DOI: 10.1016/j.watres.2018.04.021
Scopus记录号: 2-s2.0-85054423475
论文题名: Evaluation of the structural morphology of starch-graft-poly(acrylic acid) on its scale-inhibition efficiency
作者: Yu W. ; Wang Y. ; Li A. ; Yang H.
刊名: Water research
ISSN: 18792448
出版年: 2018
卷: 141 起始页码: 86
结束页码: 95
语种: 英语
英文关键词: Grafted-chain distribution
; Grafting ratio
; Inhibition mechanism
; Scale inhibition
; Starch-graft-poly(acrylic acid)
; Structural morphology
Scopus关键词: acrylic acid resin
; carbopol 940
; starch
; chemical structure
; chemistry
; infrared spectroscopy
; procedures
; proton nuclear magnetic resonance
; scanning electron microscopy
; ultrastructure
; water management
; X ray diffraction
; Acrylic Resins
; Microscopy, Electron, Scanning
; Molecular Structure
; Proton Magnetic Resonance Spectroscopy
; Spectroscopy, Fourier Transform Infrared
; Starch
; Water Purification
; X-Ray Diffraction
英文摘要: The development of phosphorus-free and biodegradable scale inhibitors has been paid considerable attention. Two series of starch-graft-poly(acrylic acid) (St-g-PAA) samples with different grafting ratios and grafted-chain distributions, that is, the number and length of grafted PAA chains on the starch backbone, were designed and prepared in this study. Fourier transform infrared and 1H nuclear magnetic resonance spectra were used to further characterize the molecular structures of the St-g-PAAs. In addition to dose, the effects of the structural morphologies of St-g-PAA, namely, grafting ratio and grafted-chain distribution, on the scale-inhibition performance against calcium carbonate were investigated systematically. Structural morphology significantly influenced the scale-inhibition performance of St-g-PAA. St-g-PAA with relatively low grafting ratio (≤97%) displayed better scale-inhibition effect than samples with similar grafted-chain distributions. Meanwhile, under the similar grafting ratios, samples with higher number of branched chains with shorter grafted chains displayed better antiscaling performance. Thus, higher scale-inhibition rate and lower corresponding optimal dose were obtained. Different scale-inhibition mechanisms were involved in the effects of the structural morphology. These mechanisms were investigated in detail from the molecular levels using scanning electron microscopy and X-ray diffraction. Copyright © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112656
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
Recommended Citation:
Yu W.,Wang Y.,Li A.,et al. Evaluation of the structural morphology of starch-graft-poly(acrylic acid) on its scale-inhibition efficiency[J]. Water research,2018-01-01,141