Interaction of polymethacrylate-g-PEO comb copolymers with natural bentonite in aqueous systems

Author

Weishan Wang ; Baicun Zheng ; Weiguang Gong ; Lefeng Fu ; Zhongjun Feng

Author_Institution

R&D Center for Sports Mater., East China Univ. of Sci. & Technol., Shanghai, China

Volume

7

Issue

7

fYear

2012

fDate

7/1/2012 12:00:00 AM

Firstpage

671

Lastpage

675

Abstract

Natural bentonite was successfully modified using polymethacrylate-g-polyethylene oxide (PEO) comb copolymer. Changes in the surfaces and microstructure of the resultant organo-bentonite were characterised by Fourier transform infrared (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), scanning electron microscopy and high-resolution transmission electron microscopy, respectively. FTIR results indicated the presence of the copolymer on the surface of organo-bentonite. XRD measurements showed that the copolymer molecules were intercalated into the bentonite layers. TG analysis and electron microscopy micrographs demonstrated the interlayers of bentonite were intercalated by the copolymers with surface adsorption to a certain extent.

Keywords

Fourier transform spectra; X-ray diffraction; adsorption; clay; crystal microstructure; filled polymers; infrared spectra; intercalation compounds; polymer blends; scanning electron microscopy; solid-state phase transformations; transmission electron microscopy; FTIR spectrscopy; Fourier transform infrared spectroscopy; SiO₂-Al₂O₃-MgO-CaO-Fe₂O₃; X-ray diffraction; XRD; aqueous system; high-resolution transmission electron microscopy; intercalation; interlayers; microstructure; natural bentonite; polymethacrylate-g-polyethylene oxide comb copolymers; scanning electron microscopy; structural phase transformations; surface adsorption; thermogravimetric analysis;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2012.0251

Filename

6250105