Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition
The anti-scaling agent poly(aspartic acidic) (PASP) polymers had became a hot research topic based on its peptide bond structures with degradation characteristics. However, it was difficult to control the chain length distributions of the synthesized products, which led to difficulty in determining...
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Elsevier
2024-04-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535224001199 |
| _version_ | 1827311176614150144 |
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| author | Linlin Zhao Fei Wang Xiaojuan Zhang Yu Han Yuxia Wang Zhenli Yang Zhongyan Cao Yufeng Wu Ying Xu |
| author_facet | Linlin Zhao Fei Wang Xiaojuan Zhang Yu Han Yuxia Wang Zhenli Yang Zhongyan Cao Yufeng Wu Ying Xu |
| author_sort | Linlin Zhao |
| collection | DOAJ |
| description | The anti-scaling agent poly(aspartic acidic) (PASP) polymers had became a hot research topic based on its peptide bond structures with degradation characteristics. However, it was difficult to control the chain length distributions of the synthesized products, which led to difficulty in determining the scaling mechanism for the peptide bond products. In this paper, PASP/8AC graft modified polymers with a narrow dispersity (Ð) and controllable chain lengths was synthesized via a simple two-step method, and 8-aminooctanoic acid (8AC) was introduced into the peptide bond structure of PASP with main chain lengths of 12. The effects of the side-chain lengths and functional groups on the scale inhibition mechanism were determined. The static scale inhibition results showed that the grafted products had significantly improved scale inhibition efficiencies at low concentrations and good temperature and time stabilities. The inhibition rate for CaSO4 scaling was increased by almost 60 % at a concentration of 3 mg/L. At 5 mg/L, the inhibition rate for CaCO3 scaling was increased by 36 %. X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) showed that side chain length extensions improved calcium ion chelation by the PASP and increased calcium scale lattice distortion. This study verified the effects of side chains on PASP scale inhibition and its mechanism. This is of great importance in designing new green water treatment agents. |
| first_indexed | 2024-04-24T20:12:43Z |
| format | Article |
| id | doaj.art-0ca221e0b96c464f903e78509a89ce31 |
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| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-24T20:12:43Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-0ca221e0b96c464f903e78509a89ce312024-03-23T06:23:47ZengElsevierArabian Journal of Chemistry1878-53522024-04-01174105717Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibitionLinlin Zhao0Fei Wang1Xiaojuan Zhang2Yu Han3Yuxia Wang4Zhenli Yang5Zhongyan Cao6Yufeng Wu7Ying Xu8College of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 China; Henan Chemical Technicina College, Kaifeng 475004 ChinaZhengzhou Dongxing Environmental Energy Co., Ltd., Zhengzhou 451450 ChinaCollege of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 ChinaCollege of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 ChinaCollege of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 ChinaHenan Chemical Technicina College, Kaifeng 475004 ChinaCollege of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 China; Corresponding authors.College of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 China; Corresponding authors.College of Chemistry and Molecular Sciences Henan University, Kaifeng 475004 China; Corresponding authors.The anti-scaling agent poly(aspartic acidic) (PASP) polymers had became a hot research topic based on its peptide bond structures with degradation characteristics. However, it was difficult to control the chain length distributions of the synthesized products, which led to difficulty in determining the scaling mechanism for the peptide bond products. In this paper, PASP/8AC graft modified polymers with a narrow dispersity (Ð) and controllable chain lengths was synthesized via a simple two-step method, and 8-aminooctanoic acid (8AC) was introduced into the peptide bond structure of PASP with main chain lengths of 12. The effects of the side-chain lengths and functional groups on the scale inhibition mechanism were determined. The static scale inhibition results showed that the grafted products had significantly improved scale inhibition efficiencies at low concentrations and good temperature and time stabilities. The inhibition rate for CaSO4 scaling was increased by almost 60 % at a concentration of 3 mg/L. At 5 mg/L, the inhibition rate for CaCO3 scaling was increased by 36 %. X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) showed that side chain length extensions improved calcium ion chelation by the PASP and increased calcium scale lattice distortion. This study verified the effects of side chains on PASP scale inhibition and its mechanism. This is of great importance in designing new green water treatment agents.http://www.sciencedirect.com/science/article/pii/S1878535224001199Polyaspartic acid8-Aminooctanoic acidScale inhibitionMechanism |
| spellingShingle | Linlin Zhao Fei Wang Xiaojuan Zhang Yu Han Yuxia Wang Zhenli Yang Zhongyan Cao Yufeng Wu Ying Xu Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition Arabian Journal of Chemistry Polyaspartic acid 8-Aminooctanoic acid Scale inhibition Mechanism |
| title | Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition |
| title_full | Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition |
| title_fullStr | Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition |
| title_full_unstemmed | Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition |
| title_short | Syntheses, properties and mechanistic studies of 8-aminooctanoic acid-modified polyaspartic acid polymers for calcium scale inhibition |
| title_sort | syntheses properties and mechanistic studies of 8 aminooctanoic acid modified polyaspartic acid polymers for calcium scale inhibition |
| topic | Polyaspartic acid 8-Aminooctanoic acid Scale inhibition Mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S1878535224001199 |
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