Electrospun nanofibrous chitosan membranes modified with polyethyleneimine for formaldehyde detection

Na Wang; Xianfeng Wang; Yongtang Jia; Xiaoqi Li; Jianyong Yu; Bin Ding

doi:10.1016/j.carbpol.2014.02.088

Electrospun nanofibrous chitosan membranes modified with polyethyleneimine for formaldehyde detection

Carbohydr Polym. 2014 Aug 8:108:192-9. doi: 10.1016/j.carbpol.2014.02.088. Epub 2014 Mar 12.

Authors

Na Wang¹, Xianfeng Wang¹, Yongtang Jia², Xiaoqi Li³, Jianyong Yu⁴, Bin Ding⁵

Affiliations

¹ State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
² College of Textiles and Clothing, Wuyi University, Jiangmen 529020, Guangdong, China.
³ College of Textiles, Donghua University, Shanghai 201620, China.
⁴ Nanomaterials Research Center, Modern Textile Institute, Donghua University, Shanghai 200051, China.
⁵ State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China; Nanomaterials Research Center, Modern Textile Institute, Donghua University, Shanghai 200051, China. Electronic address: binding75@yahoo.com.

PMID: 24751264
DOI: 10.1016/j.carbpol.2014.02.088

Abstract

Here we describe a formaldehyde sensor fabricated by coating polyethyleneimine (PEI) functionalized chitosan nanofiber-net-binary structured layer on quartz crystal microbalance (QCM). The chitosan fibrous substrate comprising nanofibers and spider-web-like nano-nets constructed by a facile electro-spinning/netting process provided an ideal structure for the uniform PEI modification and sensing performance enhancement. Benefiting from the fascinating nanostructure, abundant primary amine groups of PEI, and strong adhesive force to the QCM electrode of PEI-chitosan membranes, the developed formaldehyde sensor presented rapid response and low detection limit (5 ppm) at room temperature. These findings have important implications in fabricating multi-dimensional nanostructures on QCM for gas sensing and chemical analysis.

Keywords: Chitosan; Formaldehyde detection; Nanofiber-net-binary structure; Polyethyleneimine.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Chitosan / chemistry*
Formaldehyde / chemistry*
Membranes, Artificial
Nanostructures / chemistry*
Polyethyleneimine / chemistry*

Substances

Membranes, Artificial
Formaldehyde
Polyethyleneimine
Chitosan