Temperature controlled adsorption of polyethyleneimine on the sepiolite surface

IF 5.3 2区地球科学 Q2 CHEMISTRY, PHYSICAL

Applied Clay Science Pub Date : 2023-09-15 DOI:10.1016/j.clay.2023.107052

E. Godek , U. Maciołek , A. Gawryszuk-Rżysko , J. Pawłat , M. Kosińska-Pezda , E. Grządka

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引用次数: 0

Abstract

The effects of temperature (15, 25 and 35 °C) on the adsorption properties of polyethyleneimine (PEI) on the sepiolite (Sep) surface and some properties of the Sep/PEI suspensions including their stability were studied. It was shown that the increase in temperature caused larger adsorption of PEI macromolecules on the Sep surface, which was the effect of the spacious PEI conformation at higher temperatures. Stability of the Sep/PEI suspension was also better when temperature was higher due to effective electrosteric stabilization. The obtained results indicate how the temperature influences the textural and electrokinetic properties of the Sep/PEI systems. The following analytical methods: UV–Vis spectrophotometry, XRD, nitrogen adsorption-desorption method, elemental analysis, SEM-EDX, FT-IR, TG-DSC, viscometry and zeta potential measurements were used in the performed research. The presented findings can be successfully used to create hybrid materials dedicated to water and wastewater treatment as well as in the gas capture processes.

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聚乙烯亚胺在海泡石表面的温度控制吸附

研究了温度(15℃、25℃和35℃)对聚乙烯亚胺(PEI)在海泡石(Sep)表面吸附性能的影响，以及Sep/PEI悬浮液的稳定性。结果表明，随着温度的升高，PEI大分子在Sep表面的吸附量增大，这是高温下PEI构象宽敞的影响。由于有效的静电稳定作用，Sep/PEI悬浮液在温度较高时稳定性也较好。所得结果表明温度对Sep/PEI体系的织构和电动力学性能的影响。采用了紫外-可见分光光度法、XRD、氮吸附-解吸法、元素分析、SEM-EDX、FT-IR、TG-DSC、粘度法和zeta电位测定等分析方法。所提出的发现可以成功地用于制造专用于水和废水处理以及气体捕获过程的混合材料。

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来源期刊

Applied Clay Science 地学-矿物学

CiteScore

10.30

自引率

10.70%

发文量

289

审稿时长

39 days

期刊介绍： Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...