Solvent-controlled formation of star-like nanogels via dynamic covalent exchange of PSt- b -PMMA diblock copolymers with alkoxyamine units in the side Chain

Yoshifumi Amamoto, Moriya Kikuchi, Hideyuki Otsuka, Atsushi Takahara

研究成果: ジャーナルへの寄稿学術誌査読

27 被引用数 (Scopus)

抄録

Solvent-controlled formation of star-like nanogels via a dynamic covalent exchange reaction of Polystyrene-b-poly(methyl methacrylate) (PSt-b-PMMA) diblock copolymers with alkoxyamine units in the PMMA block was shown. Diblock copolymers, consisting of PSt blocks and PMMA blocks with cross-linkable alkoxyamine units, were synthesized by ATRP techniques. The results show that a dynamic covalent exchange among alkoxyamine units in the polymer side chains makes it possible to form cross-linking structures from linear polymers. The molecular weights and sizes of the star-like nanogels are found to depend on their reaction time, the mixing ratio of two types of diblock copolymers, and reaction concentrations. The results also show that the sizes of star-like nanogels are different, and the diameter and height values in decalin are more than triple than those in anisole.

本文言語英語
ページ(範囲)5470-5473
ページ数4
ジャーナルMacromolecules
43
12
DOI
出版ステータス出版済み - 6月 22 2010

!!!All Science Journal Classification (ASJC) codes

  • 有機化学
  • 材料化学
  • ポリマーおよびプラスチック
  • 無機化学

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