Synthesis of a fluorescent ethyl cellulose membrane with application in monitoring 1-naphthylacetic acid from controlled release formula

Long Pang; Zideng Gao; Haojie Feng; Shunyi Wang; Rongrong Ma; Bin Zhou; Shuwen Hu; Kemo Jin

doi:10.1016/j.carbpol.2017.07.057

Synthesis of a fluorescent ethyl cellulose membrane with application in monitoring 1-naphthylacetic acid from controlled release formula

Carbohydr Polym. 2017 Nov 15:176:160-166. doi: 10.1016/j.carbpol.2017.07.057. Epub 2017 Jul 24.

Authors

Long Pang¹, Zideng Gao¹, Haojie Feng¹, Shunyi Wang¹, Rongrong Ma¹, Bin Zhou¹, Shuwen Hu², Kemo Jin³

Affiliations

¹ Department of Environmental Sciences & Engineering, College of Resources and Environmental Sciences, China Agricultural University, Beijing, PR China.
² Department of Environmental Sciences & Engineering, College of Resources and Environmental Sciences, China Agricultural University, Beijing, PR China. Electronic address: shuwenhu@cau.edu.cn.
³ National Key Laboratory of Crop Genetic Improvement, College of Resources and Environment, Huazhong Agricultural University, Wuhan, PR China. Electronic address: kemo.jin@mail.hzau.edu.cn.

PMID: 28927594
DOI: 10.1016/j.carbpol.2017.07.057

Abstract

A triple-functional (chemical release properties, physical release properties, and monitoring 1-naphthylacetic acid (NAA) release) ethyl cellulose (EC) membrane, modified with fluorescein 1-naphthylacetic acid ester (FNE) and isophorone diisocyanate (IPDI), was prepared (designated as IECF membrane). Fourier transform infrared analysis was conducted to confirm the grafting of FNE to the EC backbone. The chemical and physical release properties of IECF membrane were investigated. The chemical release traits of NAA were related to the hydrolysis of FNE of IECF membrane which was influenced by the NAA concentration at pH 7.2. The physical release traits of NAA were determined by the permeation of NAA from IECF membrane. So IECF membrane has a considerable ability to form a controlled release formula for coating NAA. Furthermore, the hydrolysis of FNE was associated with the recovery of fluorescent intensity of IECF membrane, making the membrane have the ability to monitor low concentration of NAA.

Keywords: 1-naphthylacetic acid; Controlled release; Ethyl cellulose; Fluorescein; Isophorone diisocyanate.