Double‐hydrophilic polyether antiscalant used as a crystal growth modifier of calcium scales in cooling‐water systems. Issue 2 (20th August 2013)

• Record Type: Journal Article
• Authors: Liu, Yahui; Zhou, Yuming; Yao, Qingzhao; Huang, Jingyi; Liu, Guangqing; Wang, Huchuan; Cao, Ke; Chen, Yiyi; Bu, Yunyun; Wu, Wendao; Sun, Wei
• Is Part Of: Journal of applied polymer science. Volume 131:Issue 2(2014:Jan. 15)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2013-08-20
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.39792
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>In this study, we synthesized a novel double‐hydrophilic poly(ethylene glycol) (PEG)‐based crystal growth modifier polyethylene glycol double‐ester of maleic anhydride/ acrylic acid named PEGDMA/AA, whose structure was still linear but also had some differences from a traditional chelating linear polymer, in which the PEG segment was incorporated. The scale inhibition behavior of PEGDMA/AA was evaluated by means of a static scale inhibition method. As the polymerization degree of PEG<sub><italic>n</italic></sub>DMA was 8 (<italic>n</italic> = 8), the maximum inhibitory toward calcium carbonate (CaCO<sub>3</sub>) and calcium sulfate (CaSO<sub>4</sub>) were 89.0 and 98.8% at dosage levels of 12 and 3 mg/L, respectively. Comparisons with other inhibitors were also carried out. Characterization of the CaCO<sub>3</sub> and CaSO<sub>4</sub> scales with scanning electron microscopy and transmission electron microscopy proved that great changes in the size and morphology of the calcium scales took place under the influence of PEG<sub>8</sub>DMA/AA. X‐ray diffraction and diffraction patterns further confirmed the impact of PEG<sub>8</sub>DMA/AA as a crystal growth modifier. The three supposed mechanisms, (1) chelating solubilization, (2) multilayer type of adsorption, and (3) electrostatic repulsion function, are also described in detail. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. <bold>2014</bold>, <italic>131</italic>, 39792.</p> </abstract>