Microphase Separation in Dehydrated N-isopropylacrylamide/sodium Acrylate Gel
Microphase Separation in Dehydrated N-isopropylacrylamide/sodium Acrylate Gel
复制标题
脱水 N-异丙基丙烯酰胺/丙烯酸钠凝胶中的微相分离
DOI：
10.1143/jjap.38.l1360
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发表时间：
1999
影响因子：
1.5
通讯作者：
K. Hara
中科院分区：
文献类型：
--
作者：
M. Sugiyama;S. Kuwajima;Y. Soejima;A. Nakamura;N. Hiramatsu;T. Kikukawa;Atsushi Suzuki;K. Hara
第一小角X射线散射（SAXS）测量进行，以检查在N-异丙基丙烯酰胺/丙烯酸钠（NIPA/SA）凝胶的介观结构。通过SAXS测量，在脱水凝胶中发现在0.026 A-1附近的显著峰。考虑到对X射线的横截面大小，Na+离子的浓度波动是一个可能的候选人，使SAXS轮廓的对比度，这取决于亲水基团的分布。因此，可以得出结论，在本研究中发现的介观结构是由于在脱水凝胶中的亲水域捕获的Na+离子和凝胶内的残余水。
The first small-angle X-ray scattering (SAXS) measurements were carried out in order to examine the mesoscopic structure in the N-isopropylacrylamide/sodium acrylate (NIPA/SA) gel. By the SAXS measurements, a prominent peak was found in the dehydrated gel around 0.026 A-1. Taking into account of the cross section magnitude against X-ray, the concentration fluctuation of Na+ ions was a probable candidate for making contrast for the SAXS profile, which depends on the distribution of the hydrophilic group. Therefore, it was concluded that the mesoscopic structure found in the present study is due to the hydrophilic domains in the dehydrated gel which capture the Na+ ions and the remnant water inside the gel.