Abstract
A simple analytical method was developed for determination of chloride content in polymeric materials. The procedure comprises of two steps, the dissolution of the polymer by alkaline fusion followed by indirect spectrophotometric analysis of the chloride based on the absorption at 460 nm of Fe(SCN)2+, a product of the reaction between chloride ion and a mixture of mercury (II) thiocyante and ferric ion. A non-linear calibration curve was constructed from 0.5 to 20 ppm with R2 = 0.9991; the limit of detection and quantitation were of 0.325 and 1.083 ppm, respectively. The recovery of the whole procedure was higher than 92.9 % with a RSD ~ 2.4 %. The developed procedure was applied to animated poly(divinylbenzene-co-vinyl benzyl chloride) in order to investigate the extent of amination of the base material.
Highlights
Many polymeric materials containing active chloride have been used as intermediate products for introducing a number of functional groups for various applications [1, 2]
To evaluate the method accuracy which comprises precision and trueness, the chloride standards with various levels were added to the blank polymer before sample preparation step; they were processed and analyzed in the same procedure [6]
Investigation of fusion conditions Alkaline fusion is one of the most popular methods using for dissolution solid polymeric materials in polymer additive analysis [7]
Summary
Many polymeric materials containing active chloride have been used as intermediate products for introducing a number of functional groups for various applications [1, 2]. Methods have been developed to analyze chloride e.g. XPS [3], combustion and colorimetric method [4]. They cannot accurately determine the chloride content in a wide concentration range, especially at low levels of chloride. The chloride determination method was developed including two steps, (1) the dissolution of the. Cross-linked polystyrene materials which contain various levels of chloride were synthesized based on the procedure of our previous work [5]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
