氯离子响应性纳米纤维素荧光水凝胶的构筑

doi:10.13475/j.fzxb.20211101309

纺织学报 ›› 2022, Vol. 43 ›› Issue (02): 44-52.doi: 10.13475/j.fzxb.20211101309

氯离子响应性纳米纤维素荧光水凝胶的构筑

吴嘉茵¹^,², 王汉琛¹^,², 黄彪¹, 卢麒麟¹^,²()

1.闽江学院福建省新型功能性纺织纤维及材料重点实验室, 福建福州 350108
2.福建农林大学材料工程学院, 福建福州 350002

收稿日期:2021-11-02 修回日期:2021-12-08 出版日期:2022-02-15 发布日期:2022-03-15
通讯作者: 卢麒麟
作者简介:吴嘉茵(1997—),女,硕士生。主要研究方向为生物质纤维纳米材料。
基金资助:
福建省科技创新重点项目(2021G02011);福建省自然科学基金面上项目(2021J011034);福州市科技计划项目(2021-S-089);闽江学院引进人才项目(MJY18010)

Fabrication of fluorescent cellulose nanocrystals hydrogels for chloride ion response

WU Jiayin¹^,², WANG Hanchen¹^,², HUANG Biao¹, LU Qilin¹^,²()

1. Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou, Fujian 350108, China
2. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China

Received:2021-11-02 Revised:2021-12-08 Published:2022-02-15 Online:2022-03-15
Contact: LU Qilin

摘要/Abstract

摘要：

为解决传统PVA复合水凝胶制备过程中使用有毒试剂或需要反复多次冻融能耗高、过程繁琐的问题,以植酸(PA)作为交联剂将荧光纳米纤维素(F-CNCs)与聚乙烯醇(PVA)有机结合,基于多重氢键作用,构建了力学性能好、Cl^-响应灵敏的PVA/F-CNCs/PA纳米纤维素荧光水凝胶。基于F-CNCs优异的力学性能、荧光性能、良好的生物相容性及纳米效应,分析了PVA水凝胶良好的荧光性能及Cl^-响应性。结果表明:当F-CNCs的含量为0.6 g 时,PVA/F-CNCs/PA复合水凝胶的压缩强度提高了150%,且结晶度以及热稳定性均有所提高。PVA/F-CNCs/PA复合水凝胶在低的pH值下对Cl^-敏感,荧光淬灭效率在Cl^-浓度为0~0.2 mol/L范围内呈线性响应,表明制备得到的纳米纤维素荧光水凝胶在Cl^-浓度分析检测、疾病诊断、生物和化学传感器等方面具有潜在应用价值。

关键词: 氯离子响应, 荧光纳米纤维素, 植酸, 多重氢键, 荧光水凝胶

Abstract:

In order to avoid the usage of toxic reagents and reduce the high energy consumption and complicated multiple freeze-thaw cycles in the traditional preparation process of PVA composite hydrogels, PVA/F-CNCs/PA fluorescent cellulose nanocrystals hydrogels with good mechanical properties and high sensibility to Cl^- were prepared by combining fluorescent cellulose nanocrystals (F-CNCs) and poly(vinyl alcohol) (PVA) through multiple hydrogen bonding under the cross-linking of phytic acid (PA). The fluorescent performance and Cl^- sensibility of PVA hydrogel were improved significantly due to the excellent mechanical properties, high fluorescent performance, good biocompatibility and nanometer effect of F-CNCs. When the content of F-CNCs was 0.6 g, the compressive strength of PVA/F-CNCs/PA composite hydrogels was increased by 150%, and the crystallinity and thermal stability were also improved. The composite hydrogels were sensitive to Cl^- at low pH, and the fluorescence quenching efficiency showed a linear response in the Cl^- concentration range of 0-0.2 mol/L. The results indicated that the prepared fluorescent hydrogels had potential application in the field of Cl^- concentration analysis and detection, biological and chemical sensors and disease diagnosis.

Key words: chloride ion response, fluorescent cellulose nanocrystal, phytic acid, multiple hydrogen bond, fluorescent hydrogel

中图分类号:

TQ352

吴嘉茵, 王汉琛, 黄彪, 卢麒麟. 氯离子响应性纳米纤维素荧光水凝胶的构筑[J]. 纺织学报, 2022, 43(02): 44-52.

WU Jiayin, WANG Hanchen, HUANG Biao, LU Qilin. Fabrication of fluorescent cellulose nanocrystals hydrogels for chloride ion response[J]. Journal of Textile Research, 2022, 43(02): 44-52.

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氯离子响应性纳米纤维素荧光水凝胶的构筑

Fabrication of fluorescent cellulose nanocrystals hydrogels for chloride ion response

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