Fabrication and characterization of 1 D Fe3 O4/P(NIPAM–MAA– MBA) nanochains with thermo-and pH-responsive shell for controlled release for phenolphthalein

Mingliang Ma, Yong Ma, Baoliang Zhang, Hepeng Zhang, Wangchang Geng, Qiuyu Zhang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

One-dimensional (1D) Fe3O4/poly(N-iso-propylacrylamide-methacrylic acid-N,N0 -methylenebis-acrylamide)(Fe3O4/P(NIPAM–MAA–MBA)) peapod-like nanochains have been successfully synthesized by magnetic field-induced precipitation polymerization. Fe3O4 microspheres modified with vinyl groups can be arranged with the direction of the external magnetic field in a line and linked permanently via P(NIPAM–MAA–MBA) coating during precipitation polymerization. The properties of 1D Fe3O4/ P(NIPAM–MAA–MBA) were characterized by transmission electron microscopy, X-ray diffraction, thermogravimetric analysis (TGA), vibrating sample magnetometry, X-ray photoelectron spectroscopy, and UV–Vis spectrophotometer. Magnetic measurement revealed that these 1D peapod-like nanochains showed highly magnetic sensitivity. The thermal-and pH- response of 1D magnetic Fe3O4/P(NIPAM–MAA– MBA) nanochains was investigated by the temperature/pH dependence of hydrodynamic radius of Fe3O4/P(NIPAM– MAA–MBA) microspheres. The release behavior of phenolphthalein from 1D magnetic Fe3O4/P(NIPAM–MAA–MBA) nanochains could be effectively controlled by changing the temperature/pH values.

Original languageEnglish
Pages (from-to)3083-3090
Number of pages8
JournalJournal of Materials Science
Volume50
Issue number8
DOIs
StatePublished - 1 Apr 2015

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