Studies on Preparation of Enhanced Bacterial Cellulose/Polyvinyl Alcohol Hydrogels

Cai-zhen JIAO; Ling DING; Xin CHEN; Ji ZHANG

doi:10.14028/j.cnki.1003-3726.2019.02.008

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Studies on Preparation of Enhanced Bacterial Cellulose/Polyvinyl Alcohol Hydrogels

The 30th Anniversary Issue II | 更新时间：2022-09-02

- Studies on Preparation of Enhanced Bacterial Cellulose/Polyvinyl Alcohol Hydrogels
- Polymer Bulletin Vol. 32, Issue 2, Pages: 63-74(2019)
- 作者机构：
  
  1.西北师范大学地理与环境科学学院，兰州 730070
  2.甘肃特色植物有效成分制品工程技术研究中心，兰州 730070
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2019.02.008
  CLC：
- Published：20 February 2019，
  
  Received：09 November 2018，
  
  Revised：15 November 2018，
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Cai-zhen JIAO, Ling DING, Xin CHEN, Ji ZHANG. Studies on Preparation of Enhanced Bacterial Cellulose/Polyvinyl Alcohol Hydrogels. [J]. Polymer Bulletin 32(2):63-74(2019)
DOI：

Cai-zhen JIAO, Ling DING, Xin CHEN, Ji ZHANG. Studies on Preparation of Enhanced Bacterial Cellulose/Polyvinyl Alcohol Hydrogels. [J]. Polymer Bulletin 32(2):63-74(2019) DOI： 10.14028/j.cnki.1003-3726.2019.02.008.

摘要

基于细菌纤维素的水凝胶，因其疏松多孔和环境友好的特点而被认为在废水处理中具有潜在的应用前景。在本研究中，我们利用氧化石墨烯和凹凸棒土来增强细菌纤维素／聚乙烯醇复合水凝胶的吸附性能，并以染料刚果红（CR）为例进行了测试。FTIR、XRD、SEM、BET和TG-DSC分析结果表明，增强后的水凝胶具有更好的亲水性、更大的比表面积和良好的热稳定性。吸附实验遵循准一级动力学和Freundlich等温模型，并且增强后的水凝胶的溶胀性能和吸附能力均显著提高，特别是在酸性条件下。此外，制备的水凝胶显示出有效去除CR的可重复使用性。因此，该水凝胶有望用作酸性染料废水处理中的吸附剂。

Abstract

Bacterial cellulose-based hydrogels are considered to have potential applications in wastewater treatment owing to their loose porous and environmental friendliness. In this research

we utillize the graphene oxide and the attapulgite to enhance the adsorption performance of bacterial cellulose/polyvinyl alcohol composite hydrogel

and have tested it with the dye congo red (CR) as an example. The FTIR

XRD

SEM

BET and TG-DSC analysis results indicate that after the enhanced hydrogel has better hydrophilicity

larger specific surface area and good thermal stability. In the adsorption tests

we find the adsorption exhibited a pseudo-first-order kinetics and Freundich isothermal. The enhanced hydrogel has a better swelling property and thus higher adsorption capacity

especially under acidic conditions. In addition

the prepared hydrogels show reusability for the efficient removal of CR. Consequently

our hydrogels are expected to be used as adsorbents in acid dye wastewater treatment.

关键词

细菌纤维素聚乙烯醇氧化石墨烯凹凸棒石吸附刚果红

Keywords

Bacterial cellulosePolyinyl alcoholGraphite oxideAttapulgiteAdsorptionCongo red

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