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1. (WO2018142034) METHOD FOR DETERMINING THE ANIONIC CHARGE DENSITY OF A POLYMER

Pub. No.:    WO/2018/142034    International Application No.:    PCT/FR2017/053624
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Sat Dec 16 00:59:59 CET 2017
IPC: C09K 8/528
G01N 21/64
Applicants: S.P.C.M. SA
Inventors: FAVERO, Cédrick
BRAUN, Olivier
SOUZY, Renaud
MARAIS, Arthur
BRICHART, Thomas
Title: METHOD FOR DETERMINING THE ANIONIC CHARGE DENSITY OF A POLYMER
Abstract:
The present invention relates to a method for determining the anionic charge density of at least one polymer present in a sample, according to the following steps: - bringing at least one polymer present in the sample into contact with, and enabling the interaction thereof with, a developer solution comprising lanthanide (III) ions, - exciting the sample at an excitation wavelength λexc and detecting, by time-resolved photoluminescence, a signal originating from the lanthanide (III) ions that have interacted with the at least one polymer at an emission wavelength λem, and - determining the anionic charge density of the at least one polymer of the sample using the signal detected at the emission wavelength λem.