HPLC analysis of cyclic polystyrenes

Donghyun Cho, Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 引用 (Scopus)

抜粋

Cyclic polystyrenes with various molecular weight were prepared by the reaction of linear polystyrene having two end vinyl groups and potassium naphthalenide as a coupling agent Intermolecular side reactions produced higher molecular weight polycondensates and undesirable chain termination reactions also produced linear precursors in addition to the designed molecules. In order to isolate cyclic polymers from the ring closure reaction mixtures, preparative size exclusion chromatography (SEC) method was employed. The purity of SEC-fractionated cyclic polystyrenes was rigorously examined by liquid chromatography at the critical condition (LCCC). After SEC-fractionation, we obtained large amount of highly pure cyclic polymers, though high molecular weight cyclic polymers contain very small amount of linear precursor (< 5%).

元の言語英語
ホスト出版物のタイトル54th SPSJ Symposium on Macromolecules - Polymer Preprints, Japan
ページ3553
ページ数1
54
エディション2
出版物ステータス出版済み - 2005
外部発表Yes
イベント54th SPSJ Symposium on Macromolecules - Yamagata, 日本
継続期間: 9 20 20059 22 2005

その他

その他54th SPSJ Symposium on Macromolecules
日本
Yamagata
期間9/20/059/22/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

フィンガープリント HPLC analysis of cyclic polystyrenes' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Cho, D., Kawaguchi, D., Takano, A., & Matsushita, Y. (2005). HPLC analysis of cyclic polystyrenes. : 54th SPSJ Symposium on Macromolecules - Polymer Preprints, Japan (2 版, 巻 54, pp. 3553)