Influence of Amount of Thermosensitive Polymer on Anion-Exchange Properties of Thermosensitive Polymer/Mesoporous Silica Composite

DOI Web Site Web Site 40 References
  • Murakami Kenji
    Department of Engineering in Applied Chemistry, Faculty of Engineering and Resource Science, Akita University
  • Kato Takahiro
    Department of Engineering in Applied Chemistry, Faculty of Engineering and Resource Science, Akita University
  • Sugawara Katsuyasu
    Department of Engineering in Applied Chemistry, Faculty of Engineering and Resource Science, Akita University

Bibliographic Information

Other Title
  • 感温性高分子／メソポーラスシリカ複合体の陰イオン交換特性におよぼす感温性高分子被覆量の影響
  • カンオンセイ コウブンシ/メソポーラスシリカ フクゴウタイ ノ インイオン コウカン トクセイ ニ オヨボス カンオンセイ コウブンシ ヒフクリョウ ノ エイキョウ

Search this article

Abstract

The influence of the amount of thermosensitive polymer, poly(N-isopropylacrylamide) (PNIPAM), on the anion-exchange properties of PNIPAM/mesoporous silica composite was examined. The structure of synthesized composite was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), elemental analysis, and nitrogen adsorption measurement. The amount of PNIPAM immobilized on the mesoporous silica, which was calculated from the weight loss measured by thermogravimetry, ranged from 1.0 to 51.2 wt% depending on the amount of NIPAM monomer and crosslinking agent. The adsorption–desorption behavior of methyl orange (MO) ions was affected by the temperature of aqueous solution: the MO ions were adsorbed and desorbed reversibly and repeatedly depending on the pH of the solution at 25°C, while the amount of adsorbed MO ions remained nearly constant at 0.03–0.04 mmol/g regardless of the pH of the solution at 40°C. Also, the amount of PNIPAM immobilized on the mesoporous silica affected the adsorption rate of MO ions. The results indicated that 1 wt% of amount of immobilized PNIPAM is sufficient to produce a rapid response to the temperature change quickly and rapid adsorption of ions.

Journal

References(40)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top