Asymmetric swelling and self-assembly of poly(N-isopropyl-acrylamide)-block-poly(ethylene glycol) in water

R. Motokawa, K. Morishita, S. Koizumi, E. Yoshimoto, M. Annaka

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

This investigation focused on the self-assembly of poly(N-isopropylacrylamide)-block-poly(ethylene glycol) (PNIPA-b-PEG) in water. We distinguish four regions in the phase diagram: a transparent sol, opaque sol, opaque gel, and syneresis. Small-angle neutron scattering measurements revealed that microphase separation occurs above 17 {ring operator} C to form disordered micelles, which includes a range of states from (i) asymmetric swelling to (ii) micelle formation with only short-range liquid-like order. This result may be attributed to the action of water, which starts to behave as a selective solvent for PEG blocks; the PEG chains are more swollen with water than are the PNIPA chains.

元の言語英語
ページ(範囲)745-748
ページ数4
ジャーナルPhysica B: Condensed Matter
385-386 I
DOI
出版物ステータス出版済み - 11 27 2006

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swelling
Self assembly
Polyethylene glycols
Swelling
self assembly
glycols
ethylene
Micelles
Water
micelles
water
Microphase separation
Polymethyl Methacrylate
Sols
Neutron scattering
Phase diagrams
Sol-gels
neutron scattering
phase diagrams
gels

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

これを引用

Asymmetric swelling and self-assembly of poly(N-isopropyl-acrylamide)-block-poly(ethylene glycol) in water. / Motokawa, R.; Morishita, K.; Koizumi, S.; Yoshimoto, E.; Annaka, M.

:: Physica B: Condensed Matter, 巻 385-386 I, 27.11.2006, p. 745-748.

研究成果: ジャーナルへの寄稿記事

Motokawa, R. ; Morishita, K. ; Koizumi, S. ; Yoshimoto, E. ; Annaka, M. / Asymmetric swelling and self-assembly of poly(N-isopropyl-acrylamide)-block-poly(ethylene glycol) in water. :: Physica B: Condensed Matter. 2006 ; 巻 385-386 I. pp. 745-748.
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