Chain stiffness and chain conformation of poly(α-methylene-γ-butyrolactone) in dilute solutions

Yuji Higaki, Ryosuke Okazaki, Tatsuya Ishikawa, Moriya Kikuchi, Noboru Ohta, Atsushi Takahara

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

The chain stiffness and local chain conformation of atactic poly(α-methylene-γ-butyrolactone) (PMBL), which is a side chain cyclic structural analog of poly(methyl methacrylate) (PMMA), with a weight-average molecular weight (Mw) ranging from 2.8 × 103 to 2.6 × 106 in N,N-dimethylformamide (DMF) and γ-butyrolactone (GBL) were characterized by size exclusion chromatography with a multi-angle light-scattering detector (SEC-MALS) and synchrotron radiation small-angle X-ray scattering (SAXS). Based on the Kratky-Porod worm-like chain model, the scattering functions and the Mw dependence of z-average root-mean-square radius of gyration <S2>z 1/2 yielded the Kuhn segment lengths λ-1, the diameter of the PMBL chains d, and the excluded-volume strengths in DMF and GBL. The local conformation of atactic PMBL in DMF and GBL were slightly larger than those of atactic PMMA, due to the presence of the conformationally rigid lactone ring structure.

本文言語英語
ページ(範囲)6539-6545
ページ数7
ジャーナルpolymer
55
25
DOI
出版ステータス出版済み - 12 1 2014

All Science Journal Classification (ASJC) codes

  • 有機化学
  • ポリマーおよびプラスチック
  • 材料化学

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