Synthesis of multicarboxylic hyperbranched polyglycerol (HPG) modified monodisperse superparamagnetic poly (glycidyl methacrylate) microspheres for capable dye adsorption

IF 2.6 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2025-03-22 DOI:10.1007/s10965-025-04269-4

Hengbo Lei, Xiang Cao, Yuguo Tang

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Abstract

Monodisperse superparamagnetic poly (glycidyl methacrylate) microspheres (PGMA-HPG-COOH) with carboxyl group were synthesized and applied to treatment of cationic dyes wastewater. The composite adsorbent not only has good adsorption selectivity for cationic dyes (e.g., methylene blue (MB) and rhodamine 6G (R6G)), but also has convenient magnetic separation characteristics. The optimal pH for the adsorption of methylene blue was determined as pH 7, which was associated with the surface charge of adsorbent. Due to its ultra-high hydrophilicity, PGMA-HPG-COOH demonstrated a remarkably rapid adsorption rate for MB and R6G, and the adsorption saturation level of 95% can be achieved within just 10 min. The adsorption data showed nice correlation with pseudo-second-order kinetic model and Langmuir isotherm. The theoretical maximum adsorption capacity of PGMA-HPG-COOH for MB and R6G can reach 238.1 mg/g and 227.27 mg/g, respectively. Futhermore, PGMA-HPG-COOH can be effectively regenerated using a binary HCl-ethanol solution, maintaining the adsorption efficiency of 91.7% after five cycles of recycling. These findings substantiate the promising potential of the PGMA-HPG-COOH adsorbent for application in water treatment processes.

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.