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首页> 外文期刊>Reactive & Functional Polymers >Mechanical, swelling and adsorptive properties of dry-wet spun chitosan hollow fibers crosslinked with glutaraldehyde
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Mechanical, swelling and adsorptive properties of dry-wet spun chitosan hollow fibers crosslinked with glutaraldehyde

机译：戊二醛交联的干湿纺丝壳聚糖中空纤维的机械，溶胀和吸附性能

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摘要

Chitosan (CS) hollow fiber (HF) membranes were successfully prepared according to the dry-wet spinning technique. A post-treatment with glutaraldehyde (GA) aqueous solution was carried out to perform the cross-linking reaction. The effect of GA concentration in the range 50-1000 mg l~(-1) on the swelling, mechanical and adsorptive properties was investigated. The morphology and chemical structure of the fibers were examined by means of SEM and FTIR. The degree of swelling and adsorption capacity decreased as the GA concentration increased. CS hollow fibers swelled the most in acidic solution as compared with distilled water and saline solution. The adsorption capacity of CS HFs increased while decreasing of initial pH from 7.5 to 3.5. Desorption experiments showed that CS HFs were reusable as adsorbent. Mechanical properties were strongly affected by GA post-treatment: tensile strength and elastic modulus increased at low GA concentration (50 mg l~(-1)), to sharply decrease when concentration was ≥500 mg l~(-1). Breaking elongation decreased with increasing GA concentration.
机译：根据干湿纺丝技术成功制备了壳聚糖（CS）中空纤维（HF）膜。用戊二醛（GA）水溶液进行后处理以进行交联反应。研究了GA浓度在50-1000 mg l〜（-1）范围内对溶胀，力学和吸附性能的影响。通过SEM和FTIR检查了纤维的形态和化学结构。随着GA浓度的增加，溶胀度和吸附能力降低。与蒸馏水和盐溶液相比，CS中空纤维在酸性溶液中溶胀最大。 CS HFs的吸附容量增加，而初始pH从7.5降低到3.5。解吸实验表明，CS HFs可重复用作吸附剂。机械性能受到GA后处理的强烈影响：在低GA浓度（50 mg l〜（-1））下，拉伸强度和弹性模量增加，而当浓度≥500mg l〜（-1）时，拉伸强度和弹性模量急剧下降。断裂伸长率随GA浓度的增加而降低。

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  • 来源
    《Reactive & Functional Polymers》 |2013年第1期|218-223|共6页
  • 作者

    F. Tasselli; A. Mirmohseni; M.S. Seyed Dorraji; A. Figoli;

  • 作者单位

    Institute on Membrane Technology, ITM-CNR, Rende, CS 87030, Italy;

    Polymer Research Technology Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran;

    Polymer Research Technology Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran;

    Institute on Membrane Technology, ITM-CNR, Rende, CS 87030, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    chitosan; hollow fiber; crosslinking; mechanical and adsorption properties; swelling;

    机译：壳聚糖中空纤维交联机械和吸附性能;肿胀;

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