Authors: Tsuneo Okubo Hiromi Kitano Masanobu Murou Kohji Yoshinaga Masaaki Nakamuro Akira Tsuchida
Publish Date: 2015/08/27
Volume: 293, Issue: 12, Pages: 3393-3401
Abstract
Drying dissipative patterns during drying of marine colloidal MC clays were observed in the deionized aqueous suspension on a cover glass a watch glass and a Petri glass dish Two kinds of broad rings BR ie BR of small particles at the outside edge and BR of large particles at the inner area from the edge were observed The size of the outside BR was the same as that of the initial suspension irrespective of colloidal concentration whereas the size of the inner BR increased as colloidal concentration increased Highly distorted multirings ie branchlike or netlike patterns appeared Furthermore no spoke lines formed except the areas at the outside edge of the dried film These observations support the circular stacking of the anisotropicshaped MC particles during the convectional flow process The B type of solutes was deduced for MC from the drying patterns where strong solutesubstrate affinity especially for the small particles and weak intersolute affinity coexist
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