Fluorescent Sodium Alginate Applied to Papermaking Furnish with Polyamideamine Epichlorohydrin

Xiao Ning, Chunli Yao, Lina Guan, Yuanyuan Bai

Abstract


To explore the distribution of paper strengthening agent polyamideamine epichlorohydrin (PAE)/sodium alginate (SA) binary system in handsheets, SA was labeled by fluorescein isothiocyanate (FITC) to trace the system in paper. 1,6-diaminohexane was used to link SA and FITC to prepare fluorescein isothiocyanate sodium alginate (F-SA), and the optimal synthesis conditions of SA and 1,6-diaminohexane were evaluated. F-SA was identified by ultraviolet (UV) spectral scanning, Fourier transform infrared spectroscopy (FTIR), and fluorescence microscope. The PAE/F-SA binary system in the paper sheet was detected with a fluorescence microscope. The results indicated that FITC could successfully label SA marked as F-SA. The fluorescence substitution degree was 0.89%. Compared with the PAE/SA binary system, the PAE/F-SA binary system produced significant fluorescence in the paper, which indicated that the PAE/SA binary system was evenly distributed and formed a network structure in the handsheets. Furthermore, this method of fluorescence labeling could be employed in papermaking.

Keywords


Sodium alginate; Fluorescent labeling; Fluorescein isothiocyanate; Polyamideamine epichlorohydrin; Paper strengthening agent

Full Text: PDF

Welcome to BioResources! This online, peer-reviewed journal is devoted to the science and engineering of biomaterials and chemicals from lignocellulosic sources for new end uses and new capabilities. The editors of BioResources would be very happy to assist you during the process of submitting or reviewing articles. Please note that logging in is required in order to submit or review articles. Martin A. Hubbe, (919) 513-3022, hubbe@ncsu.edu; Lucian A. Lucia, (919) 515-7707, lucian.lucia@gmail.com URLs: bioresourcesjournal.com; http://ncsu.edu/bioresources ISSN: 1930-2126