Living anionic surface-initiated polymerization (LASIP) of styrene from clay nanoparticles using surface bound 1,1-diphenylethylene (DPE) initiators

Xiaowu Fan, Qingye Zhou, Chuanjun Xia, Walter Cristofoli, Jimmy Mays*, Rigoberto Advincula

*この研究の対応する著者

研究成果: Article査読

93 被引用数 (Scopus)

抄録

Nanocomposite materials of clay nanoparticles and polystyrene were prepared using living anionic surface-initiated polymerization (LASIP). The montmorillonite clay surface and intergallery interfaces were intercalated with 1,1-diphenylethylene (DPE), an organic cation and initiator derivative for anionic polymerization. Its intercalation was confirmed by a series of characterization methods including X-ray diffraction (XRD), FT-IR spectroscopy, thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). The results showed a complete replacement of the Na counterions by the charged initiators. LASIP was performed in a high-vacuum reaction setup for anionic polymerization using different styrene monomer/initiator ratios. A living anionic polymerization mechanism was determined from molecular weight (MW) data and the molecular weight distribution. A comparison of FT-IR, TGA, XPS, XRD, and atomic force microscopy (AFM) data confirmed that polystyrene was indeed "grafted from" clay surfaces for these composite materials. The initiation efficiency was distinguished between surface-and intergallery interface-bound initiators.

本文言語English
ページ(範囲)4511-4518
ページ数8
ジャーナルLangmuir
18
11
DOI
出版ステータスPublished - 2002 5 28
外部発表はい

ASJC Scopus subject areas

  • コロイド化学および表面化学
  • 物理化学および理論化学

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