Visualization of Immobilized Microparticles in Fractured Polymer Gel Surfaces by Atomic Force Microscopy.
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Fractured surface images of polymer gels in water were obtained by atomic force microscopy. The gel is a three-dimensional network of N-isopropylacrylamide (NIPA) polymers which is immobilized by NIPA microparticles of submicrometer diameter. The fractured surface structure associated with the aggregated guest particles in the host network strongly depends on the amount of particles: in the cases of smaller and larger amounts, the surface roughness is small, in contrast to the rough surface observed for intermediate concentrations. The distribution of particles and its effect on the fractured surface structure are presented with references to the domain of the aggregated guest particles in the host homogeneous network. It is also shown, for the first time, that the guest gel particles in the fractured surface can swell and shrink in response to temperature change.
- 公益社団法人 応用物理学会の論文
公益社団法人 応用物理学会 | 論文
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