TY - JOUR
T1 - Comparative SANS and SAXS studies on a mesoscopically heterogeneous structure in the dehydrated NIPA/SA gel
AU - Sugiyama, Masaaki
AU - Masahiko, Annaka
AU - Motokawa, Ryuhei
AU - Kuwajima, Shuichiro
AU - Hara, Kazuhiro
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Mesoscopic structures of a dehydrated N-isopropylacrylamide/sodium acrylate (NIPA/SA) gel and the re-moistened one are investigated with complementary use of the small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) methods. The SAXS profile of the dehydrated NIPA/SA gel shows a clear peak at q = 0.026 Å-1 but that of the re-moistened one does not. On the other hand, only the SANS profile of the re-moistened NIPA/SA gel shows a peak at q = 0.022 Å-1. Taking into account that SAXS is sensitive to the fluctuation of the distribution of the SA bases and SANS is sensitive to that of the water in the NIPA/SA gel, these results indicate that inhomogeneous evaporation of water in the NIPA/SA gel occurs on the dehydration and that the SA clusters are finally generated.
AB - Mesoscopic structures of a dehydrated N-isopropylacrylamide/sodium acrylate (NIPA/SA) gel and the re-moistened one are investigated with complementary use of the small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) methods. The SAXS profile of the dehydrated NIPA/SA gel shows a clear peak at q = 0.026 Å-1 but that of the re-moistened one does not. On the other hand, only the SANS profile of the re-moistened NIPA/SA gel shows a peak at q = 0.022 Å-1. Taking into account that SAXS is sensitive to the fluctuation of the distribution of the SA bases and SANS is sensitive to that of the water in the NIPA/SA gel, these results indicate that inhomogeneous evaporation of water in the NIPA/SA gel occurs on the dehydration and that the SA clusters are finally generated.
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U2 - 10.1016/S0921-4526(01)01061-4
DO - 10.1016/S0921-4526(01)01061-4
M3 - Article
AN - SCOPUS:0036123701
VL - 311
SP - 90
EP - 94
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1-2
ER -