Shinohara Yuya, Yamamoto Naoko, Kishimoto Hiroyuki, Amemiya Yoshiyuki
Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
Sumitomo Rubber Industries Ltd, 3-6-9 Wakinohamacho, Chuo, Kobe, Hyogo 651-0072, Japan.
J Synchrotron Radiat. 2015 Jan;22(1):119-23. doi: 10.1107/S1600577514022954. Epub 2015 Jan 1.
X-ray photon correlation spectroscopy (XPCS) of swollen rubber containing spherical silica nanoparticles is reported. It is shown that irradiation by intense X-rays leads to the breakdown of cross-links, thereby inducing the local rearrangement of silica nanoparticles. This rearrangement process depends on the cross-link density and is characterized by a compressed exponential relaxation with aging behaviour, which resembles a common feature of complex fluids observed with XPCS.
报道了含球形二氧化硅纳米粒子的溶胀橡胶的X射线光子相关光谱(XPCS)。结果表明，强X射线辐照会导致交联键断裂，从而引起二氧化硅纳米粒子的局部重排。这种重排过程取决于交联密度，其特征是具有老化行为的压缩指数弛豫，这类似于用XPCS观察到的复杂流体的一个共同特征。
