Structural transition of non-ionic poly(acrylamide) gel

Sada atsu Mukai, Hirohisa Miki, Vasyl Garamus, Regine Willmeit, Masayuki Tokita

研究成果: 書籍/レポート タイプへの寄稿

3 被引用数 (Scopus)

抄録

We discuss the structure of the opaque poly(acrylamide) gel that is synthesized at higher mole fractions of the cross-linking agent above 0.2. The structure of the opaque gel is analyzed by the small angle neutron scattering technique. The fractal analysis of the scattering function yields that the polymer network of the opaque poly(acrylamide) gel can be seen as a mass fractal of the fractal dimension of about DM ~ 2.7 when the mole fraction of the cross-linker is higher than 0.3. On the other hand, much larger exponents are obtained in the lower concentration region of the cross-linker less than 0.3. It suggests that the polymer network of the gel behaves as a surface fractal of the fractal dimension of DS ~ 2.5. The structure of the polymer network changes from the surface fractal to the mass fractal at the mole fraction of the cross-linker is 0.3 when the mole fraction of the cross-linker is increased from 0.2 to 0.5. The structure of the gel is also observed by using the confocal laser scanning microscope. The fractal analysis of the confocal images indicate that the fractal dimension of the two dimensional distribution of the colloidal particles in the cross section of the colloidal aggregate is found to be about 1.7.

本文言語英語
ホスト出版物のタイトルGels
ホスト出版物のサブタイトルStructures, Properties, and Functions
編集者Masayuki Tokita, Katsuyoshi
ページ95-100
ページ数6
DOI
出版ステータス出版済み - 12月 1 2009

出版物シリーズ

名前Progress in Colloid and Polymer Science
136
ISSN(印刷版)0340-255X

!!!All Science Journal Classification (ASJC) codes

  • 物理化学および理論化学
  • 有機化学
  • ポリマーおよびプラスチック
  • コロイド化学および表面化学
  • 材料化学

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