Preparation of Ethyl Cellulose-based Microcapsule and Its Adsorption Properties

MA Guo-yan; WEI Wen-jing; YANG Xing-wang; LIN Deng-feng; YANG Yan-zhe

doi:10.14028/j.cnki.1003-3726.2025.25.203

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Preparation of Ethyl Cellulose-based Microcapsule and Its Adsorption Properties

更新时间：2025-10-30

- Preparation of Ethyl Cellulose-based Microcapsule and Its Adsorption Properties
- Polymer Bulletin Vol. 38, Issue 11, Pages: 1651-1658(2025)
- 作者机构：
  
  1.西安石油大学化学化工学院，西安 710065
  2.西安长庆化工集团有限公司，西安 710200
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.25.203
  CLC：
- Received：28 August 2025，
  
  Accepted：16 September 2025，
  
  Published Online：14 October 2025，
  
  Published：20 November 2025
- 稿件说明：
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马国艳, 魏雯婧, 杨兴旺, 吝登峰, 杨延哲. 乙基纤维素基微胶囊的制备及其吸附性能. 高分子通报, 2025, 38(11), 1651-1658.

Ma, G. Y.; Wei, W, J.; Yang, X. W.; Lin, D. F.; Yang, Y. Z. Preparation of ethyl cellulose-based microcapsule and its adsorption properties. Polym. Bull. (in Chinese), 2025, 38(11), 1651-1658.
马国艳, 魏雯婧, 杨兴旺, 吝登峰, 杨延哲. 乙基纤维素基微胶囊的制备及其吸附性能. 高分子通报, 2025, 38(11), 1651-1658. DOI： 10.14028/j.cnki.1003-3726.2025.25.203.

Ma, G. Y.; Wei, W, J.; Yang, X. W.; Lin, D. F.; Yang, Y. Z. Preparation of ethyl cellulose-based microcapsule and its adsorption properties. Polym. Bull. (in Chinese), 2025, 38(11), 1651-1658. DOI： 10.14028/j.cnki.1003-3726.2025.25.203.

摘要

以乙基纤维素(EC)为壳层材料，对十四烷酸进行包覆，制备了一种乙基纤维素基微胶囊EASK，旨在解决染料废水污染问题。通过傅里叶变换红外吸收光谱(FTIR)和扫描电子显微镜(SEM)对其结构进行了表征。以亚甲基蓝为模型污染物，考察了不同吸附时间、温度以及初始浓度条件下，EASK对亚甲基蓝的吸附性能。结果表明，EASK是以EC为壁材，十四烷酸为芯材的微胶囊；其对亚甲基蓝的去除率可达84.13%，最大平衡吸附浓度为35.10 mg·g

−1

。通过Langmuir等温模型拟合，其理论最大平衡吸附容量可达51.20 mg·g

−1

。吸附热力学计算结果表明，该吸附反应为自发吸热过程。此外，EASK在经过5次吸附循环再生后，平衡吸附容量仍能达到初始平衡吸附容量的80.5%，显示出良好的吸附性能和可重复使用性。

Abstract

Ethyl cellulose-based microcapsule (EASK) was prepared using ethyl cellulose (EC) as the shell material and tetradecanoic acid as the core

aiming to address the issue of dye wastewater pollution. The structures were characterized by Fourier transform infrared absorption spectroscopy (FTIR) and scanning electron microscopy (SEM). The adsorption performance of EASK on methylene blue

used as a model pollutant

was investigated under various conditions including different adsorption times

temperatures

and initial concentrations. Results indicated that EASK

composed of EC as the wall material and tetradecanoic acid as the core material

could remove up to 84.13% of methylene blue

achieving a maximum equilibrium adsorption concentration of 35.10 mg·g

−1

. The theoretical maximum equilibrium adsorption concentration of EASK was found to be 51.20 mg·g

−1

by fitting the Langmuir isothermal model. The adsorption thermodynamic calculations showed that the adsorption reaction was a spontaneous heat absorption process. Additionally

after five adsorption cycles of regeneration

the equilibrium adsorption concentration of EASK could still reach 80.5% of the initial equilibrium adsorption concentration

demonstrating good adsorption performance and reusability.

关键词

Keywords

references

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