STUDY ON THE MECHANISM OF CONSISTENSY CHARACTERISTICS OF NA–MONTOMORILLONITE USING SMALL-ANGLE X-RAY SCATTERING METHOD
STUDY ON THE MECHANISM OF CONSISTENSY CHARACTERISTICS OF NA–MONTOMORILLONITE USING SMALL-ANGLE X-RAY SCATTERING METHOD
复制标题
小角X射线散射法研究NA-蒙脱土稠度特性机理
DOI：
10.11362/jcssjclayscience.23.2_19
复制
发表时间：
2019
期刊：
影响因子：
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通讯作者：
K. Soga
中科院分区：
文献类型：
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作者：
M. Okawara;Y. Saito;K. Soga
采用小角X射线散射法进行类型试验，以阐明钠基蒙脱石的稠度机理。可以使用小角X射线散射法分析纳米级的颗粒结构，这使得能够测量超过10 nm的基底间距，这在XRD中是不可能的。根据试验结果，在固态至半固态中，存在结晶溶胀，其中分子水层厚度逐步增加，而在塑性状态至液态中，存在渗透溶胀，其中颗粒之间的距离不断增加。此外，在塑性极限附近，基底间距迅速增加，从3摩尔厚的水层到12摩尔厚的水层;此外，随着液限的接近，基底间距增加到50摩尔厚的水层的顺序。从X射线散射图像的粘土颗粒的取向的评价显示，虽然颗粒在固态至半固态中随机取向，但它们在塑性状态中变得取向有序。此外，在液态下，观察到颗粒取向再次变得随机。
Type Tests using small-angle X-ray scattering method were conducted to elucidate the mechanism of consistency in Na–montmorillonite. It is possible to analyze the particle structure at the nanometer level using the small-angle X-ray scattering method, which enables measurement exceeding basal spacing of 10 nm, which is not possible in XRD. Based on the test results, in the solid state to semi-solid state, there was crystalline swelling in which the molecular water layer thickness increased stepwise, whereas in the plastic state to liquid state, there was osmotic swelling in which the distance between particles continually increased. Moreover, near the plastic limit, the basal spacing increased rapidly from a 3-mol-thick water layer to a 12-mol-thick water layer; furthermore, as the liquid limit approached, the basal spacing increased up to the order of 50-mol-thick water layer. An evaluation of the orientation of the clay particles from the X-ray scattering images revealed that, while the particles were randomly oriented in the solid state to semi-solid state, they became oriented ordered in the plastic state. Furthermore, in the liquid state, it was observed that the particle orientation became random again.
DOI：
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发表时间：
2007
期刊：
clay science vol. 46
影响因子：
--
作者：
Suzuki;K.;Sato;T.;Yoneda;T.
通讯作者：
T.