis and characterization of polymers and polymeric-based materials, including synthetic polymers, blends, composites, fibers, coatings, supramolecular structures, polysaccharides, and biopolymers. The Journal will accept papers and review articles on the following topics and research areas involving fundamental and applied studies of polymer analysis and characterization: Characterization and analysis of new and existing polymers and polymeric-based materials. Design and evaluation of analytical instrumentation and physical testing equipment. Determination of molecular weight, size, conformation, branching, cross-linking, chemical structure, and sequence distribution. Using separation, spectroscopic, and scattering techniques. Surface characterization of polymeric materials. Measurement of solution and bulk properties and behavior of polymers. Studies involving structure-property-processing relationships, and polymer aging. Analysis of oligomeric materials. Analysis of polymer additives and decomposition products.
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