Chemically modofied poly (styrene-co-divinyl benzene-co-vinylbenzyl chloride) by click reaction and its magnetic nano-composites = preparation, characterization, and adsorption properties

Name: Songwut Lapwanit

keyword: Click reaction

; vinylabenzyl chloride

Abstract: In this study, 2 types of copolymer beads, poly(styrene-co-divinyl benzeneco-vinylbenzyl chloride) or PVBC and magnetic poly(styrene-co-divinyl benzene-covinylbenzyl chloride) or M-PVBC, were prepared by suspension polymerization for heavy metals removal. Incorporation of Fe3O4 nanoparticles in the copolymer beads allows magnetic separation from wastewater in a convenient way without additional centrifugation or filtration. For this purpose, the Fe3O4 nanoparticles were prepared by a co-precipitation method and dispersed into the mixture of monomers before polymerization. The copolymer beads were chemically modified by azide substitution with sodium azide and click reaction with propargyl alcohol. The copolymers were characterized by sieve analysis, swelling ratio, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). The influences of adsorption time, pH, initial metal ion concentration, VBC content and Fe3O4 nanoparticles content on the adsorption capacity of the beads were investigated. The maximum adsorption capacities of M10-PVBC40-C beads were 57.18, 61.20 and 67.29 mg/g for Ni(II), Cu(II) and Zn(II) ions in 500 ppm single metal ion solution, respectively. Comparing with M10-PVBC-C, the PVBC40-C beads were less efficient. Their adsorption capacities were 43.03, 44.22 and 61.21 mg/g for Ni(II), Cu(II) and Zn(II) ions in 500 ppm single metal ion solutions, respectively. The adsorption isotherms of PVBC40-C and M10-PVBC-C were well with Langmuir model. This work revealed that the PVBC-C and M-PVBC-C beads could be effectively used for heavy metal removal from aqueous solution with repeatedly adsorption-desorption operations.

Burapha University. Library

Address: CHONBURI

Email: buulibrary@buu.ac.th

Name: Thanida Trakulsujaritchock

Role: Principal advisor

Name: Piyaporn Na Nongkhai

Role: Co-advisor

Created: 2015

Modified: 2564-11-16

Issued: 2015-10-26

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Polymer Science

Grantor: Burapha University

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