Synthesis of Thermosensitive Microgel Particles by Using Polymerizable Surfactant

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  • Kanazawa Ryoichi
    Department of Chemical Engineering, Hiroshima University
  • Sakohara Shuji
    Department of Chemical Engineering, Hiroshima University
  • Ito Shoji
    National Institute of Advanced Industrial Science and Technology (AIST)

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  • 反応性界面活性剤を利用した感温性ゲル微粒子の合成
  • 材料工学,デバイス 反応性界面活性剤を利用した感温性ゲル微粒子の合成
  • ザイリョウ コウガク デバイス ハンノウセイ カイメン カッセイザイ オ リヨウ シタ カンオンセイ ゲル ビリュウシ ノ ゴウセイ

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Abstract

Thermosensitive microgel particles were prepared by emulsion polymerization using a polymerizable anionic surfactant, SE-10 N. N-isopropylacrylamide and N,N'-methylenebisacrylamide were used as primary monomer and cross-linker, respectively. The gel particles reversibly swelled and shrank in response to temperature change. The effects of synthesis conditions on the particle diameter and the swelling degree were examined. Polymerizable surfactant did not affect the diameter of gel particles, if it was present at above a certain concentration. The gel diameter was dependent on the concentrations of the initiator and accelerator. The swelling degree of gel particles was strongly affected by the concentration of the cross-linker. From these results, the mechanism of particle formation was discussed.

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