Mengyu Cao , Lei Wang , Aihua Li, Xiaolong Yang, Xiaole Gong, Jiang-Tao Xu, Jingquan Liu
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引用次数: 0
Abstract
Poly(maleic anhydride) (PMA) is commonly reckoned as a better water scale inhibitor than poly(acrylic acid) (PAA) since each maleic anhydride unit can supply two carboxylic acid groups. However, pure PMA is difficult to achieve because the steric effect of its monomer MA. Herein, we synthesize copoly(MA-AA) copolymer by bulk polymerization method (bulk-copoly(MA-AA)), which avoids the use of any solvents which have to be removed afterwards. In addition, we also synthesize copoly(MA-AA) by reversible addition-fragmentation chain transfer (RAFT) polymerization method to afford RAFT-copoly(MA-AA) with low polydispersity index (PDI) less than 1.2, and the performance of RAFT-copoly(MA-AA) in water scale inhibition is more excellent relative to bulk-copoly(MA-AA). We also synthesize other copoly(MA-AA) copolymers by varying the molar ratio of MA to AA to study the polymerization mechanism. Through the static scale inhibition experiment, it is concluded that when the concentration of copoly(MA-AA) is 80 mg/L, the scale inhibition performance of RAFT-copoly(MA-AA) can reach 96.50 % which is the best among the control samples. It is also found that only 1:1 alternating copolymerization of MA and AA could be achieved as demonstrated by 1H nuclear magnetic resonance spectra of the copolymers, evidencing the strong steric hindrance of MA for its homo-polymerization.
期刊介绍:
European Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine. The main scope is covered but not limited to the following core research areas:
Polymer synthesis and functionalization
• Novel synthetic routes for polymerization, functional modification, controlled/living polymerization and precision polymers.
Stimuli-responsive polymers
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Supramolecular polymers and self-assembly
• Molecular recognition and higher order polymer structures.
Renewable and sustainable polymers
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Polymers at interfaces and surfaces
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Biomedical applications and nanomedicine
• Polymers for regenerative medicine, drug delivery molecular release and gene therapy
The scope of European Polymer Journal no longer includes Polymer Physics.