Synthesis and characterization of poly(hydroxamic acid) chelating resin from poly(methylacrylate) grafted sago starch

Lai, Wei Xiong (2010) Synthesis and characterization of poly(hydroxamic acid) chelating resin from poly(methylacrylate) grafted sago starch. Universiti Malaysia Sabah. (Unpublished)

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Abstract

The preparation of a chelating resin containing hydroxamic acid functional group was carried out by using polymethyl acrylate (PMA) grafted sago starch which was initiated by ceric ammonium nitrate (CAN). In this study, the conversion of the ester group to hydroxamic acid was carried out by the treatment of hydroxylamine in an alkaline medium. The characterization of the poly(hydroxamic acid) chelating resin was performed by FT-IR spectroscopy. The purple colour of the resin bead was observed when the poly(hydroxamic acid) resin was shaken with vanadium ion in diluted hydrochloric acid and the functional group was confirmed using FT-IR. The maximum swelling for poly(hydroxamic acid) resin which was soaked in distilled water overnight was 6.987 g water g�¹. The maximum capacity for copper was 2.287 mmol/g, the maximum capacity of Iron was 5.366 mmol/g at pH 6, and the maximum capacity for chromium was 4.053 mmol/g at pH 5. The copper, iron, chromium sorption capacities were determined using AAS, the trends of sorption capacity of each metal ions versus pH were presented in a graph. The adsorption kinetics of the copper ion in pH 4 acetate buffer were relatively fast where the time for 50% exchange was about 13 minutes, and the sorption capacity of copper was 2.1429 mmol/g at 60 minutes.

Item Type: Academic Exercise
Uncontrolled Keywords: chelating resin, hydroxamic acid, polymethyl acrylate (PMA), sago starch, ceric ammonium nitrate
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 15 Jul 2016 08:27
Last Modified: 20 Nov 2017 03:36
URI: http://eprints.ums.edu.my/id/eprint/13605

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